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Contract OI history

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Nov 20, 2026 EXPIRATION

SRTA $2.50 Put

SRTA261120P00002500

Latest saved OI1,731Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
SRTA $2.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 1,7318650 2026-10-08: 1,726 OI2026-10-09: 1,726 OI2026-10-13: 1,726 OI2026-10-14: 1,726 OI2026-10-16: 1,726 OI2026-10-20: 1,731 OI2026-10-23: 1,731 OI Oct 08, 2026Oct 23, 2026

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

SRTA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,7310
Oct 20, 20261,731+5
Oct 16, 20261,7260
Oct 14, 20261,7260
Oct 13, 20261,7260
Oct 09, 20261,7260
Oct 08, 20261,726No prior observation