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Contract OI history

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Mar 19, 2027 EXPIRATION

MA $540.00 Put

MA270319P00540000

Latest saved OI440Oct 23, 2026
Last change+11vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $540.00 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. 4402200 2026-10-02: 426 OI2026-10-05: 433 OI2026-10-06: 436 OI2026-10-07: 438 OI2026-10-08: 438 OI2026-10-09: 427 OI2026-10-13: 428 OI2026-10-14: 428 OI2026-10-15: 429 OI2026-10-16: 429 OI2026-10-21: 429 OI2026-10-23: 440 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, 2026Viewing440+11
Oct 21, 20264290
Oct 16, 20264290
Oct 15, 2026429+1
Oct 14, 20264280
Oct 13, 2026428+1
Oct 09, 2026427-11
Oct 08, 20264380
Oct 07, 2026438+2
Oct 06, 2026436+3
Oct 05, 2026433+7
Oct 02, 2026426No prior observation