SEC opens comment period on joint swap definition with CFTC as event contract litigation spreads
The SEC opened a comment period on the SEC-CFTC swap definition on September 1, 2026. The agency also submitted custody rule amendments. Event contracts fall within the swap definition under the framework under review. The move comes as prediction markets litigation expands across multiple forums, including a new state-level proceeding. A separate legal analysis on August 28 examined exchange proposals to list event contracts structured as cash-settled, European-style binary options, exploring where securities and commodity derivatives oversight intersect.
The swap-definition comment period forces Kalshi, Polymarket, and MEMX to prepare for dual-agency oversight rather than a single CFTC track. If the SEC and CFTC adopt conflicting definitions, platforms will need separate registration paths for contracts that look identical to traders. The litigation expanding across state forums adds a third front: federal registration may no longer preempt state gambling law, as the Ninth Circuit just held against Kalshi in Nevada.
Platforms now face scattered compliance costs — CFTC rules, possible SEC rules, and geofence demands from state attorneys general. The first agency to issue a final definition will set the market structure others must fit into, but neither the SEC nor the CFTC has shown willingness to cede ground.