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Contract OI history

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Feb 19, 2027 EXPIRATION

ASPN $5.00 Put

ASPN270219P00005000

Latest saved OI500Oct 20, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ASPN $5.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 1,0115050 2026-10-02: 1,011 OI2026-10-05: 1,011 OI2026-10-06: 1,011 OI2026-10-07: 500 OI2026-10-08: 500 OI2026-10-09: 500 OI2026-10-13: 500 OI2026-10-14: 500 OI2026-10-16: 500 OI2026-10-20: 500 OI Oct 02, 2026Oct 20, 2026

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

ASPN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing5000
Oct 16, 20265000
Oct 14, 20265000
Oct 13, 20265000
Oct 09, 20265000
Oct 08, 20265000
Oct 07, 2026500-511
Oct 06, 20261,0110
Oct 05, 20261,0110
Oct 02, 20261,011No prior observation