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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+3.1%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$34.4B
AUM Growth
+$328M
(+0.96%)
Cap. Flow
-$18.6M
Cap. Flow
% of AUM
-0.05%
Top 10 Holdings %
Top 10 Hldgs %
25.12%
Holding
1,903
New
83
Increased
650
Reduced
792
Closed
87
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
XYZ
Block Inc
XYZ
|
+$80.6M |
| 2 |
Blackrock
BLK
|
+$53.4M |
| 3 |
CWAN
Clearwater Analytics
CWAN
|
+$48.5M |
| 4 |
NVIDIA
NVDA
|
+$47.9M |
| 5 |
BWX Technologies
BWXT
|
+$47M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
DexCom
DXCM
|
+$37.7M |
| 2 |
CoStar Group
CSGP
|
+$34.5M |
| 3 |
Vertex Pharmaceuticals
VRTX
|
+$30M |
| 4 |
Booz Allen Hamilton
BAH
|
+$29.1M |
| 5 |
Idexx Laboratories
IDXX
|
+$26.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 28.35% |
| 2 | Financials | 13.43% |
| 3 | Healthcare | 12.44% |
| 4 | Industrials | 11.81% |
| 5 | Consumer Discretionary | 8.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
Vanguard Morningstar Growth ETF
VUG
$229B
| $78.6M | 0.23% |
1,148,700
-6,600
| -0.6% | -$443K |
|
102
Automatic Data Processing
ADP
$106B
| $77.1M | 0.22% |
263,297
-4,528
| -2% | -$1.34M |
|
103
Vanguard Morningstar Total Stock Market ETF
VTI
$692B
| $76.6M | 0.22% |
264,309
+3,880
| +1% | +$1.13M |
|
104
Wabtec
WAB
$50.3B
| $76.6M | 0.22% |
403,918
-27,518
| -6% | -$5.33M |
|
105
Thermo Fisher Scientific
TMO
$223B
| $75.4M | 0.22% |
144,866
-1,547
| -1% | -$851K |
|
106
RB Global
RBA
$16.1B
| $73.2M | 0.21% |
811,401
+6,445
| +0.8% | +$577K |
|
107
Novanta
NOVT
$6.39B
| $68.5M | 0.2% |
448,434
+10,459
| +2% | +$1.77M |
|
108
lululemon athletica
LULU
$13.8B
| $68.4M | 0.2% |
178,950
-17,891
| -9% | -$5.84M |
|
109
iShares Russell 3000 ETF
IWV
$20.4B
| $66.7M | 0.19% |
199,544
-9,511
| -5% | -$3.2M |
|
110
Boeing
BA
$183B
| $66.7M | 0.19% |
376,637
+226,135
| +150% | +$35.5M |
|
|
111
Booz Allen Hamilton
BAH
$9.42B
| $66M | 0.19% |
512,802
-187,235
| -27% | -$29.1M |
|
112
Honeywell
HON
$74.5B
| $65.6M | 0.19% |
308,007
+3,704
| +1% | +$772K |
|
113
Invesco S&P 500 Equal Weight ETF
RSP
$99.6B
| $64.3M | 0.19% |
367,092
+96,323
| +36% | +$17.4M |
|
114
iShares MSCI EAFE ETF
EFA
$80.1B
| $62.3M | 0.18% |
824,505
-20,043
| -2% | -$1.59M |
|
115
iShares Core S&P Total US Stock Market ETF
ITOT
$97.9B
| $61.8M | 0.18% |
480,124
+21,248
| +5% | +$2.75M |
|
116
Marvell Technology
MRVL
$199B
| $60.2M | 0.18% |
545,388
-23,888
| -4% | -$2.22M |
|
117
Pfizer
PFE
$150B
| $60.2M | 0.18% |
2,270,019
-192,304
| -8% | -$5.22M |
|
118
Procore
PCOR
$8.78B
| $60M | 0.17% |
800,784
+244,126
| +44% | +$17.3M |
|
119
Toast
TOST
$19.5B
| $58M | 0.17% |
1,592,451
-53,557
| -3% | -$1.88M |
|
120
ResMed
RMD
$32.8B
| $57.5M | 0.17% |
251,255
-15,263
| -6% | -$3.68M |
|
121
W.W. Grainger
GWW
$61.7B
| $57.4M | 0.17% |
54,474
-322
| -0.6% | -$363K |
|
|
CYBR
122
DELISTED
CyberArk
CYBR
| $55.7M | 0.16% |
167,202
+8,222
| +5% | +$2.5M |
|
123
Walt Disney
DIS
$178B
| $55.5M | 0.16% |
498,669
-9,209
| -2% | -$967K |
|
124
Qualcomm
QCOM
$172B
| $55.5M | 0.16% |
361,416
-7,608
| -2% | -$1.25M |
|
125
RBC Bearings
RBC
$17.7B
| $55.5M | 0.16% |
185,600
+87,624
| +89% | +$27M |
|
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William Blair & Company's Q4 2024 Portfolio in Review
As of Q4 2024, William Blair & Company held 1,903 positions worth $34.4B, up 0.96% from $34.1B the previous quarter. Its ten largest holdings account for 25% of the portfolio.
William Blair & Company's Q4 2024 filing shows 83 new, 650 increased, 792 reduced and 87 closed positions. Its largest new stake was Blackrock: 52,623 shares worth $53.9M. The largest sale was DexCom, an estimated $37.7M.
By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Financials and Healthcare.
- William Blair & Company's largest Q4 2024 buy was Blackrock: 52,623 shares worth $53.9M.
- William Blair & Company added most to Block Inc in Q4 2024, an estimated $80.6M increase.
- William Blair & Company's biggest Q4 2024 reduction was DexCom, cutting an estimated $37.7M.
- William Blair & Company fully exited Rush Street Interactive in Q4 2024, selling an estimated $5.79M.
- William Blair & Company's ten largest holdings make up 25% of its $34.4B portfolio in Q4 2024.
- William Blair & Company opened 83 new positions and closed 87 in Q4 2024.
- William Blair & Company's portfolio value rose 0.96% quarter-over-quarter to $34.4B.
Based on William Blair & Company's 13F filing for Q4 2024, filed 12 Feb 2025.