William Blair & Company’s Blackrock BLK Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $57M | Sell |
59,288
-7,312
| -11% | -$7.69M | 0.16% | 130 |
|
|
2025
Q4 | $71.3M | Sell |
66,600
-3,410
| -5% | -$3.73M | 0.19% | 120 |
|
|
2025
Q3 | $81.6M | Buy |
70,010
+528
| +0.8% | +$590K | 0.22% | 106 |
|
|
2025
Q2 | $72.9M | Buy |
69,482
+3,674
| +6% | +$3.47M | 0.2% | 112 |
|
|
2025
Q1 | $62.3M | Buy |
65,808
+13,185
| +25% | +$12.9M | 0.19% | 120 |
|
|
2024
Q4 | $53.9M | Buy |
+52,623
| New | +$53.4M | 0.16% | 128 |
|
|
2024
Q3 | – | Sell |
-53,332
| Closed | -$42M | – | 1830 |
|
|
2024
Q2 | $42M | Buy |
53,332
+5,730
| +12% | +$4.47M | 0.13% | 134 |
|
|
2024
Q1 | $39.7M | Buy |
47,602
+148
| +0.3% | +$119K | 0.12% | 141 |
|
|
2023
Q4 | $38.5M | Sell |
47,454
-16,423
| -26% | -$11.5M | 0.13% | 141 |
|
|
2023
Q3 | $41.3M | Sell |
63,877
-544
| -0.8% | -$380K | 0.16% | 127 |
|
|
2023
Q2 | $44.5M | Sell |
64,421
-2,778
| -4% | -$1.86M | 0.16% | 126 |
|
|
2023
Q1 | $45M | Buy |
67,199
+167
| +0.2% | +$118K | 0.18% | 120 |
|
|
2022
Q4 | $47.5M | Sell |
67,032
-7,978
| -11% | -$5.33M | 0.21% | 110 |
|
|
2022
Q3 | $41.3M | Buy |
75,010
+5,375
| +8% | +$3.52M | 0.19% | 117 |
|
|
2022
Q2 | $42.4M | Sell |
69,635
-1,218
| -2% | -$793K | 0.19% | 119 |
|
|
2022
Q1 | $54.1M | Buy |
70,853
+473
| +0.7% | +$370K | 0.19% | 116 |
|
|
2021
Q4 | $64.4M | Buy |
70,380
+572
| +0.8% | +$522K | 0.2% | 113 |
|
|
2021
Q3 | $58.5M | Buy |
69,808
+1,616
| +2% | +$1.45M | 0.2% | 117 |
|
|
2021
Q2 | $59.7M | Sell |
68,192
-86
| -0.1% | -$72.6K | 0.21% | 112 |
|
|
2021
Q1 | $51.5M | Buy |
68,278
+3,463
| +5% | +$2.51M | 0.19% | 121 |
|
|
2020
Q4 | $46.8M | Buy |
64,815
+2,087
| +3% | +$1.38M | 0.17% | 127 |
|
|
2020
Q3 | $35.4M | Buy |
62,728
+2,247
| +4% | +$1.28M | 0.15% | 138 |
|
|
2020
Q2 | $32.9M | Sell |
60,481
-273
| -0.4% | -$138K | 0.16% | 132 |
|
|
2020
Q1 | $26.7M | Buy |
60,754
+1,986
| +3% | +$979K | 0.17% | 130 |
|
|
2019
Q4 | $29.5M | Buy |
58,768
+19,235
| +49% | +$9.13M | 0.15% | 145 |
|
|
2019
Q3 | $17.6M | Buy |
39,533
+74
| +0.2% | +$33K | 0.1% | 188 |
|
|
2019
Q2 | $18.5M | Buy |
39,459
+636
| +2% | +$288K | 0.11% | 179 |
|
|
2019
Q1 | $16.6M | Sell |
38,823
-6,162
| -14% | -$2.59M | 0.1% | 189 |
|
|
2018
Q4 | $17.7M | Sell |
44,985
-13,769
| -23% | -$5.64M | 0.13% | 164 |
|
|
2018
Q3 | $27.7M | Sell |
58,754
-12,881
| -18% | -$6.26M | 0.17% | 132 |
|
|
2018
Q2 | $35.7M | Buy |
71,635
+511
| +0.7% | +$270K | 0.24% | 103 |
|
|
2018
Q1 | $38.5M | Buy |
