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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
PRFZ icon
1301
Invesco FTSE RAFI US 1500 Small-Mid ETF
PRFZ
$2.9B
$286K ﹤0.01%
6,867
-158
-2% -$6.76K
PNR icon
1302
Pentair
PNR
$10.5B
$285K ﹤0.01%
+2,830
New +$290K
INVH icon
1303
Invitation Homes
INVH
$17.9B
$285K ﹤0.01%
8,901
-17
-0.2% -$568
ARCT icon
1304
Arcturus Therapeutics
ARCT
$226M
$284K ﹤0.01%
16,735
-1,095
-6% -$20.6K
GSLC icon
1305
Goldman Sachs ActiveBeta US Large Cap Equity ETF
GSLC
$16B
$283K ﹤0.01%
2,461
-259
-10% -$30.1K
PFG icon
1306
Principal Financial Group
PFG
$24.4B
$283K ﹤0.01%
3,658
-350
-9% -$29.5K
IWX icon
1307
iShares Russell Top 200 Value ETF
IWX
$4.03B
$281K ﹤0.01%
3,561
+256
+8% +$21K
USMC icon
1308
Principal Exchange-Traded Funds Principal US Mega-Cap ETF
USMC
$3.7B
$281K ﹤0.01%
4,683
+986
+27% +$58.1K
CINF icon
1309
Cincinnati Financial
CINF
$26.4B
$281K ﹤0.01%
1,956
+14
+0.7% +$2.04K
EMB icon
1310
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$15B
$281K ﹤0.01%
3,151
+436
+16% +$39.8K
DGRS icon
1311
WisdomTree Trust WisdomTree US SmallCap Quality Dividend Growth Fund
DGRS
$415M
$280K ﹤0.01%
5,470
– –
KSS icon
1312
Kohl's
KSS
$2.16B
$280K ﹤0.01%
19,933
-4,873
-20% -$84K
ACCD
1313
DELISTED
Accolade Inc
ACCD
$280K ﹤0.01%
81,763
+28,673
+54% +$102K
TAN icon
1314
Invesco Solar ETF
TAN
$1.37B
$279K ﹤0.01%
8,436
-1,629
-16% -$60.1K
UA icon
1315
Under Armour Class C
UA
$2.23B
$278K ﹤0.01%
37,272
+4,050
+12% +$33.8K
DOX icon
1316
Amdocs
DOX
$6.08B
$276K ﹤0.01%
3,245
-73
-2% -$6.41K
AGI icon
1317
Alamos Gold
AGI
$13.6B
$276K ﹤0.01%
14,962
-420
-3% -$8.12K
IFRA icon
1318
iShares US Infrastructure ETF
IFRA
$4.63B
$274K ﹤0.01%
5,928
+26
+0.4% +$1.26K
CAKE icon
1319
Cheesecake Factory
CAKE
$5.71B
$274K ﹤0.01%
5,772
+283
+5% +$13K
NJAN icon
1320
Innovator Growth-100 Power Buffer ETF January
NJAN
$356M
$273K ﹤0.01%
5,681
– –
CDRO icon
1321
Codere Online
CDRO
$410M
$272K ﹤0.01%
42,202
-17,050
-29% -$132K
ALC icon
1322
Alcon
ALC
$35.4B
$272K ﹤0.01%
3,204
+482
+18% +$43.5K
NRG icon
1323
NRG Energy
NRG
$25.3B
$271K ﹤0.01%
3,004
+1,412
+89% +$131K
KBH icon
1324
KB Home
KBH
$3.45B
$269K ﹤0.01%
4,100
– –
VMBS icon
1325
Vanguard Mortgage-Backed Securities ETF
VMBS
$15.7B
$269K ﹤0.01%
5,938
+2,865
+93% +$132K
51 52
53
54 55

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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.