More than 180,000 contracts traded across Cboe C1 and NYSE American in the first week of expanded equity-options hours, according to Cboe’s 26 October analysis. The figures cover 19–23 October, following the 19 October launch, rather than Cboe volume alone.[1]
About 93% of the extended-session volume occurred in the 7:30am–9:25am US Eastern window. That session covered options on 24 single stocks and five ETFs. The post-close curb session covered single-stock options only, making the morning and curb totals different product samples as well as different times of day.[1][2]
ETF activity concentrated the opening-week total
Options on SPY, QQQ and IWM accounted for 79% of the volume in Cboe’s review. The session split therefore reflects the availability and popularity of ETF contracts as well as demand to trade before the opening bell. It cannot be read as a like-for-like measure of customers’ preference for morning over afternoon trading.[1]
Cboe’s reported C1 market shares
| Sample | C1 share |
|---|---|
| Morning session volume | 63%Source 1 |
| Curb session volume | 91%Source 1 |
| SPY options in the review | About 71%: more than 55,000 of 77,314 contracts.Source 1 |
The smaller curb session produced the higher C1 share, while the much larger morning sample drew substantial ETF trading. Neither percentage establishes the spread or fill available to an individual order. Cboe’s report is a venue-produced account of initial activity, not an independent execution-quality study.[1]
Cboe also expected more brokers to connect over the following weeks. The first-week figures give firms an early picture of staffing and order-flow demand, while customer access continues to depend on each broker’s implementation.[1][2]
Sources & further reading
- GTH Week One: Volume Builds, and Cboe Leads on Market Share Cboe · 26 Oct 2026 · Accessed 30 Oct 2026
- C1 Options to offer expanded trading hours for select equity options Cboe · Accessed 30 Oct 2026