Short Answer

Both the model and the market overwhelmingly agree that CPI will get Above 3.0% this year, with only minor residual uncertainty.

1. Market Behavior & Drivers

This market has traded in a sideways pattern, establishing a clear range between 81.0% and 93.0%. Starting at 89.0%, the price saw a significant drop of 12.0 percentage points on June 05, falling from a high of 93.0% to 81.0%. This sharp decline was likely a reaction to the announcement of the Philadelphia Fed’s Second Quarter 2026 Survey of Professional Forecasters, which projected headline CPI to average 3.5% for the year. The price has since partially recovered to its current level of 86.0%, following recent reports of a higher-than-expected 4.2% year-over-year headline CPI for May.
The price drop on June 05 was accompanied by a significant trading volume of 120 contracts, suggesting strong conviction among traders reacting to the professional forecast. This event established 81.0% as a key support level, which has held since. The prior peak of 93.0% acts as a resistance level. Overall market sentiment remains highly confident that the condition will be met, as the price has consistently stayed above 80%. However, the market's reaction to conflicting data—balancing lower long-term professional forecasts against higher current inflation reports—indicates that traders are actively repricing the probability within this high-confidence range.
  • CPI stands at 4.2% (May 2026); analysts forecast 4.5% peak by year-end.
  • Energy-driven supply shock is a key catalyst for expected inflation.
  • Survey of Professional Forecasters projects 6.0% annualized CPI for Q2 2026.
  • Producer Price Index data suggests re-accelerating persistent inflationary pressures.
  • H2 2026 geopolitical events could significantly impact the energy component.

Who Wins and Why

Outcome Market Model Why
Above 4.5% 36.0% 47.9% Analysts explicitly forecast CPI to peak at 4.5% by year-end, driven by broad inflationary pressures.
Above 4.4% 59.0% 60.1% Analysts forecast CPI to peak at 4.5% by year-end, making exceeding 4.4% likely.
Above 4.2% 86.0% 86.1% Research does not highlight strong supporting evidence.
Above 5.0% 15.0% 17.5% Research does not highlight strong supporting evidence.
Above 4.3% 72.0% 72.5% Research does not highlight strong supporting evidence.

Current Context

Recent inflation data and expert forecasts present a mixed outlook. Headline CPI was reported at 4.2% year-over-year in May 2026, an increase from 3.8% in April, with a month-over-month rise of 0.5% [1][2]. This highlights a current period of elevated inflation. In contrast, the Philadelphia Fed’s Second Quarter 2026 Survey of Professional Forecasters, published May 15, 2026, projects headline CPI to average 3.5% on a Q4/Q4 2026 basis, with core CPI at 2.9% [3]. However, the Peterson Institute for International Economics (PIIE) argued in January 2026 that an “upside” scenario is more probable than the general consensus, suggesting CPI could potentially exceed 4% by the end of 2026 [4].
Prediction markets indicate strong probabilities for higher inflation levels. Polymarket hosts a contract on how high inflation will get in 2026, which resolves based on one-decimal-place BLS monthly CPI releases [5]. A Polymarket-style contract summarized by Lines.com for "Above 3%" CPI in 2026 shows a market probability of 98.7% that US inflation will exceed 3% at any point during the year [6]. Kalshi’s market for "Inflation in June 2026 (CPI YoY)" displays a substantial probability mass, approximately 80%, for CPI to be above 4.0% for that month [7]. Meanwhile, a Coinbase prediction market for "CPI year-over-year in Jun 2026?" suggests a comparatively low probability for CPI to be exactly 4.0% year-over-year, with the outcome priced at 17¢ versus 89¢ for "No" [8].
Sources (8)
  1. 1US CPI: May brings relief on core inflation but consumer still underwater - RBC Economicsrbc.com
  2. 2US inflation rises to 4.2%, hitting a three-year high as fuel prices rise | Euronewseuronews.com
  3. 3Second Quarter 2026 Survey of Professional Forecastersphiladelphiafed.org
  4. 4The risk of higher US inflation in 2026 | PIIEpiie.com
  5. 5How high will inflation get in 2026? Predictions & Odds | Polymarketpolymarket.com
  6. 6Will US Inflation Exceed Three Percent in 2026?lines.com
  7. 7Inflation in June 2026 (CPI YoY) Odds & Predictionskalshi.com
  8. 8CPI year-over-year in Jun 2026? | Prediction Markets | Coinbasecoinbase.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Significant Price Movements

Notable price changes detected in the chart, along with research into what caused each movement.

