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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 | |
|---|---|---|---|---|---|---|
1126
iShares US Consumer Staples ETF
IYK
$1.43B
| $456K | ﹤0.01% |
6,958
+552
| +9% | +$37.9K |
|
1127
Packaging Corp of America
PKG
$22.9B
| $454K | ﹤0.01% |
2,017
-136
| -6% | -$31.5K |
|
|
NDEC
1128
Innovator Growth-100 Power Buffer ETF - December
NDEC
$62.5M
| $449K | ﹤0.01% |
+18,411
| New | +$453K |
|
1129
iShares US Small Cap Equity Factor ETF
SMLF
$4.33B
| $447K | ﹤0.01% |
6,626
+28
| +0.4% | +$1.94K |
|
1130
Clean Harbors
CLH
$16.9B
| $445K | ﹤0.01% |
1,935
| – | – |
|
|
CSGS
1131
DELISTED
CSG Systems International
CSGS
| $445K | ﹤0.01% |
8,705
-13,709
| -61% | -$706K |
|
1132
Evercore
EVR
$12B
| $443K | ﹤0.01% |
1,598
-1
| -0.1% | -$283 |
|
1133
Inhibikase Therapeutics
IKT
$377M
| $439K | ﹤0.01% |
134,953
+8,833
| +7% | +$22K |
|
1134
JPMorgan Ultra-Short Municipal Income ETF
JMST
$7.15B
| $438K | ﹤0.01% |
8,643
-1,976
| -19% | -$100K |
|
1135
Atmos Energy
ATO
$28.7B
| $437K | ﹤0.01% |
3,135
+281
| +10% | +$40K |
|
|
SLRN
1136
DELISTED
ACELYRIN
SLRN
| $435K | ﹤0.01% |
138,595
| – | – |
|
1137
SM Energy
SM
$7.66B
| $435K | ﹤0.01% |
11,225
| – | – |
|
1138
iPath Select MLP ETN
ATMP
$643M
| $435K | ﹤0.01% |
+15,374
| New | +$429K |
|
1139
Greif
GEF
$5.04B
| $434K | ﹤0.01% |
7,094
-498
| -7% | -$32.5K |
|
1140
RLI Corp
RLI
$5.87B
| $433K | ﹤0.01% |
5,256
+2,002
| +62% | +$166K |
|
1141
MaxLinear
MXL
$6.85B
| $432K | ﹤0.01% |
21,854
-27,188
| -55% | -$436K |
|
1142
First Community Bankshares
FCBC
$928M
| $431K | ﹤0.01% |
10,357
| – | – |
|
1143
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.46B
| $431K | ﹤0.01% |
6,098
-232
| -4% | -$17.1K |
|
1144
Minerals Technologies
MTX
$2.25B
| $431K | ﹤0.01% |
5,657
+177
| +3% | +$13.9K |
|
1145
Blue Owl Capital
OBDC
$5.89B
| $430K | ﹤0.01% |
28,414
-14,789
| -34% | -$223K |
|
1146
Vital Farms
VITL
$499M
| $428K | ﹤0.01% |
+11,357
| New | +$404K |
|
1147
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$4.2B
| $427K | ﹤0.01% |
+7,852
| New | +$403K |
|
1148
Natera
NTRA
$44.9B
| $426K | ﹤0.01% |
+2,691
| New | +$392K |
|
1149
Nu Holdings
NU
$67.5B
| $425K | ﹤0.01% |
41,017
-241
| -0.6% | -$3.21K |
|
1150
iShares MSCI Intl Quality Factor ETF
IQLT
$14.3B
| $422K | ﹤0.01% |
11,367
+2,587
| +29% | +$101K |
|
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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.