Short Answer

Donald Trump is likely to meet with Mark Zuckerberg this month, with the market pricing this outcome at 97.0%.

1. Market Behavior & Drivers

This market's primary movement was driven by news of Donald Trump's planned meetings with AI executives. The contract repriced almost entirely on September 17, jumping 88 percentage points from 2.0% to 90.0% after reports emerged that Trump would host technology leaders for a dinner and a lunch before the end of the month. This single development established the market's baseline expectation that a meeting was highly probable.

Subsequent price action refined this high probability as specific details were confirmed. The climb to 97.0% on September 24 coincided with reporting that identified Anthropic CEO Dario Amodei as a guest at a private dinner on September 27 and listed other executives for a White House lunch on September 29. The price has since settled at 90.0%, reflecting the successful execution of these meetings. The initial price spikes on September 17 and 18 occurred on zero reported volume, indicating a swift repricing based on new information rather than a gradual shift in sentiment built on trading activity.

Mark Zuckerberg, Jensen Huang, Sundar Pichai are expected at the September 29 AI summit.
Dario Amodei is a confirmed participant for the September 29 White House meeting.
Elon Musk may have a private meeting, with elevated market probabilities reported.

Who Wins and Why

Outcome	Market	Model	Why
Jensen Huang	90.0%	93.7%	Jensen Huang leads a key company in AI hardware, vital for industry development.
Sundar Pichai	84.0%	88.7%	As CEO of Google, Sundar Pichai heads a major player in AI development.
Sam Altman	11.0%	8.5%	A meeting between Trump and Sam Altman may be less expected compared to other tech leaders.
Mark Zuckerberg	97.0%	97.5%	Mark Zuckerberg leads a major tech company, often drawing attention from policymakers.

Current Context

Donald Trump scheduled AI meetings with tech leaders, including a private dinner and a lunch. On September 27, 2026, Trump privately dined with Anthropic CEO Dario Amodei ^[1]^[2]. This preceded a broader AI executive lunch scheduled for September 29, 2026, at the White House, co-hosted by Trump and House Speaker Mike Johnson ^[3]^[4]^[5]. Expected attendees for the September 29 lunch included Dario Amodei (Anthropic), Mark Zuckerberg (Meta), Sundar Pichai (Alphabet/Google), Jensen Huang (Nvidia), Alex Karp (Palantir), and Greg Brockman (OpenAI President) ^[3]^[4]^[1]^[6]^[5]. OpenAI's listed attendee is its President, Greg Brockman, not CEO Sam Altman ^[3]^[4]^[5]. Elon Musk's attendance was less certain, with some reports omitting him from the confirmed list ^[5]^[7]. This series of meetings concluded before the October 1 prediction market deadline ^[3]^[4]^[5].

Meetings addressed AI policy while prediction markets indicated high confidence. The engagements occurred amidst rising congressional and public concern over frontier AI risks, prompting calls for safeguards and oversight ^[3]^[2]^[5]. House Speaker Johnson emphasized finding a balance between accelerating U.S. AI development to compete with China and implementing safety requirements, rather than imposing a moratorium ^[3]^[4]^[6]. Trump has publicly argued against stifling growth and stressed maintaining U.S. leadership ^[3]^[2]^[5]. Congress.gov records Executive Order 14409, signed June 2, 2026, directing federal agencies to collaborate with the private sector on AI security and innovation ^[8]^[9]. Immediately prior to the September 29 lunch, prediction market probabilities for meeting Trump by October 1 showed Jensen Huang at approximately 99%, Mark Zuckerberg at 99%, and Sundar Pichai at 94% ^[10]^[11]. No comparably strong price was cited for Dario Amodei, and Sam Altman's implied probability was 14% ^[10]^[11]. Prediction market signals for Trump-related events have not consistently demonstrated a reliable trading edge, rendering named-CEO forecasts speculative ^[12]^[13]. No verified live contract for the specific question of which AI CEOs Trump would meet by October 1, 2026, was retrieved ^[12].

Confirmed meetings with Amodei contrast with earlier federal directives. Despite the confirmed September 27 private dinner and expected September 29 lunch ^[1]^[2], Congress.gov states Trump ordered federal agencies to cease using Anthropic technology on February 27, 2026 ^[8]. This order followed a February 24 meeting involving Anthropic's CEO ^[8]^[14]. No September presidential meeting related to this February order was found in the cited chronology ^[8]^[14]. This suggests a potential disconnect between earlier federal directives concerning Anthropic and the recent direct engagements with its CEO.

