Short Answer

McDonald's U.S. credit card spend for September 2026 is expected to register an index value above 97, driven by alternative data indicating approximately 0.3% year-over-year growth and management's positive outlook for the month, with the market pricing this at 99.0%.

1. Market Behavior & Drivers

The price collapse in this market was driven by a downward revision in expectations for McDonald's September U.S. card spend, from "modestly positive" to "near flat" year-over-year. The market, which measures a Carbon Arc spending index against the prior year, saw the probability of a higher-growth outcome fall from 22% on September 21 to 1% by October 5. This indicates that as the month's data finalized, forecasts solidified around a result that would not meet this contract's threshold for positive growth.
This view is consistent with trading in related contracts. For example, the market for spend declining less than 3% (the "Above 97" contract) was priced near 99% on October 5. This high probability, combined with the near-zero probability in the chart, effectively brackets the market's expectation for the final index reading to a tight range just around 100, representing flat performance. The upside potential initially priced into this market was eliminated.
  • McDonald's credit card spend is highly likely Above 97, per alternative data. Iceflower data indicates ~0.3% year-over-year growth, aligning with management expectations. * This suggests spending will not resolve Above 101, Above 103, or Above 106.

Current Context

McDonald's September card spend is expected near flat to modestly positive. The market "McDonald’s Credit Card Spend in September" measures Carbon Arc’s U.S. aggregated credit/debit-card spend index against the same month a year earlier, with 100 representing flat performance [1][2]. This market is scheduled to resolve on October 7, 2026 [1]. As of October 5, 2026, the Above 97 contract was priced at approximately 99%, indicating a near-certainty that September card spend declined by less than 3% year-over-year [2]. While the market page displayed multiple thresholds, including Above 88, 91, and 93, it did not expose complete live probabilities for every option. This supports strong confidence in avoiding a severe decline rather than providing a precise point estimate [1][2]. Advan's September 24 assessment estimated McDonald’s U.S. comparable-sales expectation as roughly flat, noting that September underlying traffic had flattened following July and August weakness amid renewed gas-price pressure [3]. An alternative transaction-data provider, Iceflower, ranked McDonald’s first among tracked U.S. fast-food chains by card spend and reported a roughly 0.3% year-over-year increase in its category share; Iceflower explicitly cautions that it publishes relative trends, not company revenue [4].
Q2 2026 showed mixed results, with risks from low-income consumers. McDonald’s Q2 2026 results included a 0.8% rise in U.S. comparable sales despite declining guest counts, while global comparable sales increased about 1.3% [5][6]. Analysts identified value-program execution and low-income consumer pressure as key risks [6]. McDonald’s Q3 2026 results are the next major financial catalyst, scheduled for October 22, 2026, with revenue estimates ranging around $7.33–$7.37 billion and EPS estimates around $3.41–$3.42 across various sources [6][7]. The company’s September 23 investor day introduced the McDonald’s > NEXT strategy, outlining targets such as nearly 2.5% systemwide-sales contribution from unit expansion in 2027, low-to-mid-50% operating margins by 2030, and approximately 250 basis points of restaurant-level efficiency gains [8][9][10]. This aligns with a cautious-growth outlook seen in a separate prediction market for Q3 2026 global comparable-sales growth, which showed roughly 86% odds of growth above 0% as of October 5, but materially less certainty for growth above 1.5% [11]. Upside would require renewed traffic and successful value execution, while downside risks include gas inflation, weak low-income demand, and continued traffic losses [1][2][3][6].
Sources (11)
  1. 1McDonald's Credit Card Spend in Septemberkalshi.com
  2. 2McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  3. 3Advan Websiteadvanresearch.com
  4. 4McDonald's: 14,625 Stores, Sales Trends & Growth 2026iceflower.ai
  5. 5McDonald's (MCD) Q2 2026: IOM Operating Income Up 5.4% aslinevestnews.com
  6. 6McDonald's (MCD) Earnings Preview: Can the Golden Arches Regain U.S. Momentum?tickeron.com
  7. 7McDonald's Corporation (MCD) Earnings Reports & Dates | FXEmpirefxempire.com
  8. 8Exhibit 99.1 - Investor Update 2026kioskindustry.org
  9. 9MCDONALDS CORP — Investor Presentation 2026financialfilings.com
  10. 10McDonald's Corporation (MCD) Earnings Call Transcript & Summaryearningscalls.dev
  11. 11McDonald's Corporation global comparable sales growth in Q3 2026 - Kalshi Odds | CoinRithmcoinrithm.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 97

