Silphium Asset Management’s Costco COST Stock Holding History

Silphium Asset Management’s Portfolio COST Stock Details COST Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.99M	Buy	2,128 +220	+12%	+$219K	0.67%	24
2026 Q1	$1.9M	Sell	1,908 -360	-16%	-$351K	0.72%	23
2025 Q4	$1.96M	Sell	2,268 -3,121	-58%	-$2.83M	0.83%	22
2025 Q3	$4.99M	Sell	5,389 -700	-11%	-$671K	1.48%	18
2025 Q2	$6.03M	Sell	6,089 -1,545	-20%	-$1.54M	2.15%	13
2025 Q1	$7.22M	Buy	7,634 +6	+0.1%	+$5.85K	5.82%	2
2024 Q4	$6.99M	Buy	7,628 +6	+0.1%	+$5.57K	2.3%	11
2024 Q3	$6.76M	Hold	7,622	–	–	2.41%	11
2024 Q2	$6.48M	Hold	7,622	–	–	3.08%	8
2024 Q1	$5.58M	Buy	7,622 +122	+2%	+$87.1K	2.82%	9
2023 Q4	$4.95M	Buy	7,500 +1,580	+27%	+$936K	2.64%	13
2023 Q3	$3.34M	Hold	5,920	–	–	1.07%	29
2023 Q2	$3.19M	Hold	5,920	–	–	1.38%	24
2023 Q1	$2.94M	Buy	5,920 +2,650	+81%	+$1.3M	2.26%	16
2022 Q4	$1.49M	Buy	+3,270	New	+$1.6M	1.49%	24

Other funds holding COST

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return

Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

Parnassus Investments San Francisco, California $37.4B AUM 35.42% 1-Year Est. Return

Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return

New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return

PTC

Provident Trust Company Waukesha, Wisconsin $4.77B AUM 29.31% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return

Commonwealth Equity Services Waltham, Massachusetts $79.5B AUM 27.1% 1-Year Est. Return

Silphium Asset Management's COST Position: Q2 2026 in Review

Silphium Asset Management increased its Costco (COST) stake by 12% in Q2 2026, buying an estimated $219K and bringing the position to 2,128 shares worth $1.99M. The position accounts for 0.67% of the portfolio, ranked #24.

Silphium Asset Management first reported a position in COST in Q4 2022 and has held it in 15 quarters since. The position peaked at $7.22M in Q1 2025. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Silphium Asset Management held 2,128 shares of Costco worth $1.99M as of Q2 2026.
Silphium Asset Management bought 220 Costco shares in Q2 2026, an estimated $219K.
Costco made up 0.67% of Silphium Asset Management's portfolio in Q2 2026, its #24 holding.
Silphium Asset Management first reported a position in Costco in Q4 2022 and has held it in 15 quarters since.
Silphium Asset Management's Costco position peaked at $7.22M in Q1 2025.
2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Silphium Asset Management's 13F filing for Q2 2026, filed 30 Jul 2026.