OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SERV $5.00 Put

SERV280121P00005000

Latest saved OI1,931Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $5.00 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. 1,9319650 2026-10-09: 1,927 OI2026-10-13: 1,927 OI2026-10-14: 1,927 OI2026-10-16: 1,931 OI2026-10-20: 1,931 OI2026-10-23: 1,931 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, 2026Viewing1,9310
Oct 20, 20261,9310
Oct 16, 20261,931+4
Oct 14, 20261,9270
Oct 13, 20261,9270
Oct 09, 20261,927No prior observation