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Contract OI history

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Jan 21, 2028 EXPIRATION

WDC $390.00 Put

WDC280121P00390000

Latest saved OI237Oct 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 $390.00 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. 2371180 2026-10-09: 184 OI2026-10-12: 216 OI2026-10-14: 225 OI2026-10-15: 225 OI2026-10-16: 236 OI2026-10-21: 237 OI2026-10-23: 237 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, 2026Viewing2370
Oct 21, 2026237+1
Oct 16, 2026236+11
Oct 15, 20262250
Oct 14, 2026225+9
Oct 12, 2026216+32
Oct 09, 2026184No prior observation