The Prediction Markets

Who will testify in front of Congress in 2026?

Closes
Jan 1, 2027, in 2 months
Traded
$79K
Venues
Kalshi
Prices updated
just now
Share

What the markets expect

Mark Zuckerberg 18%

Next is James Donaldson at 16%. Only Kalshi lists this market, so there is no second price to compare.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue. Ages are as of when this page was built.

  • Kalshi
Mark Zuckerberg
18%
Kalshi 18%polled, 25s agoBest Yes 23¢ on Kalshi, $100 pays $435 (4.35x)
Kalshi
Contract
Mark Zuckerberg
Last price
18%
As of
Polled just now
Buy Yes
23¢
Sell Yes
16¢
$100 on Yes pays
$435 (4.35x)
Volume
$10K
Trade this on Kalshi
James Donaldson
16%
Kalshi 16%polled, 25s agoBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
James Donaldson
Last price
16%
As of
Polled just now
Buy Yes
24¢
Sell Yes
15¢
$100 on Yes pays
$417 (4.17x)
Volume
$542
Trade this on Kalshi
Sam Altman
15%
Kalshi 15%polled, 25s agoBest Yes 15¢ on Kalshi, $100 pays $667 (6.67x)
Kalshi
Contract
Sam Altman
Last price
15%
As of
Polled just now
Buy Yes
15¢
Sell Yes
12¢
$100 on Yes pays
$667 (6.67x)
Volume
$5K
Trade this on Kalshi
Shou Zi Chew
14%
Kalshi 14%polled, 25s agoBest Yes 14¢ on Kalshi, $100 pays $714 (7.14x)
Kalshi
Contract
Shou Zi Chew
Last price
14%
As of
Polled just now
Buy Yes
14¢
Sell Yes
7¢
$100 on Yes pays
$714 (7.14x)
Volume
$7K
Trade this on Kalshi
Taylor Swift
13%
Kalshi 13%polled, 25s agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Taylor Swift
Last price
13%
As of
Polled just now
Buy Yes
13¢
Sell Yes
4.5¢
$100 on Yes pays
$769 (7.69x)
Volume
$142
Trade this on Kalshi
Jerome Powell
12%
Kalshi 12%polled, 25s agoBest Yes 12¢ on Kalshi, $100 pays $833 (8.33x)
Kalshi
Contract
Jerome Powell
Last price
12%
As of
Polled just now
Buy Yes
12¢
Sell Yes
11¢
$100 on Yes pays
$833 (8.33x)
Volume
$11K
Trade this on Kalshi
Ghislaine Maxwell
8%
Kalshi 8%polled, 25s agoBest Yes 8¢ on Kalshi, $100 pays $1,250 (12.5x)
Kalshi
Contract
Ghislaine Maxwell
Last price
8%
As of
Polled just now
Buy Yes
8¢
Sell Yes
4.3¢
$100 on Yes pays
$1,250 (12.5x)
Volume
$36K
Trade this on Kalshi
Jon Stewart
6.3%
Kalshi 6.3%polled, 25s agoBest Yes 7.2¢ on Kalshi, $100 pays $1,389 (13.9x)
Kalshi
Contract
Jon Stewart
Last price
6.3%
As of
Polled just now
Buy Yes
7.2¢
Sell Yes
1.1¢
$100 on Yes pays
$1,389 (13.9x)
Volume
$358
Trade this on Kalshi
Jelly Roll
5.3%
Kalshi 5.3%polled, 25s agoBest Yes 6.9¢ on Kalshi, $100 pays $1,449 (14.5x)
Kalshi
Contract
Jelly Roll
Last price
5.3%
As of
Polled just now
Buy Yes
6.9¢
Sell Yes
5.3¢
$100 on Yes pays
$1,449 (14.5x)
Volume
$874
Trade this on Kalshi
Kamala Harris
4.5%
Kalshi 4.5%polled, 25s agoBest Yes 8.2¢ on Kalshi, $100 pays $1,220 (12.2x)
Kalshi
Contract
Kamala Harris
Last price
4.5%
As of
Polled just now
Buy Yes
8.2¢
Sell Yes
3.4¢
$100 on Yes pays
$1,220 (12.2x)
Volume
$236
Trade this on Kalshi
Show 3 more outcomes
Barack Obama
4.4%
Kalshi 4.4%polled, 25s agoBest Yes 8¢ on Kalshi, $100 pays $1,250 (12.5x)
Kalshi
Contract
Barack Obama
Last price
4.4%
As of
Polled just now
Buy Yes
8¢
Sell Yes
4.4¢
$100 on Yes pays
$1,250 (12.5x)
Volume
$1K
Trade this on Kalshi
Joe Biden
2.5%
Kalshi 2.5%polled, 25s agoBest Yes 9.9¢ on Kalshi, $100 pays $1,010 (10.1x)
Kalshi
Contract
Joe Biden
Last price
2.5%
As of
Polled just now
Buy Yes
9.9¢
Sell Yes
1.4¢
$100 on Yes pays
$1,010 (10.1x)
Volume
$324
Trade this on Kalshi
Anthony Fauci
2.1%
Kalshi 2.1%polled, 25s agoBest Yes 3.5¢ on Kalshi, $100 pays $2,857 (28.6x)
Kalshi
Contract
Anthony Fauci
Last price
2.1%
As of
Polled just now
Buy Yes
3.5¢
Sell Yes
2.1¢
$100 on Yes pays
$2,857 (28.6x)
Volume
$6K
Trade this on Kalshi

Who resolves this market

Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: C-SPAN, the New York Times, the Associated Press

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Mark Zuckerberg
  • James Donaldson
  • Sam Altman

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Kalshi

Open on Kalshi ↗

Top of book

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Best bid
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Best ask
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Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Buy

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Who will testify in front of Congress in 2026?". Mark Zuckerberg leads at 18%. Next is James Donaldson at 16%. $79K has traded across 13 outcomes on Kalshi. The market is expected to resolve by Jan 1, 2027.

Kalshi event status: open

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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