Costco stock rose about 2.55% in price between its October 13, 2025 close and its latest completed close as of October 13, 2026: October 12, 2026. That is a near-anniversary comparison, not a completed exact one-year return, and it excludes dividends.
Costco’s past-year price change
Costco Wholesale Corporation shares (NASDAQ: COST) closed at $935.56 on October 13, 2025, and at $959.44 on October 12, 2026, the latest completed U.S. market session at the October 13, 2026 measurement timestamp. The October 13, 2026 trading session had not yet begun, so the newer figure is not that day’s closing price.
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| Measure | Value |
|---|---|
| October 13, 2025 closing price | $935.56 |
| October 12, 2026 closing price | $959.44 |
| Change per share | $23.88 |
| Price change | Approximately 2.55% |
Calculation: ($959.44 − $935.56) ÷ $935.56 × 100 = approximately 2.55%. This is a price return based on unadjusted closing prices; it does not include cash dividends or dividend reinvestment.
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What the return does—and does not—measure
The 2.55% figure describes the change in Costco’s share price across the stated dates. It is not total shareholder return, which would account for dividends, and it is not an exact October 13-to-October 13 calendar-year comparison. The available figures do not establish a dividend-inclusive return or a benchmark return for the same dates.
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As of its October 12, 2026 quote update, Costco reported a 52-week high of $1,096.50 and a low of $844.06. The $959.44 close was within that range, rather than at its high. Those range figures provide price context; they do not explain the near-anniversary return.
Costco’s business results provide context, not a proven cause
Costco’s fiscal 2026 was a 52-week year ending August 30, 2026. In its September 24, 2026 earnings release, the company reported net sales of $297.2 billion, up 10.1%, and net income of $9.226 billion, or $20.76 per diluted share.
Total-company comparable sales grew 8.4% as reported. Adjusted for gasoline-price and foreign-exchange effects, comparable sales growth was 6.6%. These are different measures and should not be conflated. The reported operating results show business growth, but the figures alone do not establish that the results caused COST’s share-price movement over the period.
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Sources and calculation notes
- Costco Investor Relations stock information reported the October 12, 2026 close and 52-week range.
- Yahoo Finance historical prices lists the October 13, 2025 close. The percentage change is arithmetic calculated from the two displayed closes.
- Costco’s FY2026 earnings release filed with the SEC provides the annual financial and comparable-sales figures.
- Costco’s corporate overview describes the company’s business model.
Past share-price movement is historical information, not a forecast or a personalized investment recommendation.
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