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COSTCOST
Showing 8 of 31 quarters

Position history for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCWILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's holdings in COSTCO WHOLESALE CORPORATION

Yes. William Blair Investment Management holds 199,355 shares of COST (Costco Wholesale), worth $186.5M, as of its Q2 2026 13F filing. It reduced the position by 103,113 shares (-34.1%) from Q1 2026. William Blair Investment Management has held COST in every 13F on record since Q4 2018, 31 quarterly filings. COST is 0.6% of William Blair Investment Management's reported 13F portfolio.

Current Value

$186.5M

Current Shares

199,355

Total Value Change

-$116.6M

Total Shares Change

-142,510

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Decreased
199,355
-34.1%
$186.5M0.6%$933.99
0
2026-Q1
Decreased
302,468
-7.9%
$301.4M1.0%$993.41
0
2025-Q4
Increased
328,468
+1.8%
$283.3M0.8%$858.55
44
2025-Q3
Decreased
322,740
-14.3%
$298.7M0.8%$920.26
0
2025-Q2
Increased
376,485
+6.5%
$372.7M1.0%$982.84
47
2025-Q1
Increased
353,579
+4.9%
$334.4M0.9%$937.77
46
2024-Q4
Decreased
337,185
-1.4%
$309M0.8%$907.51
0
2024-Q3
Decreased
341,865
-6.6%
$303.1M0.7%$876.88
0

Other major holders of COST: VANGUARD GROUP INC

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