Outcome: Above 4.4%

📈 June 10, 2026: 20.0pp spike

Price increased from 39.0% to 59.0%

What happened: The primary driver was the announcement on June 10, 2026, that the May 2026 Consumer Price Index (CPI) year-over-year inflation rate hit 4.2%, marking a three-year high [1][2]. This traditional news report, particularly its attribution to energy price surges from an ongoing geopolitical conflict, likely intensified concerns that inflation would soon surpass the 4.4% threshold considered significant for potential Federal Reserve hawkishness [1][2][3]. Given the provided research contains no information on social media activity, traditional news was the primary driver.

📉 June 08, 2026: 13.0pp drop

Price decreased from 60.0% to 47.0%

What happened: The primary driver of the prediction market price drop was the release of the US Consumer Price Index (CPI) for May 2026 on or around June 08, 2026 [4]. Although the reported CPI of 4.2% year-over-year was a three-year high, driven by energy price spikes [5][6], market participants likely interpreted this figure as either lower than their prior expectations for May or as a sign that the annual peak inflation was less likely to exceed 4.4%. This re-assessment likely decreased the perceived probability of CPI going "Above 4.4%" this year. Social media activity was not identified as a factor in this movement, making it irrelevant.

Outcome: Above 4.5%

📉 June 09, 2026: 13.0pp drop

Price decreased from 46.0% to 33.0%

What happened: The primary driver of the 13.0 percentage point drop on June 09, 2026, was likely the market's anticipation of the May 2026 Consumer Price Index (CPI-U) data. Although the official May CPI-U of 4.2% Year-over-Year was released on June 10, 2026, it "met market expectations" [7], indicating that traders on June 09 had likely priced in a reading below the 4.5% threshold. This expectation, aligning with the Q2 2026 Philadelphia Fed Survey of Professional Forecasters predicting 2026 headline CPI to average 3.5%, diminished confidence in inflation reaching above 4.5% [8]. Social media was irrelevant as a primary driver due to a lack of evidence.

📉 May 31, 2026: 9.0pp drop

Price decreased from 69.0% to 60.0%

What happened: The 9.0 percentage point drop in the "Above 4.5%" outcome on May 31, 2026, was primarily driven by a collective shift in economic expectations for the upcoming May 2026 CPI release [1][9]. Market participants likely anticipated a headline CPI figure below 4.5%, a sentiment later validated when the US Bureau of Labor Statistics reported May 2026 CPI at 4.2% on June 10, 2026 [1][10][2][11][5]. This movement reflects volatility in prediction market probability reallocations as forecasts adjusted, rather than a 9 percentage point change in the actual inflation rate [9]. Social media activity was irrelevant, as no related posts from key figures or viral narratives were identified as influencing this price movement.

Outcome: Above 4.2%

📉 June 05, 2026: 12.0pp drop

Price decreased from 93.0% to 81.0%

What happened: The primary driver of the 12.0 percentage point drop on June 05, 2026, was likely the announcement of the Philadelphia Fed's Second Quarter 2026 Survey of Professional Forecasters [8]. This survey revealed that the 2026 headline CPI (4Q/4Q annual average basis) is expected to average 3.5% [8], which is significantly below the "Above 4.2%" threshold for the market outcome. This traditional news announcement, if released on or immediately preceding June 05, 2026, would have directly led to decreased expectations for CPI exceeding 4.2% by year-end. Social media activity was irrelevant, as no related posts or viral narratives are mentioned in the provided sources.
Sources (11)
  1. 1Inflation topped 4% in May as CPI surged to its highest level in more than 3 years - CBS Newscbsnews.com
  2. 2Inflation rises to a 3-year high on spiking gas prices, highlighting affordability challenges | PBS Newspbs.org
  3. 3May CPI Data Expected to Hit 4.2%: Rate Cuts Dead for 2026?tokenist.com
  4. 4United States: Core CPI pressures stay elevated – TD Securitiesfxstreet.com
  5. 5US Inflation Rate Accelerates to Fresh 2023-Highstradingeconomics.com
  6. 6Inflation rises to a 3-year high on spiking gas prices, squeezing Americans financially - ABC Newsabcnews.com
  7. 7Consumer Price Index News Release - 2026 M05 Resultsbls.gov
  8. 8Second Quarter 2026 Survey of Professional Forecastersphiladelphiafed.org
  9. 9[PDF] Geopolitical Threats and the New Inflation Decouplingpapers.ssrn.com
  10. 10Energy pushes inflation above 4 percent for first time in three years - Newsweeknewsweek.com
  11. 11US inflation rises to 4.2%, hitting a three-year high as fuel prices rise | Euronewseuronews.com

