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BLAIR WILLIAM & CO/IL

Position in COST — Costco Wholesale Corp /New

CIK 902367 CHICAGO, IL

Position in COST

as of Mar 31, 2026 · filed May 8, 2026
Position Value
$519,416,041
+$69,979,956 QoQ
Shares Held
521,277
+0.0% QoQ
Ownership
0.118%
of shares outstanding
% of Portfolio
1.80%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 77.97374913194112.ToString("F0")% Shared 0.ToString("F0")% None 22.026250868058884.ToString("F0")%

Common Shares in COST Over Time

Shares Held

Position Value (USD)

Position in Discount Stores

Consumer Defensive · as of Mar 31, 2026

BLAIR WILLIAM & CO/IL holds $839,419,467 across 6 Discount Stores names. COST ranks #1 (61.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 COST
Costco Wholesale Corp /New
This page
521,277 $519,416,041

All Filings in COST

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $519,416,041 521,277
2025-12-31 $449,436,085 521,182
2025-09-30 $510,538,631 551,558
2025-06-30 $546,433,020 551,986
2025-03-31 $519,137,696 548,899
2024-12-31 $538,818,071 588,056
2024-09-30 $521,679,786 588,458
2024-06-30 $483,349,363 568,653
2024-03-31 $417,425,466 569,763
2023-12-31 $378,612,646 573,586
2023-09-30 $317,974,741 562,827
2023-06-30 $298,951,108 555,279
2023-03-31 $248,112,034 499,350
2022-12-31 $216,520,689 474,306
2022-09-30 $222,354,633 470,821
2022-06-30 $219,860,114 458,730
2022-03-31 $258,090,787 448,191
2021-12-31 $252,065,612 444,012
2021-09-30 $199,030,146 442,929
2021-06-30 $176,138,831 445,166
2021-03-31 $151,839,219 430,774
2020-12-31 $146,693,641 389,335
2020-09-30 $136,511,700 384,540
2020-06-30 $105,223,572 347,032
2020-03-31 $96,306,649 337,764