Wall Street Banks Tighten Prediction Market Rules Amid Insider Trading Fears

Wall Street banks, including Goldman Sachs and Morgan Stanley, are restricting employee trading on prediction market platforms due to concerns over nonpublic information misuse. Goldman Sachs has banned employees from trading event contracts tied to the bank, covering financial markets, macroeconomic events, elections, and geopolitics. Morgan Stanley confirmed existing policies, while Bank of America is drafting new restrictions. Legislative actions, such as a Wisconsin bill targeting public officials betting on policy outcomes, highlight growing scrutiny. Polymarket seeks CFTC approval for margin trading via its affiliate, Coming Home GBA LLC. Kalshi hit a record $9.4 billion in June trading volume amid World Cup-driven activity. Polymarket reached $713 million in daily taker volume on June 20, per Dune Analytics. Zcash targets a July 28 launch for its Ironwood network upgrade.

Regulatory Clampdown on Prediction Markets

■Goldman Sachs prohibits employees from trading event contracts related to the bank.

■Morgan Stanley enforces existing policies on prediction market trading.

■Bank of America is developing new restrictions for staff.

■Polymarket awaits CFTC approval for margin trading expansion.

Prediction Markets' Impact on Traditional Finance

■Prediction markets gained traction amid events like the 2026 FIFA World Cup.

■Polymarket hit a record $713 million daily taker volume on June 20.

■Kalshi achieved $9.4 billion in June trading volume.

■Zcash's Ironwood upgrade aims to enhance on-chain privacy.

The regulatory tightening on prediction markets underscores the need for clearer frameworks in decentralized finance. Polymarket's margin trading ambitions face hurdles, but its on-chain perpetuals could disrupt traditional derivatives. This trend reflects institutional adoption's double-edged sword: increased legitimacy paired with compliance burdens.