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Contract OI history

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Jan 21, 2028 EXPIRATION

GERN $1000.00 Put

GERN280121P00001000

Latest saved OI171Oct 23, 2026
Last change+11vs 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. 171850 2026-10-08: 130 OI2026-10-09: 130 OI2026-10-13: 140 OI2026-10-14: 140 OI2026-10-16: 141 OI2026-10-20: 160 OI2026-10-23: 171 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, 2026Viewing171+11
Oct 20, 2026160+19
Oct 16, 2026141+1
Oct 14, 20261400
Oct 13, 2026140+10
Oct 09, 20261300
Oct 08, 2026130No prior observation