Kalshi launched stock perps after a judge declined to halt trading
The judge questioned the CFTC’s authority but found the challengers had not shown imminent harm. Two days later, Kalshi announced contracts on more than 50 stocks.
Kalshi announced perpetual futures on more than 50 stocks on November 5, two days after a federal judge refused to block the launch. Traders could take a long or short position in companies including Meta and McDonald’s without buying or borrowing their shares. The judge had serious doubts about the legal basis for those contracts.
| Stock price | Position gain or loss | As a share of $50 initial margin |
|---|---|---|
| $180 | −$20 | −40% |
| $200 | $0 | 0% |
| $220 | +$20 | +40% |
Why the judge let the launch go ahead
The Capital Markets Alliance Association asked a federal court in New York to suspend the Commodity Futures Trading Commission’s approvals for Kalshi and two other exchanges. The CFTC treats the contracts as security futures. Under that approach, an exchange registered with the CFTC also needs the appropriate Securities and Exchange Commission registration to list them.
Judge Valerie Caproni identified a problem with that reasoning on November 3: a security future calls for delivery on a future date. A stock perp has no expiry date. She concluded the alliance was likely to succeed on its argument that these contracts fell under the SEC’s rules for swaps and that the CFTC had exceeded its authority.
To win a temporary restraining order, the alliance also had to show that its members faced imminent harm. Its declarations described harms that might occur. Caproni found that evidence fell short. Her order denied emergency relief; it did not decide whether the CFTC would ultimately win the case.
How much stock exposure one contract buys
Kalshi sets each contract at the price exposure of 0.02 shares. For a stock trading at $200, one contract represents $4 of exposure; 50 contracts track one share. The trader gets no voting rights.
Suppose a trader buys 50 contracts and posts $50 in margin. A rise from $200 to $220 produces a $20 gain before fees and funding. A fall to $180 costs $20 on the same basis. Either move is 10% of the share price and 40% of the trader’s initial margin. The $50 is collateral, and the leverage available varies by market.
Kalshi calculates funding once a day at 4 p.m. Eastern. Depending on the rate, a trader can pay or receive it. The stock contracts also have scheduled closures. A trader who wants to reduce a position during a closure has to wait, even if the underlying share price moves in the meantime.