4. Market Data

Contract Snapshot

A "Yes" resolution occurs if any Consumer Price Index (CPI YoY) report for 2026 is above 4.2%, verified from the Bureau of Labor Statistics; otherwise, it resolves to "No." The market opened on April 10, 2026, and will close and expire early if the CPI condition is met, with payout projected 30 minutes after closing. If the event does not occur early, the market will close by January 1, 2027, at 8:29 am EST.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Above 4.2% $0.94 $0.98 86%
Above 4.3% $0.72 $0.98 72%
Above 4.4% $0.59 $0.96 59%
Above 4.6% $0.99 $1.00 46%
Above 4.5% $0.73 $0.63 36%
Above 4.9% $0.99 $1.00 25%
Above 5.0% $0.30 $1.00 15%
Above 4.7% $0.99 $1.00 0%
Above 4.8% $0.99 $1.00 0%

Market Discussion

The US Consumer Price Index (CPI) for May 2026 was reported at 4.2% year-over-year, marking a three-year high and the third consecutive month of acceleration [1][2][3]. Leading forecasts diverge, with the June 2026 UCLA Anderson Forecast projecting headline CPI to peak near 4.5% by the end of 2026 due to energy pressures, while the Q2 2026 Survey of Professional Forecasters projects 2026 Q4/Q4 average headline CPI at 3.5% [4][5]. Financial markets, concerned about persistent inflation spreading more broadly, have shifted to pricing in potential interest rate hikes [6][7][8].

Sources (8)
  1. 1Inflation rises to a 3-year high on spiking gas prices, highlighting affordability challenges | PBS Newspbs.org
  2. 2US Inflation Rate Accelerates to Fresh 2023-Highstradingeconomics.com
  3. 3US inflation rises to 4.2%, hitting a three-year high as fuel prices rise | Euronewseuronews.com
  4. 4UCLA Anderson Forecast Says Oil Shock Has Replaced Tariffs as Leading Risk to U.S. Economy | Morningstarmorningstar.com
  5. 5Second Quarter 2026 Survey of Professional Forecastersphiladelphiafed.org
  6. 6Tomorrow’s CPI Expected at 4.2%, While Core Projected at 2.9%: June 9, 2026interactivebrokers.com
  7. 7Wall Street’s CPI War Room: Will The Fed Be Holding A Fire Hose Or A Blowtorch?thedarksideoftheboom.substack.com
  8. 8US CPI preview Jobs shock turns inflation into a live trading event | Saxohome.saxo

5. Trust Index

Octagon Trust Index Kalshi 63 Caution

Order book is critically thin.

Primary risk· Trade quality

How it adds up
Integrity80% of score71Good

Info fairness is low (40), but Integrity averages all three scores, so the other two pull it up. Only a critically low score would cap the total.

Trade quality20% of score30High Risk

Includes the cost to trade: a $1,000 order can't be filled here because the order book is too thin.

Trust score63Caution

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 3 don't apply · 3 awaiting data
Market integrity
88Strong

Outcome is hard to influence

Large tradesTrade signals · medium confidence

Largest single print on KXHIGHINFLATION-26DEC-T4.5 carried 39% of its $2,117 tape (print is 42d old)

Screened clean
Thin-volume movesNo significant move Clear
Size patternsNo distribution read Clear
2 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Info fairness
40High Risk
Information exposureStructural risk · medium confidence

Scheduled statistical release: the agency holds the number before publication

4 screens not run
Move vs. catalyst · data source not connected
Longshot repricing · data source not connected
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · data source not connected
Resolution quality
92Strong

