Options trading hours
Most equity option contracts trade Monday–Friday (excluding holidays), 9:30 AM–4 PM ET (or 1 PM ET for half-days), when the market session closes for the day.
However, there are some underlying assets you can trade options on until 4:15 PM ET (these assets are determined by options exchanges).
Index options also trade until 4:15 PM ET. And index options on SPX, VIX, XSP, and RUT can now be traded from 8:15 PM to 9:25 AM ET and 9:30 AM to 5 PM ET, Sunday-Friday (excluding some holidays), except on expiration dates.
Because we’ll likely add more indexes in the future, you can check this app link for what can currently be traded during extended or overnight trading hours. Review Trading hours for details.
For equity options, if you have expiration date trading enabled, you’ll have until 3:30 PM ET to open positions in same-day expiring contracts. We'll attempt to close out any expiring, at-risk positions starting at 3:30 PM ET (3:45 PM ET for late-close options). This standard closeout process doesn’t apply for index options.
Check out the full list of underlying assets whose option contracts are eligible to trade Monday-Friday until 4:15 PM ET.
Generally the UK time is 5 hours ahead of Eastern Time (ET). However, between the second Sunday in March and the last Sunday in March, it is 4 hours and between the last Sunday of October and the first Sunday in November.