Walleye Trading
COST icon

Walleye Trading’s Costco COST Stock Holding History

Walleye Trading’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
Q1 		$132M Buy
132,300
+36,400
+38% +$35.5M 0.22% 88
2025
Q4 		$82.7M Buy
95,900
+40,600
+73% +$36.8M 0.12% 175
2025
Q3 		$51.2M Sell
55,300
-3,000
-5% -$2.88M 0.08% 258
2025
Q2 		$57.7M Sell
58,300
-7,100
-11% -$7.06M 0.1% 184
2025
Q1 		$61.9M Sell
65,400
-10,700
-14% -$10.4M 0.14% 126
2024
Q4 		$69.7M Buy
76,100
+24,800
+48% +$23M 0.15% 125
2024
Q3 		$45.5M Sell
51,300
-12,500
-20% -$10.8M 0.1% 219
2024
Q2 		$54.2M Sell
63,800
-2,500
-4% -$1.95M 0.13% 145
2024
Q1 		$48.6M Sell
66,300
-15,400
-19% -$11M 0.1% 169
2023
Q4 		$53.9M Buy
81,700
+47,000
+135% +$27.9M 0.12% 143
2023
Q3 		$19.6M Buy
34,700
+1,400
+4% +$773K 0.05% 377
2023
Q2 		$17.9M Sell
33,300
-38,500
-54% -$19.5M 0.05% 336
2023
Q1 		$35.7M Sell
71,800
-4,700
-6% -$2.31M 0.08% 215
2022
Q4 		$34.9M Buy
76,500
+4,100
+6% +$2M 0.1% 211
2022
Q3 		$34.2M Buy
72,400
+16,300
+29% +$8.48M 0.1% 179
2022
Q2 		$26.9M Buy
56,100
+23,900
+74% +$12.1M 0.09% 229
2022
Q1 		$18.5M Buy
32,200
+11,200
+53% +$5.88M 0.06% 375
2021
Q4 		$11.9M Sell
21,000
-7,700
-27% -$3.94M 0.04% 506
2021
Q3 		$12.9M Buy
28,700
+11,600
+68% +$5.1M 0.05% 440
2021
Q2 		$6.77M Buy
17,100
+14,000
+452% +$5.29M 0.03% 636
2021
Q1 		$1.09M Sell
3,100
-24,000
-89% -$8.35M ﹤0.01% 1840
2020
Q4 		$10.2M Sell
27,100
-2,500
-8% -$934K 0.04% 385
2020
Q3 		$10.5M Sell
29,600
-4,500
-13% -$1.51M 0.06% 269
2020
Q2 		$10.3M Buy
34,100
+700
+2% +$213K 0.07% 262
2020
Q1 		$9.52M Buy
33,400
+22,000
+193% +$6.68M 0.07% 203
2019
Q4 		$3.35M Sell
11,400
-17,600
-61% -$5.23M 0.02% 835
2019
Q3 		$8.36M Sell
29,000
-10,400
-26% -$2.93M 0.07% 254
2019
Q2 		$10.4M Sell
39,400
-4,700
-11% -$1.17M 0.09% 185
2019
Q1 		$10.7M Sell
44,100
-17,100
-28% -$3.74M 0.08% 231
2018
Q4 		$12.5M Buy
61,200
+39,000
+176% +$8.71M 0.09% 176
2018
Q3 		$5.21M Sell
22,200
-1,700
-7% -$383K 0.03% 618
2018
Q2 		$5M Sell
23,900
-18,200
-43% -$3.6M 0.03% 606
2018
Q1 		$7.93M Buy
42,100
+11,700
+38% +$2.21M 0.05% 329
2017
Q4 		$5.66K Buy
30,400
+3,100
+11% +$535K 0.03% 603
2017
Q3 		$4.48K Sell
27,300
-12,300
-31% -$1.93M 0.02% 726
2017
Q2 		$6.33K Buy
39,600
+9,500
+32% +$1.64M 0.04% 456
2017
Q1 		$5.05K Buy
30,100
+14,400
+92% +$2.41M 0.04% 504
2016
Q4 		$2.51M Sell
15,700
-13,500
-46% -$2.06M 0.02% 819
2016
Q3 		$4.46M Sell
29,200
-96,200
-77% -$15.5M 0.03% 483
2016
Q2 		$19.7M Buy
125,400
+64,800
+107% +$9.81M 0.13% 80
2016
Q1 		$9.56M Buy
60,600
+31,700
+110% +$4.8M 0.08% 213
2015
Q4 		$4.67M Sell
28,900
-18,600
-39% -$2.94M 0.05% 390
2015
Q3 		$6.86M Buy
47,500
+10,600
+29% +$1.51M 0.06% 225
2015
Q2 		$4.99M Sell
36,900
-5,700
-13% -$819K 0.05% 326
2015
Q1 		$6.45M Buy
42,600
+19,500
+84% +$2.86M 0.06% 242
2014
Q4 		$3.27M Sell
23,100
-101,000
-81% -$13.7M 0.03% 459
2014
Q3 		$15.6M Buy
124,100
+85,700
+223% +$10.4M 0.18% 33
2014
Q2 		$4.43K Buy
38,400
+14,200
+59% +$1.63M 0.06% 160
2014
Q1 		$2.7K Sell
24,200
-7,400
-23% -$846K 0.04% 324
2013
Q4 		$3.76M Buy
31,600
+11,800
+60% +$1.41M 0.04% 384
2013
Q3 		$2.28M Buy
19,800
+2,600
+15% +$300K 0.02% 496
2013
Q2 		$1.9M Buy
+17,200
New +$1.88M 0.02% 598

Other funds holding COST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
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
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
DAM
Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Walleye Trading's COST Position: Q1 2026 in Review

Walleye Trading reduced its Costco (COST) stake by 79% in Q1 2026, selling an estimated $48.1M and leaving 12,866 shares worth $12.8M. The position accounts for 0.02% of the portfolio, ranked #676.

Walleye Trading first reported a position in COST in Q3 2013 and has held it in 33 quarters since. The position peaked at $53.7M in Q4 2025. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Walleye Trading held 12,866 shares of Costco worth $12.8M as of Q1 2026.
  • Walleye Trading sold 49,351 Costco shares in Q1 2026, an estimated $48.1M.
  • Costco made up 0.02% of Walleye Trading's portfolio in Q1 2026, its #676 holding.
  • Walleye Trading first reported a position in Costco in Q3 2013 and has held it in 33 quarters since.
  • Walleye Trading's Costco position peaked at $53.7M in Q4 2025.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Walleye Trading's 13F filing for Q1 2026, filed 11 May 2026.