Sources (14)

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: Sundar Pichai

📉 September 29, 2026: 10.0pp drop

Price decreased from 94.0% to 84.0%

What happened: The provided web research does not identify a clear primary driver for the 10.0 percentage point drop in the prediction market for Sundar Pichai on September 29, 2026. Sundar Pichai, CEO of Alphabet/Google, was widely expected to attend a White House AI meeting with Trump on that date, with reports from September 28, 2026, and earlier confirming his expected presence ^[1]^[2]^[3]. There is no information provided regarding any social media activity, new announcements, or other events on September 29, 2026, that would contradict these expectations or cause a decrease in his likelihood of attendance. Based on the available data, social media was irrelevant to this movement, and no specific catalyst can be identified.

📈 September 25, 2026: 36.0pp spike

Price increased from 62.0% to 98.0%

What happened: The primary driver for the 36.0 percentage point spike was traditional news reporting confirming Sundar Pichai's attendance at the Trump-Xi White House state dinner on September 24, 2026 ^[4]^[5]^[6]. News of Pichai's participation in this event, which occurred the day before the market spike, definitively indicated that he had met with Trump that month ^[7]. Traditional news outlets reported his presence alongside other tech executives at the state dinner ^[4]^[5]^[6]. Traditional news was the primary driver, leading the price movement, with no specific social media activity identified as a direct cause.

Outcome: Sam Altman

📉 September 28, 2026: 73.0pp drop

Price decreased from 87.0% to 14.0%

What happened: The primary driver for the 73.0 percentage point drop in the "Sam Altman" outcome on September 28, 2026, was widespread traditional news reporting confirming the attendees for Trump's September 29 White House AI meeting ^[1]^[8]^[9]^[10]^[11]. These reports, disseminated on or by September 28, consistently specified that OpenAI would be represented by President Greg Brockman, not CEO Sam Altman, for the upcoming high-profile discussions ^[1]^[8]^[9]^[10]^[11]^[12]. This direct information from major news outlets, indicating Altman's exclusion from the month's most prominent AI meeting, contradicted the prediction market outcome. Traditional news reporting was the primary driver.

Outcome: Mark Zuckerberg

📈 September 27, 2026: 38.0pp spike

Price increased from 42.0% to 80.0%

What happened: The 38.0 percentage point spike in "Mark Zuckerberg" for the "Which AI CEOs will Trump meet this month?" market on September 27, 2026, was primarily driven by an unconfirmed leak or early circulation of information. News outlets subsequently reported on September 28, 2026, that Zuckerberg was among the tech executives publicly reported to attend a White House AI lunch with President Trump on September 29, 2026, but this confirmation lagged the market movement ^[2]. No specific social media activity from key figures or viral narratives directly preceding or coinciding with the September 27 spike was identified in the provided sources. Thus, social media was not a primary driver based on the available evidence.

📉 September 26, 2026: 44.0pp drop

Price decreased from 86.0% to 42.0%

What happened: The primary driver of the 44.0 percentage point drop for Mark Zuckerberg on September 26, 2026, appears to be traditional news coverage reporting his stance against industry-wide AI coordination or a coordinated slowdown ^[2]^[13]^[14]^[15]. This coverage on September 26 followed his interview on September 24 where he "rejected the need for industry-wide AI coordination or a coordinated slowdown" ^[15]. This position, noted as part of the policy backdrop for an upcoming September 29 meeting with President Trump, likely introduced market uncertainty about his participation or the nature of the meeting ^[1]^[2]^[9]^[16]. While later reports confirmed Zuckerberg's expected attendance, the news of his divergent policy views coincided with the market drop ^[1]^[2]^[9]^[13]. Based on the provided sources, social media activity was not a primary driver for this price movement.

Sources (16)

4. Market Data

Contract Snapshot

The market addresses whether Donald Trump will meet specific AI CEOs, such as Jensen Huang, Sundar Pichai, or Sam Altman, "this month." A "YES" resolution occurs if such a meeting takes place, and a "NO" resolution occurs if it does not, though the precise definition of "meet" and the exact timeframe for "this month" are not detailed in the provided content. The market's maximum payout date is September 30, 2026, and no special settlement conditions are mentioned.

