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Contract OI history

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Dec 18, 2026 EXPIRATION

MA $505.00 Put

MA261218P00505000

Latest saved OI13Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $505.00 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. 1570 2026-10-02: 9 OI2026-10-05: 12 OI2026-10-06: 14 OI2026-10-07: 15 OI2026-10-08: 15 OI2026-10-09: 14 OI2026-10-13: 14 OI2026-10-14: 14 OI2026-10-15: 13 OI2026-10-16: 13 OI2026-10-21: 13 OI2026-10-23: 13 OI Oct 02, 2026Oct 23, 2026

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

MA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing130
Oct 21, 2026130
Oct 16, 2026130
Oct 15, 202613-1
Oct 14, 2026140
Oct 13, 2026140
Oct 09, 202614-1
Oct 08, 2026150
Oct 07, 202615+1
Oct 06, 202614+2
Oct 05, 202612+3
Oct 02, 20269No prior observation