Wall Street’s New Gamble: Prediction Markets or Just a Fancy Guessing Game?

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Move over, tarot card readers-Wall Street’s prime brokers are now in the business of predicting the future. Or, you know, just betting on it.

Apparently, major prime brokers are giving their clients access to event-based bets on the prediction market platform Kalshi. Because nothing says “financial sophistication” like wagering on whether the Fed will raise rates or if Taylor Swift will release a new album by Christmas.

Wall Street’s Prime Brokers: From Stocks to Psychic Hotlines

According to Bloomberg, Clear Street-a prime broker that’s basically the cool kid in the hedge fund cafeteria-is gearing up to clear its first trade on Kalshi later this month. Their CEO, Ed Tilly, says they’ll roll it out more broadly in 2026. Because why predict the future when you can bet on it?

Meanwhile, Marex Group, a London-based broker, is also jumping on the bandwagon. Thomas Texier, their global clearing head, says big financial institutions are suddenly very interested in prediction markets. Shocking, I know. Who doesn’t want to gamble on whether Elon Musk will colonize Mars by 2030?

“Over the last few weeks, we’ve seen very large hedge funds coming to us and saying, ‘Can you give us access to these markets?’” Texier said. Translation: “Can we please bet on stuff we have no control over?”

This is a big deal because prime brokers are like the backbone of institutional trading. They’re the people who make sure your bets don’t turn into a financial dumpster fire. Their involvement means hedge funds can now gamble on event contracts without having to explain it to their moms.

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Prediction Markets: Where Everyone’s a Nostradamus

Just as prime brokers are getting in on the action, prediction markets are hitting record highs. According to Artemis, open interest reached $1.2 billion on a weekly basis. That’s a lot of money riding on whether the next iPhone will have a foldable screen.

Weekly spot volume has also grown nearly 15x over the past year. Because apparently, Gen Z isn’t just betting on meme stocks-they’re betting on everything. Thanks, student loan debt and avocado toast.

Prediction Market OI sets new weekly ATH at $1.2B

– Artemis (@artemis) March 11, 2026

Crypto firms like Coinbase, Gemini, and Crypto.com are also dipping their toes into the prediction pool. Because if you can bet on Bitcoin, why not bet on whether Bitcoin will still exist next year?

Asset managers are getting in on the fun too. Firms like Bitwise and Roundhill are filing to register ETFs tied to event contracts on the US elections. Because nothing says “democracy” like betting on who’ll win Iowa.

But not everyone’s thrilled about this. US lawmakers are already drafting bills to ban these “corrupt and destabilizing prediction markets.” Senator Chris Murphy is particularly worried about insiders exploiting non-public knowledge. Because apparently, betting on whether a senator will filibuster is a bridge too far.

Two Democratic lawmakers also want to ban contracts tied to war, assassination, terrorism, or an individual’s death. Because yes, betting on someone’s demise is a bit much, even for Wall Street.

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So, will prediction markets become a permanent fixture on Wall Street? Or will lawmakers shut them down faster than a failing tech startup? Only time-and a few well-placed bets-will tell. Stay tuned, folks. It’s gonna be a wild ride.

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2026-03-12 11:09