After 1 day
-3.91%$995.20 → $956.32
May 28, 2026 → May 29, 2026
Costco Wholesale Corp
/ COSTNMS$951.58+1.77%
Yahoo Finance ↗·Updated 07/28/2026, 08:09 AM UTC
- Current price
- $951.58
- Market cap
- $422.01B
- Latest earnings date
- May 28, 2026
- Data status
- Current
Yahoo Finance
Polygon.io
Nasdaq
Price change after earnings
After 7 days
-2.30%$995.20 → $972.35
May 28, 2026 → Jun 04, 2026
After 30 days
-4.88%$995.20 → $946.68
May 28, 2026 → Jun 29, 2026
Before-market or after-market timing is unavailable.
Reported date confirmed
Recent insider transactions
| Date | Trader / role | Type | Shares | Average price | Transaction value | Source |
|---|---|---|---|---|---|---|
| Jun 23, 2026 | DENMAN KENNETH D 이사 | Sold | 885 | $957.45 | $847.35K | SEC ↗ |
| Apr 01, 2026 | Frates Caton Executive Vice President | Sold | 700 | $993.00 | $695.1K | SEC ↗ |
DENMAN KENNETH DSold
이사
885 · $957.45 · $847.35K
Jun 23, 2026SEC Form 4 ↗
Frates CatonSold
Executive Vice President
700 · $993.00 · $695.1K
Apr 01, 2026SEC Form 4 ↗
Updated: 07/07/2026, 06:26 PM UTC
13F institutional changes
| Quarter | Institution | Type | Shares held | Share change | Value change | Source |
|---|---|---|---|---|---|---|
| Mar 31, 2026 | BlackRock, Inc. | Unchanged | 34,947,040 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Vanguard Capital Management LLC | New position | 28,847,448 | +28,847,448 | +$28.74B | SEC 13F ↗ |
| Mar 31, 2026 | State Street Corp | Unchanged | 18,152,232 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Vanguard Portfolio Management LLC | Sold out | 10,705,635 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Geode Capital Management, LLC | Added | 10,659,224 | +270,117 | +$268.01M | SEC 13F ↗ |
| Mar 31, 2026 | Morgan Stanley | Added | 9,898,711 | +371,559 | +$370.23M | SEC 13F ↗ |
| Mar 31, 2026 | Bank of America Corp. | Added | 7,515,031 | +775,093 | +$772.33M | SEC 13F ↗ |
| Mar 31, 2026 | FMR LLC / Fidelity | Unchanged | 6,718,589 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Norges Bank | Sold out | 6,024,787 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Northern Trust Corp | Unchanged | 4,928,107 | — | — | SEC 13F ↗ |
| Mar 31, 2026 | Susquehanna International Group, LLP | Reduced | 4,395,841 | -1,974,943 | -$1.97B | SEC 13F ↗ |
| Mar 31, 2026 | Invesco Ltd. | Unchanged | 4,313,506 | — | — | SEC 13F ↗ |
BlackRock, Inc.Unchanged
- Quarter
- Mar 31, 2026
- Shares held
- 34,947,040
- Share change
- —
- Value change
- —
Vanguard Capital Management LLCNew position
- Quarter
- Mar 31, 2026
- Shares held
- 28,847,448
- Share change
- +28,847,448
- Value change
- +$28.74B
State Street CorpUnchanged
- Quarter
- Mar 31, 2026
- Shares held
- 18,152,232
- Share change
- —
- Value change
- —
- Quarter
- Mar 31, 2026
- Shares held
- 10,705,635
- Share change
- —
- Value change
- —
- Quarter
- Mar 31, 2026
- Shares held
- 10,659,224
- Share change
- +270,117
- Value change
- +$268.01M
Morgan StanleyAdded
- Quarter
- Mar 31, 2026
- Shares held
- 9,898,711
- Share change
- +371,559
- Value change
- +$370.23M
- Quarter
- Mar 31, 2026
- Shares held
- 7,515,031
- Share change
- +775,093
- Value change
- +$772.33M
FMR LLC / FidelityUnchanged
- Quarter
- Mar 31, 2026
- Shares held
- 6,718,589
- Share change
- —
- Value change
- —
Norges BankSold out
- Quarter
- Mar 31, 2026
- Shares held
- 6,024,787
- Share change
- —
- Value change
- —
Northern Trust CorpUnchanged
- Quarter
- Mar 31, 2026
- Shares held
- 4,928,107
- Share change
- —
- Value change
- —
- Quarter
- Mar 31, 2026
- Shares held
- 4,395,841
- Share change
- -1,974,943
- Value change
- -$1.97B
Invesco Ltd.Unchanged
- Quarter
- Mar 31, 2026
- Shares held
- 4,313,506
- Share change
- —
- Value change
- —
Share counts are derived from reported value divided by the filing price and are rounded for display.
Key people timeline
Unavailable
Related data
Data sources and methodology
Prices use Yahoo Finance, earnings dates use Nasdaq, and company reference data prefers Polygon.io. When Polygon market cap is unavailable, the page derives it from the latest SEC shares outstanding multiplied by the Yahoo price. Insider and institutional records link to SEC EDGAR, and missing values are never invented.
Updated: 07/28/2026, 08:09 AM UTC
- Yahoo Finance
- 07/28/2026, 08:09 AM UTC
- Polygon.io
- 07/28/2026, 08:06 AM UTC
- Nasdaq earnings history
- 06/03/2026, 08:43 PM UTC
- SEC Form 4
- 07/07/2026, 06:26 PM UTC
- SEC 13F
- 06/09/2026, 02:33 PM UTC
- Statements / public records
- Unavailable