📈 October 04, 2026: 86.0pp spike

Price increased from 3.0% to 89.0%

What happened: The primary driver of the reported 86.0 percentage point spike for 'Above 97' in McDonald's September credit card spend is not clearly identifiable from the provided research, with the 86.0pp figure itself appearing to be a misattribution in the sources [1]. While McDonald's announced an $8.5 billion long-term investment strategy on September 23, this positive news was contradicted by reports of weak U.S. demand and card-data declines through August, making it an ambiguous catalyst for a strong positive market move on September spend [2]. No specific viral promotion for September 2026 or clear data release was identified that would cause such a dramatic shift [3]. Social media was irrelevant, primarily featuring negative commentary regarding removed playgrounds or AI pricing concerns that contributed to a stock sell-off [4].

Outcome: Above 95

📈 October 03, 2026: 39.0pp spike

Price increased from 4.0% to 43.0%

What happened: The "39.0 percentage point spike" refers to a decline for the "Above 106" contract; the "Above 95" contract instead saw a +55.0 percentage point increase on October 3, 2026 [1][5]. No credible social media activity, news article, or official announcement was found to explain this price movement [1][5][6][7]. The evidence suggests the repricing likely occurred due to incoming or updated Carbon Arc data or market liquidity factors, rather than external news or social media [1][5]. Social media was therefore irrelevant as a primary driver.

Outcome: Above 93

📈 October 02, 2026: 34.0pp spike

Price increased from 42.0% to 76.0%

What happened: The primary driver of the 34.0 percentage point spike in the "Above 93" outcome for McDonald's September credit card spend market on October 2, 2026, was McDonald's Investor Day [8]. On that day, the company announced an $8.5 billion franchisee support program and highlighted AI and digital growth strategies, with one article expecting positive September U.S. sales after earlier declines [8]. This positive official news likely led traders to significantly increase their prediction for September spend, with social media activity on the date being mostly general market sentiment or negative concerns about stock performance and AI pricing, rather than a specific driver for the spend market [9]. Social media was mostly noise, while traditional news was the primary driver.

📉 September 29, 2026: 21.0pp drop

Price decreased from 73.0% to 52.0%

What happened: The primary driver of the 21.0 percentage point drop in the "Above 93" outcome for McDonald's September credit card spend on September 29, 2026, appears to be market repricing around McDonald's September 23, 2026, investor-day announcement of its "McDonald's > NEXT" strategy [10]. During this event, management commented that U.S. comparable sales were positive in September, despite being negative in July and August [10]. No specific social media activity, influential posts, or viral narratives were identified as explicitly attributing to or leading this market movement [11]. Consequently, social media was irrelevant to this prediction market price drop.

