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Round Rock Advisors’s Costco COST Stock Holding History

Round Rock Advisors’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 		$278K Hold
297
– – 0.04% 285
2026
Q1 		$296K Sell
297
-41
-12% -$40K 0.05% 264
2025
Q4 		$291K Sell
338
-41
-11% -$37.2K 0.04% 270
2025
Q3 		$351K Buy
379
+42
+12% +$40.3K 0.06% 222
2025
Q2 		$334K Sell
337
-11
-3% -$10.9K 0.06% 170
2025
Q1 		$329K Sell
348
-175
-33% -$171K 0.06% 163
2024
Q4 		$479K Buy
523
+91
+21% +$84.4K 0.1% 129
2024
Q3 		$383K Buy
432
+122
+39% +$106K 0.09% 128
2024
Q2 		$263K Sell
310
-15
-5% -$11.7K 0.06% 154
2024
Q1 		$238K Buy
325
+20
+7% +$14.3K 0.06% 172
2023
Q4 		$202K Buy
+305
New +$181K 0.05% 177

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Round Rock Advisors's COST Position: Q2 2026 in Review

Round Rock Advisors held its Costco (COST) position steady in Q2 2026 at 297 shares worth $278K. The position accounts for 0.04% of the portfolio, ranked #285.

Round Rock Advisors first reported a position in COST in Q4 2023 and has held it in 11 quarters since. The position peaked at $479K in Q4 2024. 4,254 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Round Rock Advisors held 297 shares of Costco worth $278K as of Q2 2026.
  • Round Rock Advisors left its Costco share count unchanged in Q2 2026.
  • Costco made up 0.04% of Round Rock Advisors's portfolio in Q2 2026, its #285 holding.
  • Round Rock Advisors first reported a position in Costco in Q4 2023 and has held it in 11 quarters since.
  • Round Rock Advisors's Costco position peaked at $479K in Q4 2024.
  • 4,254 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Round Rock Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.