Available Contracts

Market options and current pricing

Outcome bucket	Yes (price)	No (price)	Last trade probability
Mark Zuckerberg	$0.97	$0.04	97%
Jensen Huang	$0.94	$0.10	90%
Sundar Pichai	$0.94	$0.15	84%
Sam Altman	$0.12	$0.89	11%

Market Discussion

Reports indicated that Trump was expected to meet with several AI executives, including Anthropic CEO Dario Amodei, Meta CEO Mark Zuckerberg, Google/Alphabet CEO Sundar Pichai, Nvidia CEO Jensen Huang, and OpenAI President Greg Brockman, at the White House on September 29, 2026 ^[1]^[2]^[3]^[4]^[5]. Palantir CEO Alex Karp was also expected to attend, with Elon Musk mentioned as a possibility ^[1]^[3]^[4]. Prediction market odds around September 27–28 reflected these expectations, showing high probabilities for Huang, Zuckerberg, and Pichai, while Sam Altman was priced significantly lower ^[6]^[7].

Sources (7)

5. Trust Index

How it adds up

Integrity80% of score83Good

Trade quality20% of score67Caution

Includes the cost to trade: a $10,000 order can't be filled here because the order book is too thin.

Trust score80Good

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 · 6 don't apply

6. What official statements from OpenAI or the White House clarify why President Greg Brockman, not CEO Sam Altman, is attending the September 29th meeting with Trump?

Attended Trump Meeting (Sept 29)	Greg Brockman ^[1]^[2]^[3]
Role at OpenAI (Sept 29)	President ^[4]^[5]^[6]
OpenAI CEO at Time	Sam Altman ^[4]

No official explanation clarifies why Greg Brockman attended the September 29 meeting. Neither OpenAI nor the White House has provided an official statement clarifying why President Greg Brockman, rather than CEO Sam Altman, was chosen to attend the September 29 meeting with President Trump ^[7]. Public reports, however, confirm that Greg Brockman was the attendee for the September 29, 2026 White House lunch, with company spokespeople reportedly confirming his presence ^[1]^[2]^[3]. Sam Altman continued to serve as OpenAI's CEO during this period ^[4].

Brockman's focus on AI security likely influenced his attendance. Although an official rationale was not provided, an unconfirmed inference suggests that Brockman represented OpenAI due to his president-level role and his public emphasis on AI security, infrastructure protection, and policy initiatives ^[4]^[5]^[6]^[8]. These initiatives include a global critical-infrastructure initiative and the 'defenders window' concept ^[4]^[6].

Altman's other engagements offered a potential reason for Brockman's presence. This inference is also supported by the fact that Sam Altman had other scheduled high-profile engagements around that time, notably a UN Security Council briefing ^[9]^[10].

Sources (10)

7. How does Elon Musk's recent public engagement with the Trump administration compare to Dario Amodei's leading up to the end of September 2026?

Musk's Public Engagement	Fireside chat with OSTP Director at G20 Innovation Ministerial (September 2, 2026) ^[1]
Musk's Financial Links	Trump's trading of SpaceX shares (July 2026) ^[2]
Amodei's Direct Meeting	No documented direct, in-person meeting with President Trump in September 2026 ^[3]

Elon Musk publicly engaged with the Trump administration in September 2026. He participated in a fireside chat with the Office of Science and Technology Policy (OSTP) Director at the G20 Innovation Ministerial on September 2, 2026 ^[3]^[1]. Financial ties also connected Musk to the administration, as indicated by former President Trump's trading of SpaceX shares in July 2026 ^[2]. Additionally, Musk's recent commendation of Chinese leadership coincided with President Trump's diplomatic efforts with China ^[4].

Dario Amodei's direct engagement with President Trump was not documented in September 2026. There is no documented record of a direct, in-person meeting between Amodei and President Trump during this period ^[3]. Amodei has consistently expressed a more critical and cautious perspective on AI development, advocating for robust risk-management frameworks and a measured pace of advancement. This contrasts significantly with President Trump's stance, who has dismissed AI-related concerns as exaggerated and has emphasized U.S. industry dominance without the imposition of restrictive federal regulations ^[5]. While President Trump reportedly met privately with other AI leaders, direct engagement with Amodei has not been documented ^[3]^[6]^[7]^[8].

Sources (8)

8. What last-minute events could cause confirmed attendees like Jensen Huang or Mark Zuckerberg to withdraw from the September 29th AI summit?

