OITracker Cboe delayed data

Contract OI history

Back to IONS

Jan 21, 2028 EXPIRATION

IONS $52.50 Put

IONS280121P00052500

Latest saved OI25Oct 19, 2026
Last change0vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IONS $52.50 put open interest history 5 saved observations from 2026-10-09 to 2026-10-19. Exact values and changes are listed in the table below. 25120 2026-10-09: 25 OI2026-10-13: 25 OI2026-10-14: 25 OI2026-10-16: 25 OI2026-10-19: 25 OI Oct 09, 2026Oct 19, 2026

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

IONS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 19, 2026Viewing250
Oct 16, 2026250
Oct 14, 2026250
Oct 13, 2026250
Oct 09, 202625No prior observation