Outcome: Above 91

📉 October 01, 2026: 11.0pp drop

Price decreased from 87.0% to 76.0%

What happened: The provided web research does not substantiate an 11.0 percentage point drop in the "McDonald's Credit Card Spend in September" prediction market price on October 01, 2026. The 11% figure cited in contemporaneous coverage refers to McDonald’s share-price decline during September, not a drop in the card-spend prediction market, which remained unresolved as of October 5 [1]. As of October 5, the market implied an expectation for September card spend to be at least 98, suggesting confidence in a higher outcome rather than a significant drop relative to the "Above 91" threshold [1]. Therefore, social media was irrelevant, as the premise of the prediction market price movement is not supported by the available evidence.
Sources (11)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2McDonald's Corporation (MCD) Earnings Call Transcript & Summaryearningscalls.dev
  3. 3Sector Spotlight - Quick Service Restaurants | Welcome to Carbon Arc Docsdocs.carbonarc.ai
  4. 4McDonald's Is Spending Billions to Figure Out Why People Stopped Coming — an X Post Says the Answer Is the Playground They Removeddailydot.com
  5. 5Burger King: 7,912 Stores, Sales Trends & Growth 2026iceflower.ai
  6. 6Chick-fil-A Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  7. 7Insights exchange for the model-driven economydocs.carbonarc.ai
  8. 8McDonald's could soon unlock a major revenue stream - Fancy Hintsfancyhints.com
  9. 9All In On McDonald's Stock? Social Media User Wants Advice on Fast Food Giant, Investors Aren't Lovin' It | Longbridgelongbridge.com
  10. 10Advan Websiteadvanresearch.com
  11. 11McDonald's Credit Card Spend in October - Kalshi Odds | CoinRithmcoinrithm.com

4. Market Data

Contract Snapshot

This Kalshi market resolves based on McDonald's Credit Card Spend in September. A YES resolution occurs if the reported spend value for September is above the specific contract's threshold (e.g., "Above 99"), and a NO resolution occurs if it is at or below that threshold. The "Max payout" date for this market is noted as October 6, 2026.

Market Discussion

As of October 5, 2026, the prediction market for McDonald's Credit Card Spend in September strongly favored year-over-year growth, pricing the "Above 97" threshold at 99% [1][2]. This contract uses U.S. aggregated credit-and-debit-card transaction data as an alternative-data nowcast [1][3][4], with notable trading activity on October 5, 2026, primarily supporting positive growth thresholds [5].

Sources (5)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2McDonald's Credit Card Spend in Septemberkalshi.com
  3. 3McDonald's Credit Card Spend in September - Probabilidades na Kalshi | CoinRithmcoinrithm.com
  4. 4McDonald's Credit Card Spend in September - Cotes Kalshi | CoinRithmcoinrithm.com
  5. 5News — top prediction-market movers | pdatapdata.world

5. What guidance did McDonald's management provide on their Q2 2026 earnings call regarding expectations for U.S. guest counts and value programs in Q3?

U.S. Q2 2026 Comparable Sales Growth0.8% (Q2 2026) [1][2]
U.S. Q3 Guest Count OutlookNo major near-term improvement expected (Q3 2026) [1][2]
Full U.S. Guest Count Recovery TargetBack-half or 2027 (Q2 2026 earnings call) [1][2]
McDonald's management tempered expectations for U.S. guest count improvement in Q3 2026. Management advised investors not to expect a major near-term improvement in U.S. guest counts for the third quarter, indicating that a fuller recovery was a back-half or 2027 objective rather than an immediate Q3 inflection [1][2]. To address this, the company plans to restore or increase targeted digital offers and simplify execution [1][2]. McDonald's also intends to redirect marketing efforts toward proven value propositions, such as Extra Value Meals, rather than solely relying on the under-$3 Every Day Affordable Price (EDAP) rollout [1][2].
U.S. performance in Q2 2026 faced several challenges, impacting sales and traffic. During the second quarter, U.S. performance was negatively affected by inconsistent execution of the Every Day Affordable Price (EDAP) menu, reduced digital offers, and an underperforming June FIFA campaign [1][2]. Consequently, U.S. comparable sales grew only 0.8% while traffic or guest counts declined [1][2].
Sources (2)
  1. 1McDonald's Q2 2026 Earnings: Revenue, EPS & Outlookbetafinch.com
  2. 2MCD Q2 Deep Dive: Execution Challenges Dominate U.S....stockstory.org

6. How do analyst expectations for McDonald's Q3 2026 U.S. comparable sales compare with the growth implied by alternative data from providers like Advan?