Resolution mechanism is dependable

No suspicious activity on any screen

Resolution rules read: Clear

Liquidity
33Very thin

Hard to fill near the screen price

8 contracts · worst first · 1 below the volume floor — not scored

Above 5.0%4
Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Above 4.2%36
Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 55% vs realized 11%
Above 4.5%40
Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 42% vs realized 8%
Above 4.3%47
Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 57% vs realized 5%
Above 4.4%—
No recent trading to measure

No recent trading to measure

Above 4.6%—
No recent trading to measure

No recent trading to measure

Above 4.7%—
No recent trading to measure

No recent trading to measure

Above 4.9%—
No recent trading to measure

No recent trading to measure

Move quality
86Confirmed

Moves came with real volume

8 contracts · worst first · 1 below the volume floor — not scored

Above 4.7%65
Mostly confirmed · medium confidence

Volume opposes the move over 5d

Above 5.0%69
Mostly confirmed · medium confidence

Volume opposes the move over 7d

Above 4.3%73
Confirmed · medium confidence

Volume confirms the move over 7d

Above 4.5%91
Confirmed · medium confidence

Volume confirms the move over 7d

Above 4.2%—
No significant move (24h)

Price was stable over the last 24 hours.

Above 4.4%—
No trading in 7d

No trades in the last 7d — nothing to confirm

Above 4.6%—
No significant move (7d)

Price was stable over the last 7 days.

Above 4.9%—
No trading in 3d

No trades in the last 3d — nothing to confirm

Rule clarity
95Clear

Counts toward Resolution quality, not here

8 contracts · worst first · 1 below the volume floor — not scored

Above 5.0%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.2%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.3%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.4%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.5%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.6%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.7%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.9%95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Trade quality
30High Risk

Order book is critically thin

Thin market — entering or exiting at fair value will be difficult.

Outcome quality 37 (notional-weighted across 4 scored legs)

$100 order: 11.3c slippage (~34% of a 33c contract)

$1,000 order: book too thin to fill

$10,000 order: book too thin to fill

1 below the volume floor — not scored

Above 5.0%4Market scoreLiquidity4Move quality69Rule clarity95
Why 4
Liquidity
4 · Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Move quality
69 · Mostly confirmed · medium confidence

Volume opposes the move over 7d

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.2%36Market scoreLiquidity36Move quality–Rule clarity95
Why 36
Liquidity
36 · Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 55% vs realized 11%
Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.3%47Market scoreLiquidity47Move quality73Rule clarity95
Why 47
Liquidity
47 · Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 57% vs realized 5%
Move quality
73 · Confirmed · medium confidence

Volume confirms the move over 7d

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.4%–Market scoreLiquidity–Move quality–Rule clarity95
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
No trading in 7d

No trades in the last 7d — nothing to confirm

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.5%40Market scoreLiquidity40Move quality91Rule clarity95
Why 40
Liquidity
40 · Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 42% vs realized 8%
Move quality
91 · Confirmed · medium confidence

Volume confirms the move over 7d

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.6%–Market scoreLiquidity–Move quality–Rule clarity95
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
No significant move (7d)

Price was stable over the last 7 days.

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.7%–Market scoreLiquidity–Move quality65Rule clarity95
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
65 · Mostly confirmed · medium confidence

Volume opposes the move over 5d

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Above 4.9%–Market scoreLiquidity–Move quality–Rule clarity95
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
No trading in 3d

No trades in the last 3d — nothing to confirm

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear

underwriting_v1.4 · computed Sep 23, 2026

6. How do the Federal Reserve's Q2 2026 inflation projections compare with those from the Survey of Professional Forecasters?

