OITracker Cboe delayed data

Contract OI history

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Nov 13, 2026 EXPIRATION

SERV $8.50 Put

SERV261113P00008500

Latest saved OI543Oct 23, 2026
Last change-23vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $8.50 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. 5662830 2026-10-09: 538 OI2026-10-13: 513 OI2026-10-14: 537 OI2026-10-16: 534 OI2026-10-20: 566 OI2026-10-23: 543 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, 2026Viewing543-23
Oct 20, 2026566+32
Oct 16, 2026534-3
Oct 14, 2026537+24
Oct 13, 2026513-25
Oct 09, 2026538No prior observation