Cboe Options Exchange plans to expand trading hours for select equity options
Effective July 13, 2026, Cboe Options Exchange (C1) plans to expand trading hours for select equity options.
C1
Cboe Options Exchanges to allow appointed Market Makers on contra side of single-leg AIM and SAM for all classes
C1 and EDGX Options Exchange will permit appointed market makers in a class to participate as the paired contra side order to a single-leg AIM or SAM auction order in that class.
Cboe launches two complementary datasets for complete visibility into options trading activity on C1
Cboe launched two complementary datasets for complete visibility into options trading activity on the Cboe Options Exchange (C1).
Cboe Options Exchange to update Quoted Spread Book Box Strikes
Effective February 2, 2026, Cboe Options Exchange (C1) will update exchange designated spreads comprising Quoted Spread Book Box Spreads and Box Swaps.
Cboe Options Exchange to allow trading of RUT Index Options during Global Trading Hours
Effective trade date February 9, 2026, Cboe Options Exchange (C1) will allow trading of RUT Index Options during Global Trading Hours (GTH).
Cboe confirms C1 sporadic gapping issue resolved
Cboe has confirmed that the C1 sporadic gapping issue has been resolved.
Cboe Options to allow new type of complex FLEX order
Effective trade date June 23, 2025, Cboe Options Exchange (C1) will allow a new type of complex FLEX order.
Cboe Options and EDGX Options to allow stock to print outside NBBO
Cboe Options and EDGX Options Exchanges will allow the equity leg on all stock-option orders to be executed outside the equity NBBO.
Cboe Options Exchange to extend Global Trading Hours session
Effective trade date August 26, 2024, Cboe Options Exchange (C1) will extend the Global Trading Hours (GTH) trading session.
Cboe Options to list MSCI ACWI, MSCI USA, and MSCI World Index options
Cboe Options Exchange (C1) will list MSCI ACWI, MSCI USA, and MSCI World Index options having a standard contract deliverable multiplier of 100.
1 2