SPF Q2 2026 Headline CPI6.0% annualized [1]
FOMC 2026 Median PCE Inflation2.7% (Q4/Q4) [2][3]
SPF Q2 2026 Core CPI3.2% annualized [1]
Inflation projections for Q2 2026 vary significantly between sources. The Survey of Professional Forecasters (SPF) projects Q2 2026 headline Consumer Price Index (CPI) inflation at an annualized rate of 6.0% [1]. In contrast, the Federal Reserve’s Federal Open Market Committee (FOMC) median projection for Personal Consumption Expenditures (PCE) inflation for the full year 2026 (Q4/Q4) stands at 2.7% [2][3]. These figures are not directly comparable due to differences in the specific inflation measures used (CPI versus PCE) and their reporting horizons [1][2][3].
Core inflation projections also show differences between the Fed and SPF. For core inflation, the Survey of Professional Forecasters forecasts Q2 2026 core CPI at an annualized rate of 3.2% [1]. The Federal Reserve’s FOMC median core PCE inflation for 2026 (Q4/Q4) is 2.5%, as detailed in the March 18, 2026 Summary of Economic Projections [2][3]. These core inflation figures are also not directly comparable due to differing metrics and reporting periods. Separately, the Polymarket CPI-in-2026 resolution utilizes a 12-month CPI change over any month in 2026, which is distinct from these specific Q2 2026 projections [4].
Sources (4)
  1. 1Second Quarter 2026 Survey of Professional Forecastersphiladelphiafed.org
  2. 2March 18, 2026: FOMC Projections materials, accessible versionfederalreserve.gov
  3. 3Summary of Economic Projections, March 18, 2026federalreserve.gov
  4. 4How high will inflation get in 2026? Predictions & Odds | Polymarketpolymarket.com

7. What evidence from the Producer Price Index (PPI) and recent wage growth data supports the market's expectation for high inflation through 2026?

PPI Year-over-year increase6.0% (April 2026) [1][2]
Probability of CPI >= 4.0% in 202695% [3]
Atlanta Fed Wage Growth Tracker3.6% (April 2026) [4]
Producer Price Index data suggests persistent inflationary pressures are re-accelerating. The PPI for final demand saw a 1.4% month-over-month increase in April 2026, culminating in a 6.0% unadjusted year-over-year rise, which is the highest recorded since December 2022 [1][2]. This re-acceleration is attributed to broad-based pressures, including tariffs and energy prices, leading analysts to describe the PPI as "flashing red" and potentially preventing Federal Reserve rate cuts in 2026 [2][5]. Reflecting these concerns, market expectations, as indicated by Kalshi contracts, show a 95% probability for year-over-year Consumer Price Index (CPI) inflation to reach at least 4.0% in some month during 2026, with a specific contract pricing June 2026 CPI at "Exactly 4.3%" [3][6].
Wage growth indicators also point to sustained inflationary trends. The New York Fed's trend nominal wage inflation (TWIn) measure has stabilized near 2017–19 levels, suggesting that wage-inflation persistence is not unwinding quickly [7]. While real average hourly earnings modestly increased by 0.3% over the year ending March 2026—a result of nominal earnings rising 3.5% against a 3.3% CPI increase—nominal wage growth continues [8]. Similarly, the Atlanta Fed's Wage Growth Tracker showed nominal wage growth at 3.6% in April 2026, despite a slight decrease from 3.9% in March [4]. These combined factors reinforce market expectations for high inflation through 2026.
Sources (8)
  1. 1Producer Price Index News Release - 2026 M04 Resultsbls.gov
  2. 2US producer prices surprise with largest increase in four yearsreuters.com
  3. 3How high will inflation get this year? Odds & Predictions 2026kalshi.com
  4. 4Wage Growth Tracker - Federal Reserve Bank of Atlantaatlantafed.org
  5. 5The US Producer Price Index: An early warning system for inflation - RBC Economicsrbc.com
  6. 6CPI year-over-year in June? Odds & Predictions 2026kalshi.com
  7. 7Assessing the Current State of Wage Inflation - Liberty Street Economicslibertystreeteconomics.newyorkfed.org
  8. 8Real average hourly earnings increased 0.3 percent from March...bls.gov

8. What upcoming OPEC+ meetings or geopolitical events in H2 2026 could trigger a significant move in the energy component of CPI?

