Tandem Investment Partners’s Costco COST Stock Holding History

Tandem Investment Partners’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	$645K	Sell	690 -71	-9%	-$70.7K	0.5%	41
2026 Q1	$758K	Sell	761 -90	-11%	-$87.7K	0.64%	37
2025 Q4	$734K	Sell	851 -139	-14%	-$126K	0.62%	37
2025 Q3	$916K	Buy	990 +11	+1%	+$10.5K	0.75%	35
2025 Q2	$969K	Buy	979 +113	+13%	+$112K	0.85%	32
2025 Q1	$819K	Sell	866 -88	-9%	-$85.8K	0.81%	32
2024 Q4	$874K	Buy	+954	New	+$885K	0.84%	27

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

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

New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return

Tandem Investment Partners's COST Position: Q2 2026 in Review

Tandem Investment Partners reduced its Costco (COST) stake by 9.3% in Q2 2026, selling an estimated $70.7K and leaving 690 shares worth $645K. The position accounts for 0.5% of the portfolio, ranked #41.

Tandem Investment Partners first reported a position in COST in Q4 2024 and has held it in 7 quarters since. The position peaked at $969K in Q2 2025. 1,984 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Tandem Investment Partners held 690 shares of Costco worth $645K as of Q2 2026.
Tandem Investment Partners sold 71 Costco shares in Q2 2026, an estimated $70.7K.
Costco made up 0.5% of Tandem Investment Partners's portfolio in Q2 2026, its #41 holding.
Tandem Investment Partners first reported a position in Costco in Q4 2024 and has held it in 7 quarters since.
Tandem Investment Partners's Costco position peaked at $969K in Q2 2025.
1,984 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Tandem Investment Partners's 13F filing for Q2 2026, filed 27 Jul 2026.