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Olympiad Research’s Costco COST Stock Holding History

Olympiad Research’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
2025
Q3 		– Sell
-403
Closed -$399K – 229
2025
Q2 		$399K Buy
403
+177
+78% +$176K 0.65% 26
2025
Q1 		$214K Buy
+226
New +$220K 0.25% 175
2022
Q3 		$1.41M Sell
2,994
-80
-3% -$41.6K 0.76% 39
2022
Q2 		$1.47M Buy
3,074
+334
+12% +$169K 0.66% 48
2022
Q1 		$1.58M Sell
2,740
-90
-3% -$47.2K 0.48% 60
2021
Q4 		$1.61M Buy
2,830
+970
+52% +$497K 0.58% 55
2021
Q3 		$836K Buy
1,860
+3
+0.2% +$1.32K 0.26% 117
2021
Q2 		$735K Buy
1,857
+73
+4% +$27.6K 0.26% 110
2021
Q1 		$629K Sell
1,784
-135
-7% -$47K 0.27% 94
2020
Q4 		$723K Buy
1,919
+1,126
+142% +$421K 0.42% 47
2020
Q3 		$282K Buy
793
+96
+14% +$32.3K 0.14% 178
2020
Q2 		$211K Buy
+697
New +$212K 0.15% 202

Other funds holding COST

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return

Olympiad Research's COST Position: Q3 2025 in Review

Olympiad Research sold out of Costco (COST) in Q3 2025, closing a stake of 403 shares — an estimated $399K sold.

Olympiad Research first reported a position in COST in Q2 2020 and held it in 12 quarters. The position peaked at $1.61M in Q4 2021. 3,932 funds tracked by Wall St. Rank hold COST as of Q3 2025.

  • Olympiad Research reported no remaining Costco position as of Q3 2025 after selling out during the quarter.
  • Olympiad Research sold 403 Costco shares in Q3 2025, an estimated $399K.
  • Olympiad Research first reported a position in Costco in Q2 2020 and held it in 12 quarters.
  • Olympiad Research's Costco position peaked at $1.61M in Q4 2021.
  • 3,932 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on Olympiad Research's 13F filing for Q3 2025, filed 30 Oct 2025.