OITracker Cboe delayed data

Contract OI history

Back to FAST

Dec 18, 2026 EXPIRATION

FAST $50.00 Put

FAST261218P00050000

Latest saved OI495Oct 23, 2026
Last change+71vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
FAST $50.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4952470 2026-10-09: 412 OI2026-10-13: 440 OI2026-10-14: 440 OI2026-10-15: 440 OI2026-10-16: 413 OI2026-10-21: 424 OI2026-10-23: 495 OI Oct 09, 2026Oct 23, 2026

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

FAST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing495+71
Oct 21, 2026424+11
Oct 16, 2026413-27
Oct 15, 20264400
Oct 14, 20264400
Oct 13, 2026440+28
Oct 09, 2026412No prior observation