OITracker Cboe delayed data

Contract OI history

Back to QS

May 21, 2027 EXPIRATION

QS $4.00 Call

QS270521C00004000

Latest saved OI483Oct 23, 2026
Last change+32vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
QS $4.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4832410 2026-10-09: 311 OI2026-10-13: 315 OI2026-10-14: 315 OI2026-10-15: 355 OI2026-10-16: 406 OI2026-10-21: 451 OI2026-10-23: 483 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

QS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing483+32
Oct 21, 2026451+45
Oct 16, 2026406+51
Oct 15, 2026355+40
Oct 14, 20263150
Oct 13, 2026315+4
Oct 09, 2026311No prior observation