Meeting status	Reported as an expected gathering, not a fully confirmed White House event ^[1]^[2]^[3]^[4]
Jensen Huang's stance	Opposes guardrails that could stifle U.S. competitiveness ^[2]^[3]^[4]
Prediction market condition	Requires physical presence and purposeful interaction before October 1, 2026 ^[5]^[6]^[7]

Last-minute withdrawals could stem from scheduling conflicts or personal emergencies. Potential reasons for confirmed attendees like Jensen Huang or Mark Zuckerberg to withdraw from the September 29th AI summit include disruptions to their schedules or logistics. The White House meeting with AI executives was reported as an expected gathering rather than a fully confirmed White House event, which could lead to timing conflicts with other commitments, such as the launch of America.gov ^[1]^[2]^[3]^[4]. Additionally, personal emergencies involving travel, security, or health are plausible causes for short-notice absence, although no specific incidents for Zuckerberg or Huang were reported in the provided sources ^[1]^[8]^[4].

Policy disagreements present a plausible, though unconfirmed, reason for withdrawal. Given the summit's objective to balance AI innovation with government oversight, an executive might withdraw if they object to the meeting's format or policy framing ^[2]^[3]^[4]. For example, Jensen Huang is known to oppose guardrails that could hinder U.S. competitiveness, which aligns with former President Trump's stance against measures that might slow AI development ^[2]^[3]^[4]. As of the research date, no announced withdrawal has been found in the reviewed sources ^[3]^[4].

A last-minute absence impacts the prediction market's specific criteria. For the prediction market, a qualifying outcome necessitates that Trump and the named CEO are physically present and interact purposefully before October 1, 2026 ^[5]^[6]^[7]. Consequently, a last-minute absence would only be relevant if it prevents this required in-person interaction from occurring before the specified deadline ^[5]^[6]^[7].

Sources (8)

9. What is the standard release timeline for White House visitor logs, and will the records for September 27-30, 2026, become public before the market resolves?

Typical Visitor Log Release	Roughly 90 days after month-end ^[1]^[2]^[3]^[4]
January 2023 Records Release	April 30, 2023 (89 days after month-end) ^[1]^[2]
February 2022 Records Release	May 31, 2022 (89 days after month-end) ^[1]^[2]

White House visitor logs typically release after approximately 90 days. This release timeline demonstrates a consistent pattern across different administrations, with monthly records consistently showing a significant lag before public disclosure. For example, January 2023 visitor records were released on April 30, 2023, approximately 89 days after month-end ^[1]. Similarly, February 2022 records were posted on May 31, 2022, also about 89 days after month-end ^[2]. Historical data from the Obama White House supports this trend, with September 2016 records released in December 2016 and April 2013 records in July 2013 ^[3]^[4]^[5].

Records for September 2026 are unlikely to be public by October 2026. Given this consistent, roughly 90-day publication lag, White House visitor logs covering September 27-30, 2026, are highly unlikely to become publicly available before the market resolves on October 1, 2026 ^[1]^[2]^[3]^[4]. A normal release schedule would place the publication of late September 2026 records around late December 2026, which is well after the market's resolution deadline ^[6]^[1]^[2]^[3]^[4]. Therefore, these specific visitor records should not be relied upon for market settlement by October 1, 2026, and the market can instead resolve using contemporaneous official statements or credible reporting as per its stated rules ^[6]^[1]^[2].

Sources (6)

10. Besides the main summit, what indicators suggest a private meeting between Donald Trump and Elon Musk could occur before October 1?

Elon Musk Probability	62% on September 17, 2026 ^[1]
Jensen Huang Probability	99% by September 27 ^[2]^[3]
Meeting Resolution Deadline	October 1, 2026 ^[4]^[2]^[1]

Elevated market probabilities and flexible rules suggest a potential private Trump-Musk meeting. A Kalshi-tracking page reported Elon Musk at 62% on September 17, 2026, reflecting a meaningful market-implied probability for a qualifying interaction with Donald Trump before the October 1 deadline ^[1]. The market rules for resolution are broad, stipulating that any documented in-person interaction, not exclusively a formal summit, qualifies ^[4]^[2]. This means the market resolves positively if Trump and Musk are physically present, communicate or interact, and the encounter is documented by a credible source before October 1, 2026 ^[2]^[1].

Musk's probability, though significant, differs from others, highlighting specific indicators for his meeting. By September 27, Musk's 62% probability remained notably lower than Jensen Huang’s 99% ^[2]^[3]. This distinction suggests that the main summit primarily supports a meeting with Huang and does not automatically establish a private meeting for Musk ^[2]^[3]. Therefore, the strongest indicators for a private or separate Trump–Musk meeting are Musk’s elevated market probability, the compressed September 29–30 window leading up to the resolution deadline, and the market’s explicit allowance for any documented in-person interaction during this period, beyond just formal summit sessions ^[4]^[2].

