OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SERV $3.00 Put

SERV280121P00003000

Latest saved OI295Oct 23, 2026
Last change+9vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $3.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2951470 2026-10-09: 294 OI2026-10-13: 291 OI2026-10-14: 293 OI2026-10-16: 286 OI2026-10-20: 286 OI2026-10-23: 295 OI Oct 09, 2026Oct 23, 2026

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

SERV contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing295+9
Oct 20, 20262860
Oct 16, 2026286-7
Oct 14, 2026293+2
Oct 13, 2026291-3
Oct 09, 2026294No prior observation