OPEC+ Core Group MeetingJuly 5, 2026 [1][2]
OPEC+ Ministerial MeetingNovember 29, 2026 [1][2]
US Headline Inflation (May 2026)4.2% [3][4][5]
H2 2026 events could significantly impact energy component of CPI. Future Consumer Price Index levels in the second half of 2026 are highly sensitive to both the duration of energy supply disruptions and the speed of production restoration efforts [3][4][5]. Key developments include upcoming OPEC+ meetings and evolving situations concerning the Strait of Hormuz.
OPEC+ has crucial meetings in H2 2026 affecting oil supply. A core group meeting is scheduled for July 5, 2026, to establish August production targets [1][2]. Additionally, a ministerial meeting is slated for November 29, 2026 [1][2]. A comprehensive review of the OPEC+ production baseline is also anticipated to conclude in September 2026, which may shape the group's future supply strategies [2][5].
Strait of Hormuz remains a critical energy chokepoint influencing prices. Its continued closure amidst the US-Iran conflict has been identified as a primary driver of energy price volatility, with its potential reopening being a key variable for inflation in H2 2026 [3][6][5]. Energy price spikes have already significantly contributed to US CPI, with headline inflation reaching 4.2% in May 2026 [3][4][5].
Sources (6)
  1. 1OPEC+ reaffirms commitment to existing oil production agreement through 2026 - Business & Economy - TASStass.com
  2. 2OPEC+ July Target Hike: What It Means for Oil Supplydiscoveryalert.com.au
  3. 3How a prolonged Middle East crisis would impact energy prices and the EU economy - Joint Research Centrejoint-research-centre.ec.europa.eu
  4. 4[PDF] United States Economic Outlook - University of Michiganlsa.umich.edu
  5. 5Short-Term Energy Outlookeia.gov
  6. 6US inflation risks rise as Hormuz closure enters 4th month – Chemicals and the Economyicis.com

9. How has the trend in core CPI (excluding food and energy) in 2026 differed from headline CPI, and what does this imply for future readings?

Headline CPI (May 2026)4.2% year-over-year [1][2][3]
Core CPI (May 2026)3.1% year-over-year [1][2][3]
Energy Price Increase (12 months)23.5% [4][2]
Core CPI significantly lagged headline inflation in May 2026. As of May 2026, the US headline Consumer Price Index (CPI) recorded a 4.2% year-over-year increase, while core CPI, which excludes volatile food and energy prices, rose by a more modest 3.1% year-over-year [1][2][3]. This 1.1 percentage point disparity was primarily driven by a substantial increase in energy prices, which surged by 23.5% over the past 12 months and 3.9% month-over-month [4][2].
Future inflation projections show moderation but upward revisions. Economists predict headline inflation will moderate to 2.5% by the fourth quarter of 2026, with core inflation anticipated to end the year at 2.7% [5]. Despite this expected moderation, overall inflation forecasts for 2026 have been revised upward; initial predictions earlier in 2026 for both headline and core inflation averaged around 2.6%, but more recent projections now indicate full-year averages closer to 3.5% for headline and 2.9% for core [5].
Sources (5)
  1. 1Consumer Price Index News Release - 2026 M05 Resultsbls.gov
  2. 2Consumer Price Index Summary - 2026 M05 Resultsbls.gov
  3. 3Table 1. Consumer Price Index for All Urban Consumers (CPI-U): U. S. city average, by expenditure category - 2026 M05 Resultsbls.gov
  4. 4US CPI: May brings relief on core inflation but consumer still underwater - RBC Economicsrbc.com
  5. 5Inflation rate projected to hit 6% in the second quarter, top economic...cnbc.com

10. How do implied probabilities for CPI exceeding 4.0% on Kalshi compare with similar prediction market contracts on Polymarket?

