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Contract OI history

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Dec 18, 2026 EXPIRATION

STAA $17.50 Put

STAA261218P00017500

Latest saved OI394Oct 23, 2026
Last change0vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
STAA $17.50 put open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3991990 2026-10-08: 399 OI2026-10-09: 399 OI2026-10-13: 399 OI2026-10-14: 399 OI2026-10-15: 399 OI2026-10-16: 399 OI2026-10-20: 394 OI2026-10-23: 394 OI Oct 08, 2026Oct 23, 2026

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

STAA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3940
Oct 20, 2026394-5
Oct 16, 20263990
Oct 15, 20263990
Oct 14, 20263990
Oct 13, 20263990
Oct 09, 20263990
Oct 08, 2026399No prior observation