OITracker Cboe delayed data

Contract OI history

Back to S

Jan 21, 2028 EXPIRATION

S $27.00 Put

S280121P00027000

Latest saved OI5,004Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $27.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5,0042,5020 2026-10-02: 5,002 OI2026-10-05: 5,002 OI2026-10-06: 5,002 OI2026-10-07: 5,002 OI2026-10-08: 5,002 OI2026-10-09: 5,003 OI2026-10-13: 5,003 OI2026-10-14: 5,003 OI2026-10-15: 5,003 OI2026-10-16: 5,003 OI2026-10-21: 5,004 OI2026-10-23: 5,004 OI Oct 02, 2026Oct 23, 2026

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

S contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,0040
Oct 21, 20265,004+1
Oct 16, 20265,0030
Oct 15, 20265,0030
Oct 14, 20265,0030
Oct 13, 20265,0030
Oct 09, 20265,003+1
Oct 08, 20265,0020
Oct 07, 20265,0020
Oct 06, 20265,0020
Oct 05, 20265,0020
Oct 02, 20265,002No prior observation