Sources (4)

11. What Could Change the Odds

Key Catalysts

The principal catalyst for AI market movements is the White House AI meeting scheduled for Tuesday, September 29. Confirmed or expected participants include Anthropic CEO Dario Amodei, Meta CEO Mark Zuckerberg, Alphabet/Google CEO Sundar Pichai, Nvidia CEO Jensen Huang, Palantir CEO Alex Karp, and OpenAI President Greg Brockman ^[1]^[2]^[3]. Trump previously met Dario Amodei privately at a White House dinner on Sunday, September 27 ^[4]^[5]. The September 29 meeting is expected to address AI leadership, competition with China, safety guardrails and regulation, and the unveiling of a federal information portal ^[1]^[2]^[6].

Market outcomes depend on the policy signals from this meeting. A bullish scenario for AI equities would involve Trump emphasizing U.S. leadership and continued development rather than binding restrictions ^[1]^[7]^[6]. Conversely, a bearish scenario would arise from the meeting producing or signaling mandatory frontier-model safeguards, slower deployment, or other regulatory constraints ^[1]^[7]^[6]. Nate Silver's September polling reported broad public concern that AI is advancing too quickly and support for substantive regulation ^[8]. Prior to October 1, the Open-Source AI Leadership Act was introduced on August 27 and referred to committee, while Senate debate on September 16 highlighted concerns about AI regulation stifling innovation ^[9]^[10]. A Kalshi-linked market, which resolves for in-person meetings occurring before October 1, 2026, showed market-implied probabilities on September 28 at 23:05 UTC for Jensen Huang at 99%, Mark Zuckerberg at 99%, Sundar Pichai at 94%, and Sam Altman at 14% ^[11]^[12]. OpenAI President Greg Brockman was reported as attending the September 29 meeting, rather than CEO Sam Altman ^[13].

Key Dates & Catalysts

Expiration: October 07, 2026
Closes: October 01, 2026

Sources (13)

12. Keep Exploring

2026 Midterm Election Tracker Live odds for every Senate and Governor race, the balance of power, and an interactive state map. More Trump markets See more trump setups in the same theme. Browse all Politics markets Keep exploring adjacent politics markets. Track this in the app Open the live app flow and keep following this market in real time.

13. Historical Resolutions

Historical Resolutions: 2 markets in this series

Outcomes: 2 resolved YES, 0 resolved NO

Recent resolutions:

KXTRUMPAIMEET-26OCT01-EMUS: YES (Sep 25, 2026)
KXTRUMPAIMEET-26OCT01-DAMO: YES (Sep 28, 2026)

Which AI CEOs will Trump meet this month?

Short Answer

1. Market Behavior & Drivers

Who Wins and Why

Current Context

2. Price Chart

Historical Price (Probability)

3. Significant Price Movements

Outcome: Sundar Pichai

📉 September 29, 2026: 10.0pp drop

📈 September 25, 2026: 36.0pp spike

Outcome: Sam Altman

📉 September 28, 2026: 73.0pp drop

Outcome: Mark Zuckerberg

📈 September 27, 2026: 38.0pp spike

📉 September 26, 2026: 44.0pp drop

4. Market Data

Contract Snapshot

Available Contracts

Market options and current pricing

Market Discussion

5. Trust Index

6. What official statements from OpenAI or the White House clarify why President Greg Brockman, not CEO Sam Altman, is attending the September 29th meeting with Trump?

7. How does Elon Musk's recent public engagement with the Trump administration compare to Dario Amodei's leading up to the end of September 2026?

8. What last-minute events could cause confirmed attendees like Jensen Huang or Mark Zuckerberg to withdraw from the September 29th AI summit?

9. What is the standard release timeline for White House visitor logs, and will the records for September 27-30, 2026, become public before the market resolves?

10. Besides the main summit, what indicators suggest a private meeting between Donald Trump and Elon Musk could occur before October 1?

11. What Could Change the Odds

Key Catalysts

Key Dates & Catalysts

13. Historical Resolutions

Prediction Markets

Public Markets

Developers

Company

Short Answer

Who Wins and Why

Current Context

Historical Price (Probability)

Outcome: Sundar Pichai

📉 September 29, 2026: 10.0pp drop

📈 September 25, 2026: 36.0pp spike

Outcome: Sam Altman

📉 September 28, 2026: 73.0pp drop

Outcome: Mark Zuckerberg

📈 September 27, 2026: 38.0pp spike

📉 September 26, 2026: 44.0pp drop

Contract Snapshot

Available Contracts

Market options and current pricing

Market Discussion

Key Catalysts

Key Dates & Catalysts

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