71,124
+310
| +0.4% | +$170K | 0.27% | 92 |
|
|
2017
Q4 | $36.4M | Buy |
70,814
+1,369
| +2% | +$665K | 0.25% | 104 |
|
|
2017
Q3 | $31M | Sell |
69,445
-109
| -0.2% | -$46.5K | 0.23% | 109 |
|
|
2017
Q2 | $29.4M | Buy |
69,554
+1,940
| +3% | +$774K | 0.22% | 113 |
|
|
2017
Q1 | $26.2M | Sell |
67,614
-1,114
| -2% | -$426K | 0.21% | 124 |
|
|
2016
Q4 | $26.2M | Sell |
68,728
-1,212
| -2% | -$444K | 0.23% | 113 |
|
|
2016
Q3 | $25.4M | Buy |
69,940
+2,357
| +3% | +$858K | 0.22% | 111 |
|
|
2016
Q2 | $23.1M | Sell |
67,583
-1,426
| -2% | -$501K | 0.22% | 122 |
|
|
2016
Q1 | $23.5M | Sell |
69,009
-1,906
| -3% | -$604K | 0.22% | 121 |
|
|
2015
Q4 | $24.1M | Buy |
70,915
+3,570
| +5% | +$1.21M | 0.23% | 117 |
|
|
2015
Q3 | $20M | Sell |
67,345
-8,319
| -11% | -$2.68M | 0.17% | 144 |
|
|
2015
Q2 | $26.2M | Sell |
75,664
-788
| -1% | -$287K | 0.04% | 524 |
|
|
2015
Q1 | $28M | Sell |
76,452
-760
| -1% | -$275K | 0.04% | 471 |
|
|
2014
Q4 | $27.6M | Sell |
77,212
-516
| -0.7% | -$176K | 0.04% | 484 |
|
|
2014
Q3 | $25.5M | Buy |
77,728
+25,844
| +50% | +$8.32M | 0.04% | 489 |
|
|
2014
Q2 | $16.6M | Buy |
51,884
+370
| +0.7% | +$113K | 0.03% | 643 |
|
|
2014
Q1 | $16.2M | Sell |
51,514
-12,065
| -19% | -$3.69M | 0.03% | 647 |
|
|
2013
Q4 | $20.1M | Buy |
63,579
+128
| +0.2% | +$38.2K | 0.03% | 538 |
|
|
2013
Q3 | $17.2M | Sell |
63,451
-6,023
| -9% | -$1.64M | 0.03% | 556 |
|
|
2013
Q2 | $17.8M | Buy |
+69,474
| New | +$18.6M | 0.04% | 509 |
|
Other funds holding BLK
VCM
VPM
William Blair & Company's BLK Position: Q1 2026 in Review
William Blair & Company reduced its Blackrock (BLK) stake by 11% in Q1 2026, selling an estimated $7.69M and leaving 59,288 shares worth $57M. The position accounts for 0.16% of the portfolio, ranked #130.
William Blair & Company first reported a position in BLK in Q2 2013 and has held it in 51 quarters since. The position peaked at $81.6M in Q3 2025. 2,322 funds tracked by Wall St. Rank hold BLK as of Q1 2026.
- William Blair & Company held 59,288 shares of Blackrock worth $57M as of Q1 2026.
- William Blair & Company sold 7,312 Blackrock shares in Q1 2026, an estimated $7.69M.
- Blackrock made up 0.16% of William Blair & Company's portfolio in Q1 2026, its #130 holding.
- William Blair & Company first reported a position in Blackrock in Q2 2013 and has held it in 51 quarters since.
- William Blair & Company's Blackrock position peaked at $81.6M in Q3 2025.
- 2,322 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.