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Contract OI history

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Mar 19, 2027 EXPIRATION

M $20.00 Put

M270319P00020000

Latest saved OI172Oct 23, 2026
Last change+17vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $20.00 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. 172860 2026-10-02: 169 OI2026-10-05: 169 OI2026-10-06: 169 OI2026-10-07: 152 OI2026-10-08: 152 OI2026-10-09: 152 OI2026-10-13: 152 OI2026-10-14: 152 OI2026-10-15: 152 OI2026-10-16: 154 OI2026-10-21: 155 OI2026-10-23: 172 OI Oct 02, 2026Oct 23, 2026

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

M contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing172+17
Oct 21, 2026155+1
Oct 16, 2026154+2
Oct 15, 20261520
Oct 14, 20261520
Oct 13, 20261520
Oct 09, 20261520
Oct 08, 20261520
Oct 07, 2026152-17
Oct 06, 20261690
Oct 05, 20261690
Oct 02, 2026169No prior observation