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Contract OI history

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Mar 19, 2027 EXPIRATION

GAP $21.00 Put

GAP270319P00021000

Latest saved OI152Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GAP $21.00 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. 152760 2026-10-02: 141 OI2026-10-05: 141 OI2026-10-06: 141 OI2026-10-07: 143 OI2026-10-08: 143 OI2026-10-09: 143 OI2026-10-13: 143 OI2026-10-14: 143 OI2026-10-15: 143 OI2026-10-16: 143 OI2026-10-21: 143 OI2026-10-23: 152 OI Oct 02, 2026Oct 23, 2026

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

GAP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing152+9
Oct 21, 20261430
Oct 16, 20261430
Oct 15, 20261430
Oct 14, 20261430
Oct 13, 20261430
Oct 09, 20261430
Oct 08, 20261430
Oct 07, 2026143+2
Oct 06, 20261410
Oct 05, 20261410
Oct 02, 2026141No prior observation