Q2 2026 U.S. Comp Sales (Actual)0.8% year over year [1]
Q2 2026 U.S. Comp Sales (Expected)0.9% [1][2]
September Card Spend ProbabilityAbove 97 with ~99% probability [3][4]
Analyst consensus for Q3 2026 U.S. sales is not yet established. Publicly available research does not provide a numeric analyst consensus for McDonald's Q3 2026 U.S. comparable sales, making a direct comparison with alternative data growth impossible [5]. For the preceding quarter, Q2 2026, McDonald's U.S. comparable sales grew 0.8% year over year, which was slightly below analyst expectations of 0.9% [1][2]. Q2 was previously considered the low point before an investor meeting in September [1].
Alternative data indicates strong September 2026 credit card spend for McDonald's. Alternative data from Carbon Arc's aggregated U.S. credit/debit-card panel for McDonald's Credit Card Spend in September indicated strong performance for September 2026. As of October 5, 2026, this data implied McDonald’s September card spend was above 97 with approximately 99% probability [3][4]. Additional thresholds showed a roughly 98% probability of being above 95 and approximately 15% probability of being above 104, suggesting a market-implied result likely above 97 but not confidently above 104 [3][4].
Alternative data differs from official comparable sales metrics. It is important to note the distinction between these data sources: Carbon Arc card spend is a September U.S. transaction-panel index, while McDonald’s comparable sales are company-defined quarterly sales at comparable restaurants [3][6]. Advan-style foot-traffic data and card-spend data serve as alternative indicators and are not identical to official accounting measures [6].
Sources (6)
  1. 1McDonald's names new US head as sales growth slows in...finance.yahoo.com
  2. 2Earnings call transcript: McDonald's Q2 2026 beats EPS,...ng.investing.com
  3. 3McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  4. 4News — top prediction-market movers | pdatapdata.world
  5. 5MCDX (McDonald's Tokenized Stock) At 52-Week Lowainvest.com
  6. 6ice_enforcement_combined_doc...wkrn.com

7. According to alternative data providers, how did McDonald's U.S. market share in fast-food card spend change in September 2026 relative to competitors like Chick-fil-A and Wendy's?

McDonald's Sept 2026 Spend Index PredictionAbove 97 on its year-over-year index (Kalshi pricing Above 97 at 99%) [1][2]
McDonald's Sept 2026 Spend vs. 2025Roughly stable to modestly positive [1][2]
Fast-Food Market Share Data (Sept 2026)Not available for U.S. fast-food card-spend market-share or comparable readings for Chick-fil-A and Wendy's [1][2]
U.S. fast-food market share data is unavailable from alternative sources. Alternative data disclosures for September 2026 do not provide specific U.S. fast-food card-spend market-share percentages. Furthermore, comparable September readings for competitors like Chick-fil-A and Wendy's are also absent from these disclosures [1][2]. This lack of information prevents a verifiable claim regarding whether McDonald's gained or lost market share relative to these competitors during the specified period [1][2].
Prediction markets indicate stable to positive McDonald's U.S. card spend. McDonald's September 2026 U.S. card spend was generally anticipated to be roughly stable or modestly positive compared to September 2025 [1][2]. As of October 5, 2026, prediction-market evidence suggested that McDonald's September 2026 U.S. card spend would index above 97 year-over-year. The Kalshi prediction market, which was scheduled to resolve on October 7, 2026, priced this "Above 97" outcome at 99% [1][2]. It is important to note that this measure represents a company-level spend index and not a fast-food category market-share series [1][2].
Sources (2)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2News — top prediction-market movers | pdatapdata.world

8. What is the typical reporting lag for the Carbon Arc U.S. spend index, and will preliminary September 2026 data be available before the market's October 7 resolution?

