Why Open Interest Updates Only Once a Day
Open interest updates once a day, after overnight clearing. See why the OI column you read at noon is yesterday's number, and what volume shows instead.
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Open interest updates once a day, after overnight clearing. See why the OI column you read at noon is yesterday's number, and what volume shows instead.
If an option expires in the money by at least $0.01, the OCC exercises it automatically. See what the long and short sides owe, and what pin risk costs.