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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
HCAT icon
1501
Health Catalyst
HCAT
$135M
$122K ﹤0.01%
17,234
-1,150
-6% -$9.16K
ICF icon
1502
iShares Select U.S. REIT ETF
ICF
$2.09B
$121K ﹤0.01%
2,016
– –
BUFR icon
1503
FT Vest Fund of Buffer ETFs
BUFR
$10.4B
$121K ﹤0.01%
3,983
+115
+3% +$3.49K
IGF icon
1504
iShares Global Infrastructure ETF
IGF
$10.7B
$119K ﹤0.01%
2,280
– –
XSMO icon
1505
Invesco S&P SmallCap Momentum ETF
XSMO
$3.13B
$119K ﹤0.01%
+1,801
New +$124K
FDIQ
1506
Invesco Bloomberg Financial Data Providers ETF
FDIQ
$48.1M
$116K ﹤0.01%
1,943
-124
-6% -$7.63K
DGS icon
1507
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.78B
$115K ﹤0.01%
2,342
-10
-0.4% -$511
EWW icon
1508
iShares MSCI Mexico ETF
EWW
$1.9B
$114K ﹤0.01%
2,437
– –
PIO icon
1509
Invesco Global Water ETF
PIO
$278M
$113K ﹤0.01%
2,884
– –
MINO icon
1510
PIMCO Municipal Income Opportunities Active ETF
MINO
$753M
$112K ﹤0.01%
2,490
– –
KCE icon
1511
State Street SPDR S&P Capital Markets ETF
KCE
$473M
$112K ﹤0.01%
813
– –
XHB icon
1512
State Street SPDR S&P Homebuilders ETF
XHB
$1.58B
$111K ﹤0.01%
1,064
+626
+143% +$73.4K
FREL icon
1513
Fidelity MSCI Real Estate Index ETF
FREL
$1.47B
$110K ﹤0.01%
4,085
-181
-4% -$5.18K
RWL icon
1514
Invesco S&P 500 Revenue ETF
RWL
$9.95B
$109K ﹤0.01%
+1,117
New +$112K
GENI icon
1515
Genius Sports
GENI
$2.12B
$109K ﹤0.01%
12,550
– –
SMMU icon
1516
PIMCO Short Term Municipal Bond Active Exchange-Traded Fund
SMMU
$1.17B
$108K ﹤0.01%
2,162
– –
BOND icon
1517
PIMCO Active Bond Exchange-Traded Fund
BOND
$8.47B
$106K ﹤0.01%
1,174
+100
+9% +$9.21K
HEDJ icon
1518
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.87B
$106K ﹤0.01%
2,417
+1
+0% +$44
EEMV icon
1519
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.6B
$105K ﹤0.01%
1,818
– –
CQQQ icon
1520
Invesco China Technology ETF
CQQQ
$3.24B
$104K ﹤0.01%
2,652
+2
+0.1% +$83
PKW icon
1521
Invesco BuyBack Achievers ETF
PKW
$1.78B
$101K ﹤0.01%
877
+217
+33% +$25.7K
JMIA
1522
Jumia Technologies
JMIA
$793M
$100K ﹤0.01%
26,200
+1,000
+4% +$4.49K
XJR icon
1523
iShares ESG Screened S&P Small-Cap ETF
XJR
$190M
$97.9K ﹤0.01%
2,379
– –
PETS icon
1524
PetMed Express
PETS
$43M
$97.8K ﹤0.01%
20,300
+9,900
+95% +$46.4K
GBF icon
1525
iShares Government/Credit Bond ETF
GBF
$128M
$96.3K ﹤0.01%
942
– –
59 60
61
62 63

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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.