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Contract OI history

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Jan 21, 2028 EXPIRATION

WDC $350.00 Put

WDC280121P00350000

Latest saved OI651Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $350.00 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. 6543270 2026-10-09: 618 OI2026-10-12: 618 OI2026-10-14: 648 OI2026-10-15: 648 OI2026-10-16: 654 OI2026-10-21: 651 OI2026-10-23: 651 OI Oct 09, 2026Oct 23, 2026

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

WDC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6510
Oct 21, 2026651-3
Oct 16, 2026654+6
Oct 15, 20266480
Oct 14, 2026648+30
Oct 12, 20266180
Oct 09, 2026618No prior observation