OITracker Cboe delayed data

Contract OI history

Back to ASPN

Jan 21, 2028 EXPIRATION

ASPN $5.00 Put

ASPN280121P00005000

Latest saved OI521Oct 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. 5212600 2026-10-02: 521 OI2026-10-05: 521 OI2026-10-06: 521 OI2026-10-07: 521 OI2026-10-08: 521 OI2026-10-09: 521 OI2026-10-13: 521 OI2026-10-14: 521 OI2026-10-16: 521 OI2026-10-20: 521 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, 2026Viewing5210
Oct 16, 20265210
Oct 14, 20265210
Oct 13, 20265210
Oct 09, 20265210
Oct 08, 20265210
Oct 07, 20265210
Oct 06, 20265210
Oct 05, 20265210
Oct 02, 2026521No prior observation