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Contract OI history

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Jan 21, 2028 EXPIRATION

AUPH $20.00 Put

AUPH280121P00020000

Latest saved OI553Oct 20, 2026
Last change-1vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
AUPH $20.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 5542770 2026-10-08: 542 OI2026-10-09: 544 OI2026-10-13: 549 OI2026-10-14: 554 OI2026-10-16: 554 OI2026-10-20: 553 OI Oct 08, 2026Oct 20, 2026

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

AUPH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing553-1
Oct 16, 20265540
Oct 14, 2026554+5
Oct 13, 2026549+5
Oct 09, 2026544+2
Oct 08, 2026542No prior observation