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William Blair & Company

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
Cap. Flow
-$18.6M
Cap. Flow %
-0.05%
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
BLK icon
Blackrock
BLK
+$53.4M
3
CWAN
Clearwater Analytics
CWAN
+$48.5M
4
NVDA icon
NVIDIA
NVDA
+$47.9M
5
BWXT icon
BWX Technologies
BWXT
+$47M

Top Sells

Rank Stock Value
1
DXCM icon
DexCom
DXCM
+$37.7M
2
CSGP icon
CoStar Group
CSGP
+$34.5M
3
VRTX icon
Vertex Pharmaceuticals
VRTX
+$30M
4
BAH icon
Booz Allen Hamilton
BAH
+$29.1M
5
IDXX icon
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
VOOV icon
576
Vanguard S&P 500 Value ETF
VOOV
$6.78B
$3.63M 0.01%
19,690
-1,223
-6% -$235K
COO icon
577
Cooper Companies
COO
$15B
$3.62M 0.01%
39,337
-1,365
-3% -$139K
THS
578
DELISTED
Treehouse Foods
THS
$3.6M 0.01%
102,581
-109,778
-52% -$4M
SPIB icon
579
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF
SPIB
$11.6B
$3.59M 0.01%
109,601
+5,487
+5% +$182K
PRAA icon
580
PRA Group
PRAA
$786M
$3.55M 0.01%
170,139
+3,200
+2% +$68.3K
SMAR
581
DELISTED
Smartsheet Inc.
SMAR
$3.52M 0.01%
62,902
-9,905
-14% -$554K
CHKP icon
582
Check Point Software Technologies
CHKP
$13.3B
$3.52M 0.01%
18,855
+237
+1% +$44.6K
OSW icon
583
OneSpaWorld
OSW
$2.72B
$3.5M 0.01%
176,074
+157,309
+838% +$2.92M
FSS icon
584
Federal Signal
FSS
$7.74B
$3.48M 0.01%
37,664
+22,340
+146% +$2.05M
TRGP icon
585
Targa Resources
TRGP
$57.8B
$3.47M 0.01%
19,416
+1,126
+6% +$202K
MOD icon
586
Modine Manufacturing
MOD
$10.8B
$3.46M 0.01%
+29,839
New +$3.84M
BDEC icon
587
Innovator US Equity Buffer ETF December
BDEC
$223M
$3.43M 0.01%
+79,464
New +$3.46M
PRI icon
588
Primerica
PRI
$9.56B
$3.42M 0.01%
12,617
+438
+4% +$124K
HHS icon
589
Harte-Hanks
HHS
$21.4M
$3.4M 0.01%
660,845
– –
MUB icon
590
iShares National Muni Bond ETF
MUB
$45.9B
$3.39M 0.01%
31,831
-729
-2% -$78.3K
AIOT
591
PowerFleet Inc
AIOT
$420M
$3.39M 0.01%
508,920
+338,520
+199% +$2.03M
KAPR icon
592
Innovator US Small Cap Power Buffer ETF April
KAPR
$219M
$3.39M 0.01%
103,635
-4,653
-4% -$154K
ZBH icon
593
Zimmer Biomet
ZBH
$18.8B
$3.38M 0.01%
31,963
-1,174
-4% -$126K
ITT icon
594
ITT
ITT
$19.3B
$3.34M 0.01%
23,351
-382
-2% -$57.2K
VDE icon
595
Vanguard Energy ETF
VDE
$10.4B
$3.32M 0.01%
27,394
-2,012
-7% -$256K
KAUG
596
Innovator U.S. Small Cap Power Buffer ETF - August
KAUG
$63.9M
$3.29M 0.01%
130,975
-6,359
-5% -$162K
RGLD icon
597
Royal Gold
RGLD
$19.2B
$3.28M 0.01%
24,885
-1
-0% -$144
GPN icon
598
Global Payments
GPN
$24B
$3.25M 0.01%
28,976
-7,720
-21% -$844K
PRU icon
599
Prudential Financial
PRU
$42.6B
$3.23M 0.01%
27,286
+457
+2% +$56.4K
IWS icon
600
iShares Russell Mid-Cap Value ETF
IWS
$16B
$3.22M 0.01%
24,924
+1,105
+5% +$148K
22 23
24
25 26

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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.