0:58 US · 11–17 Oct 2026
Six things that moved US market structure, 19–24 Oct 2026
The weekly roundup, in about a minute, of US equity market structure and prediction markets for 19–24 Oct 2026: Rule 611 tied to fee, tick-size review; 23x5 trading planned 6 Dec; 22 issuers object to tokenised stocks; Stock perps could start 2 Nov; CFTC proposes event contracts as swaps; Utah sues Kalshi; Polymarket sues Ohio.
In this episode
- Rule 611 tied to fee, tick-size review
- 23x5 trading planned 6 Dec
- 22 issuers object to tokenised stocks
- Stock perps could start 2 Nov
- CFTC proposes event contracts as swaps
- Utah sues Kalshi; Polymarket sues Ohio
Read the stories
- SEC's Selway ties any Rule 611 change to best-execution modernisation
- 23-hour US stock trading expected to start 6 December, subject to SEC approvals
- Utah sues Kalshi as midterm prediction markets top $1.4bn in volume
- CFTC formally proposes that event contracts count as swaps; comments due 18 November
- 22 issuers, including Microsoft, Alphabet and Goldman Sachs, object to OKX-ICE tokenised stock venue
- Single-stock perpetual futures filings from Kalshi, Coinbase, Bitnomial and Nadex await CFTC review
Sources
- sec.gov sec.gov/newsroom/speeches-statements/selway-remarks-market-structure-conference-101426
- sec.gov sec.gov/newsroom/press-releases/2026-54-sec-proposes-rescission-regulation-nms-rules-611-6
- nasdaq.com nasdaq.com/newsroom/nasdaq-explains-what-is-23-5-trading
- nyse.com nyse.com/publicdocs/nyse/NYSE_Extended_Hours_Trading_FAQ.pdf
- sec.gov sec.gov/files/2026_TM_Overnight_Trading_Roundtable_Memo_090926.pdf
- okx.com okx.com/cdn/assets/okfe/web3-activities/okxicetsv/notices/OKXICE_Tokenized_Securities_Venu
- sec.gov sec.gov/files/rules/exorders/2026/34-106402.pdf
- sec.gov sec.gov/files/rules/sro/kalshiex/2026/34-106422.pdf
- sec.gov sec.gov/comments/SR-KALSHIEX-2026-02/srkalshiex202602-1093919-3841506.pdf
- federalregister.gov federalregister.gov/documents/2026/10/19/2026-21377/further-definition-of-swap-inclusions
- cftc.gov cftc.gov/filings/documents/2026/orgdcmprophxorderins261022.pdf
- cftc.gov cftc.gov/filings/documents/2026/orgdcmludloworder261023.pdf
- attorneygeneral.utah.gov attorneygeneral.utah.gov/utah-sues-kalshi/
- storage.courtlistener.com storage.courtlistener.com/recap/gov.uscourts.ohsd.316878/gov.uscourts.ohsd.316878.1.0.pdf
News and information only, not investment advice. See our disclaimer.
Risk: Prediction markets carry risk. You can lose the money you stake, and these markets may be restricted or unlawful where you live.
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