COST Bias Score history

Every Bias Score published on Costco Wholesale Corporation over the last twelve months, in the order it was produced. Nothing is left out and nothing is behind a login. The record runs 3 trading days behind the market, which is the same delay every public page on this site runs, so a reading reaches this table three trading days after it was made.

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122 readings, 22 Apr 2026 to 19 Oct 2026.

A Bias Score carries no expiry. It stands until the next daily run replaces it, which is what the last column records. Closing price is the close on the date the reading was made, so the two can be read against each other. Timestamps marked approximate come from rows written before the production time was recorded separately, and are derived from when the row was last written.