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Contract OI history

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Sep 17, 2027 EXPIRATION

O $55.00 Put

O270917P00055000

Latest saved OI470Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $55.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4702350 2026-10-02: 256 OI2026-10-05: 256 OI2026-10-06: 257 OI2026-10-07: 257 OI2026-10-08: 257 OI2026-10-09: 257 OI2026-10-13: 257 OI2026-10-14: 262 OI2026-10-15: 262 OI2026-10-16: 262 OI2026-10-21: 466 OI2026-10-23: 470 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing470+4
Oct 21, 2026466+204
Oct 16, 20262620
Oct 15, 20262620
Oct 14, 2026262+5
Oct 13, 20262570
Oct 09, 20262570
Oct 08, 20262570
Oct 07, 20262570
Oct 06, 2026257+1
Oct 05, 20262560
Oct 02, 2026256No prior observation