Tannin Capital’s Costco COST Stock Holding History

Tannin Capital’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	$503K	Sell	538 -63	-10%	-$62.8K	0.33%	83
2026 Q1	$599K	Buy	601 +58	+11%	+$56.5K	0.43%	65
2025 Q4	$468K	Buy	+543	New	+$492K	0.42%	68

Other funds holding COST

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Tannin Capital's COST Position: Q2 2026 in Review

Tannin Capital reduced its Costco (COST) stake by 10% in Q2 2026, selling an estimated $62.8K and leaving 538 shares worth $503K. The position accounts for 0.33% of the portfolio, ranked #83.

Tannin Capital first reported a position in COST in Q4 2025 and has held it in 3 quarters since. The position peaked at $599K in Q1 2026. 4,230 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Tannin Capital held 538 shares of Costco worth $503K as of Q2 2026.
Tannin Capital sold 63 Costco shares in Q2 2026, an estimated $62.8K.
Costco made up 0.33% of Tannin Capital's portfolio in Q2 2026, its #83 holding.
Tannin Capital first reported a position in Costco in Q4 2025 and has held it in 3 quarters since.
Tannin Capital's Costco position peaked at $599K in Q1 2026.
4,230 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Tannin Capital's 13F filing for Q2 2026, filed 4 Aug 2026.