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Contract OI history

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Jan 19, 2029 EXPIRATION

GERN $1000.00 Put

GERN290119P00001000

Latest saved OI27Oct 23, 2026
Last change+5vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
GERN $1000.00 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: 18 OI2026-10-09: 18 OI2026-10-13: 19 OI2026-10-14: 19 OI2026-10-16: 19 OI2026-10-20: 22 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.

GERN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing27+5
Oct 20, 202622+3
Oct 16, 2026190
Oct 14, 2026190
Oct 13, 202619+1
Oct 09, 2026180
Oct 08, 202618No prior observation