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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 | |
|---|---|---|---|---|---|---|
351
Arm
ARM
$290B
| $9.55M | 0.03% |
77,380
+28,217
| +57% | +$3.98M |
|
352
Huntington Bancshares
HBAN
$36.1B
| $9.4M | 0.03% |
577,670
-7,519
| -1% | -$124K |
|
353
PAR Technology
PAR
$741M
| $9.37M | 0.03% |
128,937
+55,204
| +75% | +$3.78M |
|
354
Texas Pacific Land
TPL
$23.6B
| $9.23M | 0.03% |
25,041
+1,170
| +5% | +$478K |
|
355
Hubbell
HUBB
$27.1B
| $9.11M | 0.03% |
21,754
+11
| +0.1% | +$4.91K |
|
|
MRSH
356
Marsh
MRSH
$90.1B
| $9.08M | 0.03% |
42,763
+1,974
| +5% | +$438K |
|
357
Analog Devices
ADI
$187B
| $8.96M | 0.03% |
42,156
+1,064
| +3% | +$235K |
|
358
Becton Dickinson
BDX
$50B
| $8.88M | 0.03% |
39,121
+799
| +2% | +$184K |
|
359
Church & Dwight Co
CHD
$24B
| $8.84M | 0.03% |
84,444
+1,599
| +2% | +$169K |
|
360
iShares Russell 2000 Value ETF
IWN
$14.6B
| $8.84M | 0.03% |
53,831
-8,704
| -14% | -$1.49M |
|
361
AT&T
T
$166B
| $8.61M | 0.03% |
377,954
-21,757
| -5% | -$490K |
|
362
iShares MSCI EAFE Growth ETF
EFG
$17.4B
| $8.6M | 0.03% |
88,853
-38,456
| -30% | -$3.91M |
|
363
Vanguard Intermediate-Term Bond ETF
BIV
$28.8B
| $8.52M | 0.02% |
114,074
+2,103
| +2% | +$160K |
|
364
Klaviyo
KVYO
$4.91B
| $8.5M | 0.02% |
206,224
-744
| -0.4% | -$28.4K |
|
365
Southern Company
SO
$106B
| $8.5M | 0.02% |
103,227
-1,055
| -1% | -$92.6K |
|
366
Northrop Grumman
NOC
$82B
| $8.5M | 0.02% |
18,105
-1,196
| -6% | -$602K |
|
367
GE HealthCare
GEHC
$32.6B
| $8.49M | 0.02% |
108,621
-1,752
| -2% | -$149K |
|
368
Qualys
QLYS
$6.47B
| $8.43M | 0.02% |
60,138
-1,527
| -2% | -$213K |
|
369
Vertiv
VRT
$111B
| $8.43M | 0.02% |
74,158
+67,290
| +980% | +$7.99M |
|
370
iShares TIPS Bond ETF
TIP
$14.7B
| $8.39M | 0.02% |
78,739
-6,820
| -8% | -$738K |
|
371
Carvana
CVNA
$79.7B
| $8.38M | 0.02% |
206,015
-14,610
| -7% | -$656K |
|
372
Tenable Holdings
TENB
$4.08B
| $8.35M | 0.02% |
212,117
-59,501
| -22% | -$2.47M |
|
373
JFrog
FROG
$10.4B
| $8.3M | 0.02% |
282,084
+968
| +0.3% | +$29.4K |
|
374
Vanguard Morningstar Small-Cap Growth ETF
VBK
$24.8B
| $8.27M | 0.02% |
29,515
-1,005
| -3% | -$284K |
|
375
Bio-Techne
TECH
$11.3B
| $8.22M | 0.02% |
114,129
+9,459
| +9% | +$695K |
|
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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.