No AI summary for this filing type
View Full Filing (SEC EDGAR)Costco Wholesale CORP
$928.48-1.2%
+$214.3B
Net Activity
+200.06% total shares
Institutions Holding
4249
Popularity Rank
#17
Avg Weight
0.63%
Total Value
$320.6B
Market Cap
$413.0B

4249 institutions currently hold COST, with 1896 net buyers and 1896 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
1896
Net Buying Institutions
1896
Top 5 by Value
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Across its top 20 institutional holders, COST's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 38/100).
COST ranks #17 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
4249 institutions disclose a position in COST, but none treat it as a major bet — even Acadian Asset Management LLC, its most concentrated holder, allocates just 1.3% of its own portfolio to it.
Invesco Ltd. has added to its COST position for two straight quarters, increasing it by $9.4B to reach $13.1B today.
Capital World Investors has trimmed its COST position for two straight quarters, cutting it by $1.5B while still holding $1.9B.
COST is down 1.2% today, but institutions show net buying of $214.3B this quarter — a divergence between today's price move and the underlying institutional flow.
COST posted net income of $8.8B over the trailing twelve months, and currently trades at a P/E of 46.7.
+$32.2B
Total Buy Value
$10.0B
Total Sell Value
1896
Net Buyers
1896
Net Sellers
COST
Q2 2026
Top 5 Institutional Movers
COST does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Adamo Claudine | 2026-03-09 | $732K |
| Sell | Jones Teresa A. | 2026-01-21 | $838K |
| Sell | DECKER SUSAN L | 2026-01-16 | $437K |
| Sell | Klauer James C | 2026-01-14 | $1.41M |
| Sell | Miller Russell D | 2026-01-09 | $1.37M |
| Sell | POLIT JAVIER | 2025-12-30 | $482K |
| Sell | POLIT JAVIER | 2025-12-29 | $1.78M |
| Sell | Wilcox William Richard | 2025-11-07 | $2.23M |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Buy | Alan Armstrong Senate | 2026-03-27 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2025-12-29 | $15K–$50K |
| Sell (Partial) | Shelley M Capito Senate | 2025-10-17 | $1K–$15K |
| Buy | John Boozman Senate | 2025-10-09 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2023-10-03 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2023-09-18 | $15K–$50K |
| Sell (Full) | Daniel S Sullivan Senate | 2023-08-22 | $1K–$15K |
| Sell (Full) | Daniel S Sullivan Senate | 2023-08-22 | $1K–$15K |
3
Filings (90d)
$2.82M
Total Est. Value
3K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| DENMAN KENNETH D | 2026-06-23 | $847K |
| Callans Patrick J | 2026-06-12 | $973K |
| Callans Patrick J | 2026-06-05 | $995K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
No AI summary for this filing type
View Full Filing (SEC EDGAR)22160K105, 22025Y407, 22160k105
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Access COST's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/COSTCLI
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