Who will testify in front of Congress in 2026?

Kalshi Politics › Congress Closes Jan 1, 2027 · $14 today · $7.6K traded · $1.6K at stake · prices read 3 h ago

The odds

17%James Donaldson

James Donaldson17%
Mark Zuckerberg17%▼ 1
Sam Altman11%
Jerome Powell11%
Shou Zi Chew9%
Taylor Swift7%▼ 1
Ghislaine Maxwell6%
Jelly Roll5%
Joe Biden5%
Kamala Harris5%
Jon Stewart4%
Barack Obama3%▼ 2

1 more

Anthony Fauci2%

How the odds have moved

James Donaldson: 16% on Oct 20, 17% now.

Each outcome's chance over time on Kalshi. The dots along the bottom are headlines about its subject: point at one to read it.

Every outcome

Outcome	Chance	Day	Bid	Ask	Pays	Contracts
James Donaldson	17%		16¢	24¢	$4.17	542
Mark Zuckerberg	17%	▼ 1	15¢	23¢	$4.35	10.5K
Sam Altman	11%		11¢	13¢	$7.69	5.0K
Jerome Powell	11%		11¢	12¢	$8.33	11.4K
Shou Zi Chew	9%		6¢	14¢	$7.14	7.2K
Taylor Swift	7%	▼ 1	4¢	12¢	$8.33	153
Ghislaine Maxwell	6%		5¢	10¢	$10.53	35.5K
Jelly Roll	5%		5¢	7¢	$14.49	874
Joe Biden	5%		2¢	10¢	$10.20	324
Kamala Harris	5%		3¢	7¢	$14.29	236
Jon Stewart	4%		1¢	7¢	$13.89	358
Barack Obama	3%	▼ 2	3¢	4¢	$23.81	1.3K
Anthony Fauci	2%		2¢	2¢	$43.48	5.7K

"Pays" is what a $1 stake returns if that outcome happens, at the price shown (before any fees). Bid and ask are the best prices to sell and buy "Yes".

The news: James Donaldson, Mark Zuckerberg, Sam Altman

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Sam Altman’s OpenAI eyes $30B fundraising round ahead of looming IPO: reportNew York Post · 2 days agoSam Altman’s OpenAI is reportedly wrapping up a fundraising round that would value the company well above $1 trillion as it mulls when to go public. The ChatGPT maker is raising up to $30 billion at a $1.25 trillion valuation, CNBC…
Texas sues OpenAI, Sam Altman over product safetyPOLITICO · 2 days agoThe state’s attorney general in court documents alleges OpenAI falsely marketed ChatGPT as safe and that it has harmed Texans, including children. 10/23/2026 4:39 PM EDT Texas Attorney General Ken Paxton on Friday launched a lawsuit…
How Mark Zuckerberg went to war with his own board of directors over pay and powerThe Washington Post · 3 days agoThe Washington Post The tech billionaire wanted to lock in his absolute power over Meta even if he sold off stock, according to a filing released by the company. Its directors said no. Mark Zuckerberg went to war over power and money with…
Meta strikes deal to stop Mark Zuckerberg leaving California over billionaire taxBBC News · 3 days agoMeta chief executive Mark Zuckerberg Meta has agreed a deal with Mark Zuckerberg to stop the Facebook co-founder from leaving California after he threatened to move from the state because of a proposed tax on billionaires. The agreement…
Mark Zuckerberg threatened to leave California over proposed billionaire tax, Meta saysCBS News · 3 days agoOctober 22, 2026 / 10:28 AM EDT / CBS News Meta CEO Mark Zuckerberg threatened to move out of California if residents of the state approve a first-of-its-kind billionaire wealth tax when voters head to the polls on Nov. 3, the company said…
Meta agrees to let Mark Zuckerberg remain in California amid proposed billionaire wealth taxFox Business · 4 days agoA proposed California wealth tax faces backlash as Stanford economists warn it could backfire and lead to long-term revenue losses. David Asman highlights constitutional issues as early voting begins. Mark Zuckerberg has reached an…
Is Anthropic Facing an Employee Exodus? OpenAI's Sam Altman Says 'This Is Not a Good Sign'International Business Times · 16 h agoAnthropic is facing fresh scrutiny over employee departures after two builders closely associated with Claude Code, Thariq Shihipar and Anthony Morris, announced their exits within a day of each other. Shihipar, who spent more than a year…
Mark Zuckerberg moves to counter California’s billionaire taxThe Washington Post · 4 days agoCalifornia voters will decide next month whether roughly 250 billionaires in the state must pay a one-time tax on their riches. And the ballot proposal is already having ripple effects among California’s wealthiest people — including Mark…
Elon Musk takes dig at Mark Zuckerberg, says, “….opposite of an escape artist is”Lokmat Times · 15 h agoLos Angeles [US], August 16 : Mark Zuckerberg's decision to not fight Elon Musk seems to have made the latter dub the CEO of Meta an "escape artist". In an unexpected turn of events, Mark Zuckerberg has announced his intention to leave…
Mark Zuckerberg's creative plan to pay California’s proposed billionaire tax without losing control of MetaTechCrunch · 3 days agoBuy One Founder Summit Ticket, Get a Second for Free. Register now. Now, however, the New York Times has reported there’s another reason for the new class: helping Zuckerberg pay for California’s proposed “billionaire tax,” if voters…
Mark Zuckerberg threatened to dump $110M California home over billionaire tax, Meta reveals in filingCalifornia Post · 4 days agoHe’s not Zucking around. Meta CEO Mark Zuckerberg held detailed negotiations with the tech giant’s board of directors about moving out of California if the state passes Prop. 40, a 5% wealth tax on billionaires — which could force him to…
How the Cambridge Analytica scandal still haunts Mark ZuckerbergRT International · 2 days ago‘Cambridge Analytica’ is by now a byword for the social media Wild West of 2016, when regulations were non-existent and unscrupulous brokers sold personal user data to advertisers and political operatives. RT explores the scandal that Meta…

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Odds are traders' prices on Kalshi, Polymarket, ForecastEx and Crypto.com, not forecasts by 4Conservative. Prices read from the venues 4 min ago. Prices may be delayed. Money traded on Kalshi and ForecastEx is estimated from contracts. Not betting or investment advice.

About this market

VenueKalshi

Settles onC-SPAN, the New York Times, the Associated Press

Trading closesJan 1, 2027 10:00 AM ET

Traded$7.6K (79,047 contracts)

Today$14

At stake$1.6K

In the news4 headlines today, 98 this week

Followed here sinceOct 19, 2026

The rules

If Sam Altman has testified in front of Congress after Issuance and before Jan 1, 2027, the market resolves to Yes.

The full rules are on the market's page at Kalshi.

Reading the odds

A prediction market trades contracts that pay $1 if something happens. Its price is the market's chance: a contract at 62¢ means traders give it 62%. Each number here is the midpoint between the best bid and offer, or the last trade when they are more than ten cents apart.

For a question with many answers (who wins, which range a number lands in), the chances are scaled to add up to 100%. A price ladder ("above 4.25%, above 4.50% ...") gives a whole distribution: its median is where traders see an even chance either way.

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Prediction-market prices are what traders pay for each outcome on Kalshi, Polymarket, ForecastEx and Crypto.com, read as the market's implied chance. They are not forecasts by 4Conservative, can move fast and can be wrong; they are read every few minutes and may be delayed. Money traded on Kalshi and ForecastEx is estimated from contracts at their price. News comes from the 4Conservative index; prices of stocks, rates and coins from 4Conservative Finance. Nothing here is betting, financial or investment advice. Terms of use. How to use Predictions