OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SERV $30.00 Put

SERV280121P00030000

Latest saved OI613Oct 23, 2026
Last change-1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $30.00 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. 6893440 2026-10-09: 689 OI2026-10-13: 689 OI2026-10-14: 616 OI2026-10-16: 616 OI2026-10-20: 614 OI2026-10-23: 613 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, 2026Viewing613-1
Oct 20, 2026614-2
Oct 16, 20266160
Oct 14, 2026616-73
Oct 13, 20266890
Oct 09, 2026689No prior observation