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Contract OI history

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May 21, 2027 EXPIRATION

PDSB $500.00 Put

PDSB270521P00000500

Latest saved OI641Oct 23, 2026
Last change+10vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PDSB $500.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6413200 2026-10-09: 521 OI2026-10-13: 521 OI2026-10-14: 521 OI2026-10-16: 521 OI2026-10-20: 631 OI2026-10-23: 641 OI Oct 09, 2026Oct 23, 2026

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

PDSB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing641+10
Oct 20, 2026631+110
Oct 16, 20265210
Oct 14, 20265210
Oct 13, 20265210
Oct 09, 2026521No prior observation