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Postrock Partners’s Costco COST Stock Holding History

Postrock 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 		$971K Hold
1,038
– – 0.39% 37
2026
Q1 		$1.03M Hold
1,038
– – 0.48% 35
2025
Q4 		$895K Hold
1,038
– – 0.39% 39
2025
Q3 		$961K Hold
1,038
– – 0.42% 37
2025
Q2 		$1.03M Hold
1,038
– – 0.49% 37
2025
Q1 		$982K Hold
1,038
– – 0.49% 37
2024
Q4 		$951K Buy
+1,038
New +$963K 0.46% 39

Other funds holding COST

Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
EA
Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return
Ninety One (UK)
Ninety One (UK) London, United Kingdom $44.7B AUM 17.24% 1-Year Est. Return
Mirae Asset Global Investments
Mirae Asset Global Investments Seoul, South Korea $67.7B AUM 51.91% 1-Year Est. Return
RG
Rathbones Group Liverpool, United Kingdom $27.1B AUM 20.2% 1-Year Est. Return
SP
Sarasin & Partners London, United Kingdom $8.54B AUM 9.6% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return

Postrock Partners's COST Position: Q2 2026 in Review

Postrock Partners held its Costco (COST) position steady in Q2 2026 at 1,038 shares worth $971K. The position accounts for 0.39% of the portfolio, ranked #37.

Postrock Partners first reported a position in COST in Q4 2024 and has held it in 7 quarters since. The position peaked at $1.03M in Q1 2026. 1,443 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Postrock Partners held 1,038 shares of Costco worth $971K as of Q2 2026.
  • Postrock Partners left its Costco share count unchanged in Q2 2026.
  • Costco made up 0.39% of Postrock Partners's portfolio in Q2 2026, its #37 holding.
  • Postrock Partners first reported a position in Costco in Q4 2024 and has held it in 7 quarters since.
  • Postrock Partners's Costco position peaked at $1.03M in Q1 2026.
  • 1,443 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Postrock Partners's 13F filing for Q2 2026, filed 24 Jul 2026.