Kalshi CPI >= 4.0% (2026) probability56% (as of June 10, 2026) [1][2]
Polymarket 2026 Inflation Contract TypeCategorical or threshold-based event markets for 'How high will inflation get in 2026?' [3][4][5][6][7][8][9][10]
Kalshi Regulatory StatusCFTC-regulated, restricted to US residents [2][11]
Kalshi's market indicates 56% probability of 4.0% CPI in 2026. Kalshi's prediction market contracts suggest an implied probability of approximately 56% that the Consumer Price Index (CPI) year-over-year inflation will reach or exceed 4.0% at any point in 2026, as observed on June 10, 2026 [1][2]. A direct numerical comparison for this specific 4.0% threshold on Polymarket is not possible due to insufficient available information. Kalshi provides various inflation markets, including "directional" options like 'Above X%', and "mutually exclusive" point-estimate markets [6][7][8][9][10].
Polymarket offers comparable inflation contracts with threshold-based event markets. Polymarket features comparable contracts, such as "How high will inflation get in 2026?", which operate similarly to Kalshi's "At least X%" directional markets [3][4][5]. These contracts resolve to "Yes" if the CPI year-over-year inflation surpasses specified thresholds in any month of 2026. Generally, Polymarket's primary inflation markets for 2026 are structured as categorical or threshold-based event markets [6][7][8][9][10].
Platforms differ significantly in regulation, user base, and market dynamics. Although both platforms enable traders to hedge or speculate on macroeconomic events, they exhibit notable differences in regulatory status and user base [2][11]. Kalshi functions as a CFTC-regulated exchange, which restricts its access to residents of the United States. In contrast, Polymarket operates as an international, crypto-based platform [2][11]. These distinctions can influence both the liquidity within each market and the implied probabilities observed on the respective platforms [2][11].
Sources (11)
  1. 1How high will inflation get this year? | Prediction Markets | CoinRithmcoinrithm.com
  2. 2Live Macro Odds: Kalshi vs. Polymarket Probabilities | PredictionBriefpredictionbrief.io
  3. 3How high will inflation get in 2026? Predictions & Odds | Polymarketpolymarket.com
  4. 4How high will inflation get in 2026? Predictions & Odds | Polymarketpolymarket.com
  5. 5How high will inflation get in 2026? Predictions & Odds | Polymarketpolymarket.com
  6. 6CPI year-over-year in May 2026? Odds & Predictionskalshi.com
  7. 7Inflation in May 2026 (CPI YoY) Odds & Predictions - Kalshikalshi.com
  8. 8CPI year-over-year in June? Odds & Predictions 2026kalshi.com
  9. 9CPI year-over-year in July? Odds & Predictions 2026kalshi.com
  10. 10CPI in May Odds & Predictions 2026 - Kalshikalshi.com
  11. 11Inflation Tracker — Live CPI Prediction Market Probabilities | PredictionMarketsPickspredictionmarketspicks.com

11. What Could Change the Odds

Key Catalysts

As of June 2026, analysts forecast headline CPI inflation to peak at 4.5% year-over-year by the end of 2026, primarily due to an energy-driven supply shock caused by the war in Iran and the closure of the Strait of Hormuz [1][2][3]. Bullish catalysts for inflation, indicating upward pressure, include rising energy costs from this oil shock, continued geopolitical instability, and fiscal expansion [1][4]. The prevailing economic environment is marked by persistent inflationary pressure [5].
Conversely, factors that could exert downward pressure on inflation and act as bearish catalysts include the potential resolution of the Iran conflict, a resumption of disinflationary trends in core goods, and a weakening growth outlook [1][4]. Due to persistent inflationary pressure, the Federal Reserve has pivoted away from expected rate cuts, with some market participants now pricing in a potential interest rate hike by late 2026 or early 2027 under new Fed Chair Kevin Warsh [5][6][3].

Key Dates & Catalysts

  • Expiration: April 02, 2027
  • Closes: January 01, 2027
Sources (6)
  1. 1UCLA Anderson Forecast Says Oil Shock Has Replaced Tariffs as Leading Risk to U.S. Economy | UCLA Anderson School of Managementanderson.ucla.edu
  2. 2UCLA Anderson Forecast Says Oil Shock Has Replaced Tariffs as Leading Risk to U.S. Economy | Morningstarmorningstar.com
  3. 3US CPI Preview: Inflation to Spike to 3-Year Highs Above 4%? | Investing.cominvesting.com
  4. 4Oil Prices and Inflation Diverge: What It Means for the Fedstockwirex.com
  5. 5SF FedViews: Uncertainty Clouds the Outlook on Inflation and the Economy - San Francisco Fedfrbsf.org
  6. 6June 10 CPI Report: What Today's Inflation Data Means for Interest Rates and Your Investments | Blogerroomblogerroom.com

13. Historical Resolutions

Historical Resolutions: 12 markets in this series

Outcomes: 12 resolved YES, 0 resolved NO

Recent resolutions:

  • KXHIGHINFLATION-26DEC-T4.1: YES (Jun 10, 2026)
  • KXHIGHINFLATION-26DEC-T4.0: YES (Jun 10, 2026)
  • KXHIGHINFLATION-26DEC-T3.9: YES (Jun 10, 2026)
  • KXHIGHINFLATION-26DEC-T3.8: YES (Jun 10, 2026)
  • KXHIGHINFLATION-26DEC-T3.7: YES (May 12, 2026)