William Blair Investment Management’s Costco COST Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Shares Change % | Capital Flow | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $373M | Buy |
376,485
+22,906
| +6% | +$22.7M | 0.99% | 14 |
|
|
2025
Q1 | $334M | Buy |
353,579
+16,394
| +5% | +$15.5M | 0.94% | 17 |
|
|
2024
Q4 | $309M | Sell |
337,185
-4,680
| -1% | -$4.29M | 0.75% | 21 |
|
|
2024
Q3 | $303M | Sell |
341,865
-24,201
| -7% | -$21.5M | 0.75% | 24 |
|
|
2024
Q2 | $311M | Buy |
366,066
+9,662
| +3% | +$8.21M | 0.82% | 23 |
|
|
2024
Q1 | $261M | Sell |
356,404
-37,764
| -10% | -$27.7M | 0.67% | 35 |
|
|
2023
Q4 | $260M | Sell |
394,168
-43,333
| -10% | -$28.6M | 0.76% | 29 |
|
|
2023
Q3 | $247M | Buy |
437,501
+62,752
| +17% | +$35.5M | 0.82% | 26 |
|
|
2023
Q2 | $202M | Buy |
374,749
+13,246
| +4% | +$7.13M | 0.65% | 42 |
|
|
2023
Q1 | $180M | Sell |
361,503
-123,661
| -25% | -$61.4M | 0.63% | 44 |
|
|
2022
Q4 | $221M | Buy |
485,164
+22,970
| +5% | +$10.5M | 0.85% | 29 |
|
|
2022
Q3 | $218M | Buy |
462,194
+29,250
| +7% | +$13.8M | 0.86% | 29 |
|
|
2022
Q2 | $208M | Buy |
432,944
+94,454
| +28% | +$45.3M | 0.77% | 30 |
|
|
2022
Q1 | $195M | Buy |
338,490
+29,582
| +10% | +$17M | 0.58% | 58 |
|
|
2021
Q4 | $175M | Buy |
308,908
+94,552
| +44% | +$53.7M | 0.47% | 76 |
|
|
2021
Q3 | $96.3M | Sell |
214,356
-4,132
| -2% | -$1.86M | 0.27% | 108 |
|
|
2021
Q2 | $86.4M | Buy |
218,488
+2,938
| +1% | +$1.16M | 0.27% | 116 |
|
|
2021
Q1 | $76M | Buy |
215,550
+35,925
| +20% | +$12.7M | 0.25% | 117 |
|
|
2020
Q4 | $67.7M | Sell |
179,625
-49,385
| -22% | -$18.6M | 0.23% | 116 |
|
|
2020
Q3 | $81.3M | Buy |
229,010
+93,807
| +69% | +$33.3M | 0.32% | 101 |
|
|
2020
Q2 | $41M | Buy |
135,203
+10,588
| +8% | +$3.21M | 0.17% | 137 |
|
|
2020
Q1 | $35.5M | Sell |
124,615
-1,536
| -1% | -$438K | 0.17% | 131 |
|
|
2019
Q4 | $37.1M | Sell |
126,151
-9,031
| -7% | -$2.65M | 0.15% | 140 |
|
|
2019
Q3 | $38.9M | Sell |
135,182
-15,010
| -10% | -$4.32M | 0.17% | 131 |
|
|
2019
Q2 | $39.7M | Buy |
150,192
+22,517
| +18% | +$5.95M | 0.17% | 132 |
|
|
2019
Q1 | $30.9M | Buy |
127,675
+62,504
| +96% | +$15.1M | 0.13% | 145 |
|
|
2018
Q4 | $13.3M | Buy |
65,171
+2,016
| +3% | +$411K | 0.07% | 258 |
|
|
2018
Q3 | $14.8M | Sell |
63,155
-17,124
| -21% | -$4.02M | 0.05% | 303 |
|
|
2018
Q2 | $16.8M | Sell |
80,279
-3,712
| -4% | -$776K | 0.06% | 273 |
|
|
2018
Q1 | $15.8M | Sell |
83,991
-11,118
| -12% | -$2.09M | 0.06% | 274 |
|
|
2017
Q4 | $17.7M | Sell |
95,109
-326,485
| -77% | -$60.8M | 0.07% | 259 |
|
|
2017
Q3 | $69.3M | Buy |
421,594
+58,441
| +16% | +$9.6M | 0.25% | 124 |
|
|
2017
Q2 | $58.1M | Sell |
363,153
-109,039
| -23% | -$17.4M | 0.21% | 125 |
|
|
2017
Q1 | $79.2M | Sell |
472,192
-97,682
| -17% | -$16.4M | 0.3% | 107 |
|
|
2016
Q4 | $91.2M | Sell |
569,874
-42,055
| -7% | -$6.73M | 0.36% | 88 |
|
|
2016
Q3 | $93.3M | Buy |
611,929
+16,226
| +3% | +$2.47M | 0.35% | 87 |
|
|
2016
Q2 | $93.5M | Sell |
595,703
-169,088
| -22% | -$26.6M | 0.37% | 91 |
|
|
2016
Q1 | $121M | Buy |
764,791
+113,047
| +17% | +$17.8M | 0.48% | 79 |
|
|
2015
Q4 | $105M | Buy |
651,744
+31,927
| +5% | +$5.16M | 0.43% | 85 |
|
|
2015
Q3 | $89.6M | Buy |
+619,817
| New | +$89.6M | 0.18% | 158 |
|