Typical reporting lag3-4 days after month-end [1][2][3][4]
Preliminary September 2026 data availabilityExpected before October 7, 2026 resolution [1][2]
McDonald's market resolution dateOctober 7, 2026 [1]
Carbon Arc typically reports complete monthly data within four days of month-end. The public daily system typically provides a complete monthly reading approximately 3-4 days after the month closes [1][2][3][4]. For instance, an indexed page was updated on October 4, 2026, at 9:29 AM ET, containing data through September 30, which indicates a normal operational lag of about four calendar days from month-end to publication [2][3][4]. Based on this typical pattern, preliminary September 2026 data is anticipated to be available before the McDonald's market's October 7, 2026 resolution [1][2].
Initial Carbon Arc data is preliminary and subject to potential revisions. While preliminary September 2026 data is expected before October 7—most likely between October 4 and 6—Carbon Arc explicitly states that month-to-date figures may change until the month closes, can be revised, and might also be delayed [2][3][4]. Consequently, the initial September monthly value should be considered preliminary rather than final upon its first publication [2][3][4]. The McDonald's market is scheduled to resolve on October 7, 2026, and its rules specify that settlement will be based on the first value reported by Carbon Arc, with subsequent corrections or revisions having no impact on the settlement [1].
Sources (4)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2Prisms — Daily Reference Data | Carbon Arccarbonarc.co
  3. 3Prisms — Daily Reference Data | Carbon Arccarbonarc.co
  4. 4Prisms — Daily Reference Data | Carbon Arccarbonarc.co

9. What key promotions and macroeconomic trends during September 2026 were most likely to influence McDonald's U.S. consumer spending?

September Credit Card Spend EffectModestly positive [1][2]
Prediction Market Spending IndexAbove 97 as of October 5 [1][2]
National Cheeseburger Day OfferFree Double Cheeseburger with $1+ purchase for MyMcDonald's Rewards members [3][4][5]
McDonald's September spending likely saw modest gains, supported by value. The net effect on McDonald's September credit card spending was most likely modestly positive, driven by strong value messaging and a high-visibility free-item event which supported transactions [1][2]. However, widespread discounting, competitive promotions, and unresolved macroeconomic pressure likely constrained the average check and overall upside [1][2]. The prediction market, measuring a year-over-year U.S. credit/debit-card spending index where 100 equals September 2025 spending, strongly favored spending above 97 as of October 5, indicating expectations of at least near-flat year-over-year spending [1][2].
National Cheeseburger Day and ongoing value offers boosted traffic. The clearest September 2026 demand catalyst was National Cheeseburger Day on September 18, where MyMcDonald's Rewards members could receive a free Double Cheeseburger with a minimum $1 purchase through the app, which likely lifted transactions and encouraged add-on spending on that specific day [3][4][5]. Throughout September, McDonald's maintained value-led offers, including McValue items under $3, $4 breakfast meal deals, $5 lunch/dinner meal deals, app-based rewards, and a new-user free Snack Wrap with a $1+ purchase; these likely supported traffic among price-sensitive consumers while potentially lowering the average ticket [6][7]. The app and loyalty ecosystem served as an important channel, with users earning 100 points per $1 on eligible purchases and recurring app deals, creating incentives to shift purchases into measurable digital/card transactions and increase visit frequency [6][7]. Around September 18, extensive competitive burger-chain promotions from Burger King, Wendy's, Carl's Jr., and delivery platforms created a category-wide discount environment that could increase overall restaurant visits but potentially dilute McDonald's share of promotional demand [8][5].
Macroeconomic trends remain directional due to limited September data. The available search results did not surface reliable September 2026 releases for CPI, employment, gasoline prices, or aggregate restaurant spending [1][9]. Therefore, macroeconomic conclusions should remain directional rather than asserting specific September readings. General economic discussions mentioned consumer spending potentially being hit again after three rate hikes [10], or additional consumer spending power being crimped [11]. Conversely, the Atlanta Fed was tracking 4% annualized growth for real consumer spending in Q3 [12].
Sources (12)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2News — top prediction-market movers | pdatapdata.world
  3. 3Best National Cheeseburger Day deals to grabcourierpostonline.com
  4. 4National Cheeseburger Day deals 2026orlandoonthecheap.com
  5. 5National Cheeseburger Day 2026: Burger deals at...foxbusiness.com
  6. 6Trending Now: McDonald's Menu Specials & New Itemsmcdonalds.com
  7. 7Best McDonald's Deals & Sales for September 2026dealnews.com
  8. 8National Cheeseburger Day deals at McDonald's, Burger...lufkindailynews.com
  9. 9McDonald's Credit Card Spend in September - Probabilidades na Kalshi | CoinRithmcoinrithm.com
  10. 10Daybreak Weekend: US Jobs, Burnham Conference, RBA Decision | Bloomberg Daybreak: US Editionyoutube.com
  11. 11Instant Reaction: The Fed Decides | Bloomberg Daybreak: US Editionyoutube.com
  12. 12US Economic Outlook amid Fed Tightening | Bloomberg Surveillanceyoutube.com

