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Contract OI history

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Dec 18, 2026 EXPIRATION

EXTR $19.00 Put

EXTR261218P00019000

Latest saved OI27Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
EXTR $19.00 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. 27130 2026-10-08: 6 OI2026-10-09: 6 OI2026-10-13: 6 OI2026-10-14: 21 OI2026-10-16: 21 OI2026-10-20: 27 OI2026-10-23: 27 OI Oct 08, 2026Oct 23, 2026

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

EXTR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing270
Oct 20, 202627+6
Oct 16, 2026210
Oct 14, 202621+15
Oct 13, 202660
Oct 09, 202660
Oct 08, 20266No prior observation