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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 | |
|---|---|---|---|---|---|---|
|
GRID
1401
First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund
GRID
$12.3B
| $222K | ﹤0.01% |
1,860
+68
| +4% | +$8.46K |
|
1402
Alcoa
AA
$13.4B
| $222K | ﹤0.01% |
5,870
-200
| -3% | -$8.31K |
|
1403
Upstart Holdings
UPST
$2.89B
| $222K | ﹤0.01% |
+3,600
| New | +$224K |
|
|
AD
1404
Array Digital Infrastructure
AD
$3.08B
| $220K | ﹤0.01% |
+3,500
| New | +$214K |
|
1405
Bank of Marin Bancorp
BMRC
$466M
| $219K | ﹤0.01% |
+9,230
| New | +$218K |
|
1406
Kemper
KMPR
$1.58B
| $219K | ﹤0.01% |
3,299
| – | – |
|
1407
Brown-Forman Class B
BF.B
$13.1B
| $218K | ﹤0.01% |
5,748
-1,224
| -18% | -$53.8K |
|
1408
NOV
NOV
$7.33B
| $218K | ﹤0.01% |
+14,936
| New | +$233K |
|
1409
First Trust Large Cap Growth AlphaDEX Fund
FTC
$1.41B
| $218K | ﹤0.01% |
1,575
| – | – |
|
1410
iShares US Telecommunications ETF
IYZ
$1.24B
| $217K | ﹤0.01% |
8,101
+49
| +0.6% | +$1.31K |
|
1411
Bain Capital Specialty
BCSF
$830M
| $216K | ﹤0.01% |
12,339
-17,231
| -58% | -$291K |
|
1412
Enovis
ENOV
$1.43B
| $214K | ﹤0.01% |
4,870
+200
| +4% | +$8.78K |
|
1413
Louisiana-Pacific
LPX
$5.24B
| $213K | ﹤0.01% |
2,058
-3,077
| -60% | -$335K |
|
1414
MP Materials
MP
$9.82B
| $213K | ﹤0.01% |
13,632
-16,050
| -54% | -$298K |
|
1415
Cohu
COHU
$2.68B
| $212K | ﹤0.01% |
7,952
-1,508
| -16% | -$39.5K |
|
1416
CNB Financial Corp
CCNE
$1.04B
| $211K | ﹤0.01% |
8,500
| – | – |
|
|
TXNM
1417
TXNM Energy Inc
TXNM
$5.91B
| $211K | ﹤0.01% |
+4,290
| New | +$198K |
|
1418
Vicor
VICR
$10.5B
| $211K | ﹤0.01% |
4,360
-1,520
| -26% | -$75.9K |
|
1419
Huntington Ingalls Industries
HII
$12.8B
| $211K | ﹤0.01% |
1,115
-1,994
| -64% | -$431K |
|
1420
Scotiabank
BNS
$110B
| $210K | ﹤0.01% |
3,903
+10
| +0.3% | +$540 |
|
1421
Global X Internet of Things ETF
SNSR
$224M
| $209K | ﹤0.01% |
5,991
| – | – |
|
1422
Gentex
GNTX
$4.95B
| $208K | ﹤0.01% |
7,245
| – | – |
|
1423
Gen Digital
GEN
$17.4B
| $208K | ﹤0.01% |
7,595
-277
| -4% | -$7.96K |
|
1424
Peloton Interactive
PTON
$2.41B
| $208K | ﹤0.01% |
23,895
-3,506
| -13% | -$27.3K |
|
1425
Fidus Investment
FDUS
$754M
| $208K | ﹤0.01% |
+9,883
| New | +$200K |
|
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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.