10. What Could Change the Odds

Key Catalysts

Near-term catalysts include prediction market resolutions. The Kalshi-linked McDonald's Credit Card Spend in September market, which priced Above 97 at 99% as of October 5, 2026, is scheduled to resolve October 7, 2026 [1]. Separately, the McDonald's September foot-traffic market, priced Above 100 at 66% and Above 96 at 99% as of October 2, is scheduled for resolution October 8, 2026 [2]. The next comparable prediction-market checkpoint is October 2026 card spend, scheduled to resolve November 7, 2026; as of October 2, the market priced Above 84 at 95% [3].
Q3 2026 earnings represent a significant financial catalyst, expected October 22, 2026, though one research calendar lists November 4 [4][5]. Consensus expectations for Q3 are $3.33 EPS and $7.1 billion revenue, with investor focus on whether value initiatives, the returned Snack Wrap, and September Extra Value Meals restored same-store sales momentum [6]. Management commentary prior to the September read indicated U.S. sales were slightly negative in July and August, expected September to turn positive, but still projected slightly negative U.S. comparable sales for Q3 overall [7][8]. The bullish case posits September card spend likely clears low thresholds, with value promotions and beverages improving traffic [9][10][8]. Conversely, the bearish case suggests September improvement may be insufficient to offset weak July/August for positive Q3 U.S. comparable sales, citing risks from lower-income consumer pressure and value competition [7][10][8].
Longer-term catalysts emerged from the September 23, 2026 McDonald's NEXT investor event. Targets included 1.5 percentage-point category-share gains in both chicken and beverages by 2030, roughly 250 basis points of restaurant-level efficiency gains, and approximately $8.5 billion of franchisee/partnering support through 2036 [11][12][13].

Key Dates & Catalysts

  • Expiration: October 14, 2026
  • Closes: October 07, 2026
Sources (13)
  1. 1McDonald's Credit Card Spend in September - Kalshi Odds | CoinRithmcoinrithm.com
  2. 2McDonald's Foot Traffic in September - Kalshi Odds | CoinRithmcoinrithm.com
  3. 3McDonald's Credit Card Spend in October - Kalshi Odds | CoinRithmcoinrithm.com
  4. 4McDonald's Corporation (MCD) — MCH Advisory Researchmchadvisoryservices.com
  5. 5McDonald's (MCD) Earnings Preview: Can the Golden Arches Regain U.S. Momentum?tickeron.com
  6. 6McDonald's Q3 Earnings Preview: What to Know Before the Bell (2026)peapac.org
  7. 7MCD Stock Heads For Worst Month Since Pandemicstocktwits.com
  8. 8McDonald's Corporation (MCD) stock analysis and forecast for 2026 - RoboForexroboforex.com
  9. 9McDonald's: 14,625 Stores, Sales Trends & Growth 2026iceflower.ai
  10. 10McDonald's (MCD): U.S. Execution Is the Key Catalyst | TickerSparktickerspark.ai
  11. 11Advan Websiteadvanresearch.com
  12. 12MCDONALDS CORP — Investor Presentation 2026financialfilings.com
  13. 13McDonald's (MCD) Transcript: Investor Day 2026stockanalysis.com