OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SERV $15.00 Put

SERV280121P00015000

Latest saved OI406Oct 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 $15.00 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. 4372180 2026-10-09: 407 OI2026-10-13: 437 OI2026-10-14: 420 OI2026-10-16: 421 OI2026-10-20: 406 OI2026-10-23: 406 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, 2026Viewing4060
Oct 20, 2026406-15
Oct 16, 2026421+1
Oct 14, 2026420-17
Oct 13, 2026437+30
Oct 09, 2026407No prior observation