COSTCO WHOLESALE CORPORATION
CUSIP 22160K955
Costco Wholesale Corporation has 3 institutional holders in Filings Flow’s 13F database, together reporting 70.8K shares worth $20M as of Q1 2026. The largest reported holders are Imc-Chicago, LLC, Optiver Holding B.V., and Jpmorgan Chase & Co.
Institutional Holders
3
Q1 2026
Reported Value
$20M
Ticker
unmapped
private placement or foreign
Quarters Tracked
7
Ownership Trend
Institutional holders
Total reported value
Holders
Mixed quarters
| Manager | % of Portfolio | Value | Shares | Quarter |
|---|---|---|---|---|
| Gladius Capital Management LP$2.2B AUM | 0.64% | $14M | 14.5K | Q1 2026OLDER |
| Maven Securities LTD$5.2B AUM | 0.39% | $20M | 20.1K | Q1 2026OLDER |
| BlackDiamond Wealth Management, LLC$208M AUM | 0.38% | $797,144 | 800 | Q1 2026OLDER |
| IMC-Chicago, LLC$278.4B AUM | 0.30% | $830M | 832.7K | Q1 2026OLDER |
| Optiver Holding B.V.$289.5B AUM | 0.09% | $247M | 247.8K | Q2 2026 |
| NATIONAL BANK OF CANADA /FI/$111.5B AUM | 0.06% | $65M | 750 | Q4 2025OLDER |
| SIMPLEX TRADING, LLC$149.1B AUM | 0.05% | $71M | 71.7K | Q1 2026OLDER |
| GROUP ONE TRADING LLC$52.2B AUM | 0.04% | $19M | 19.5K | Q1 2026OLDER |
| Investors Portfolio Services LLC$108M AUM | 0.03% | $35,535 | 6 | Q1 2026OLDER |
| CIBC WORLD MARKETS CORP$20.8B AUM | 0.02% | $4M | 5.0K | Q4 2025OLDER |
| JPMORGAN CHASE & CO$1.56T AUM | 0.01% | $78M | 78.7K | Q1 2026OLDER |
| AlphaCore Capital LLC$4.2B AUM | 0.00% | $112,147 | 24 | Q4 2025OLDER |
| OSAIC HOLDINGS, INC.$68.3B AUM | 0.00% | $137,400 | 9 | Q1 2026OLDER |
Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.