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Contract OI history

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Mar 19, 2027 EXPIRATION

T $21.00 Put

T270319P00021000

Latest saved OI838Oct 23, 2026
Last change+128vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $21.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 8384190 2026-10-02: 363 OI2026-10-05: 363 OI2026-10-06: 366 OI2026-10-07: 366 OI2026-10-08: 366 OI2026-10-09: 406 OI2026-10-14: 679 OI2026-10-15: 679 OI2026-10-16: 679 OI2026-10-21: 710 OI2026-10-23: 838 OI Oct 02, 2026Oct 23, 2026

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

T contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing838+128
Oct 21, 2026710+31
Oct 16, 20266790
Oct 15, 20266790
Oct 14, 2026679+273
Oct 09, 2026406+40
Oct 08, 20263660
Oct 07, 20263660
Oct 06, 2026366+3
Oct 05, 20263630
Oct 02, 2026363No prior observation