OITracker Cboe delayed data

Contract OI history

Back to SERV

Jan 15, 2027 EXPIRATION

SERV $9.00 Put

SERV270115P00009000

Latest saved OI355Oct 23, 2026
Last change+10vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $9.00 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. 3551770 2026-10-09: 249 OI2026-10-13: 282 OI2026-10-14: 299 OI2026-10-16: 305 OI2026-10-20: 345 OI2026-10-23: 355 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, 2026Viewing355+10
Oct 20, 2026345+40
Oct 16, 2026305+6
Oct 14, 2026299+17
Oct 13, 2026282+33
Oct 09, 2026249No prior observation