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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
NANR icon
1751
State Street SPDR S&P North American Natural Resources ETF
NANR
$812M
$6.03K ﹤0.01%
118
– –
TBT icon
1752
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$309M
$5.49K ﹤0.01%
150
– –
DFE icon
1753
WisdomTree Europe SmallCap Dividend Fund
DFE
$168M
$5.38K ﹤0.01%
95
– –
RSPS icon
1754
Invesco S&P 500 Equal Weight Consumer Staples ETF
RSPS
$246M
$5.27K ﹤0.01%
175
– –
PJP icon
1755
Invesco Pharmaceuticals ETF
PJP
$499M
$4.96K ﹤0.01%
60
– –
FSTA icon
1756
Fidelity MSCI Consumer Staples Index ETF
FSTA
$1.42B
$4.89K ﹤0.01%
99
-181
-65% -$9.17K
CHGG icon
1757
Chegg
CHGG
$88.9M
$4.72K ﹤0.01%
2,933
– –
LEGR icon
1758
First Trust Indxx Innovative Transaction & Process ETF
LEGR
$133M
$4.64K ﹤0.01%
100
– –
AIA icon
1759
iShares Asia 50 ETF
AIA
$5.04B
$4.48K ﹤0.01%
66
– –
DSTL icon
1760
Distillate US Fundamental Stability & Value ETF
DSTL
$2.05B
$4.46K ﹤0.01%
81
– –
GIGB icon
1761
Goldman Sachs Access Investment Grade Corporate Bond ETF
GIGB
$970M
$4.37K ﹤0.01%
97
– –
EWL icon
1762
iShares MSCI Switzerland ETF
EWL
$2.22B
$4.37K ﹤0.01%
+95
New +$4.63K
PGJ icon
1763
Invesco Golden Dragon China ETF
PGJ
$95.1M
$4.03K ﹤0.01%
154
-2,696
-95% -$73K
DFNM icon
1764
Dimensional National Municipal Bond ETF
DFNM
$2.26B
$3.92K ﹤0.01%
82
– –
PSL icon
1765
Invesco Dorsey Wright Consumer Staples Momentum ETF
PSL
$83.4M
$3.88K ﹤0.01%
+37
New +$3.89K
SPLB icon
1766
State Street SPDR Portfolio Long Term Corporate Bond ETF
SPLB
$1.18B
$3.87K ﹤0.01%
174
– –
ISCV icon
1767
iShares Morningstar Small-Cap Value ETF
ISCV
$706M
$3.81K ﹤0.01%
60
-15
-20% -$978
IGLB icon
1768
iShares 10+ Year Investment Grade Corporate Bond ETF
IGLB
$2.78B
$3.71K ﹤0.01%
75
-43
-36% -$2.21K
ROM icon
1769
ProShares Ultra Technology
ROM
$1.3B
$3.63K ﹤0.01%
+52
New +$3.67K
EWQ icon
1770
iShares MSCI France ETF
EWQ
$333M
$3.62K ﹤0.01%
101
-67
-40% -$2.5K
EINC icon
1771
VanEck Energy Income ETF
EINC
$79.5M
$3.57K ﹤0.01%
38
– –
PRN icon
1772
Invesco Dorsey Wright Industrials Momentum ETF
PRN
$445M
$3.38K ﹤0.01%
+22
New +$3.6K
QLTA icon
1773
iShares AAA-A Rated Corporate Bond ETF
QLTA
$1.21B
$3.13K ﹤0.01%
67
-152
-69% -$7.26K
PEZ icon
1774
Invesco Dorsey Wright Consumer Cyclicals Momentum ETF
PEZ
$22.5M
$3.06K ﹤0.01%
+31
New +$3.27K
XRLV
1775
DELISTED
Invesco S&P 500 ex-Rate Sensitive Low Volatility ETF
XRLV
$2.92K ﹤0.01%
55
– –
69 70
71
72 73

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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.