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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
+14.12%
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
$29.3B
AUM Growth
+$3.27B
Cap. Flow
-$91M
Cap. Flow %
-0.31%
Top 10 Hldgs %
24.41%
Holding
1,872
New
83
Increased
624
Reduced
816
Closed
87

Top Buys

Rank Stock Value
1
GWRE icon
Guidewire Software
GWRE
+$37.5M
2
SCHW
Charles Schwab
SCHW
+$37.1M
3
VLTO icon
Veralto
VLTO
+$17.1M
4
VRTX icon
Vertex Pharmaceuticals
VRTX
+$16.7M
5
CSGP icon
CoStar Group
CSGP
+$16.3M

Top Sells

Rank Stock Value
1
DHR icon
Danaher
DHR
+$37.6M
2
IRTC icon
iRhythm Holdings
IRTC
+$26.7M
3
DE icon
Deere & Co
DE
+$22.6M
4
TOST icon
Toast
TOST
+$21.2M
5
KO icon
Coca-Cola
KO
+$20.3M

Sector Composition

Rank Sector Weight
1 Technology 26.35%
2 Healthcare 17.08%
3 Financials 12.09%
4 Industrials 11.7%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SPTL icon
1726
State Street SPDR Portfolio Long Term Treasury ETF
SPTL
$10.7B
$4.27K ﹤0.01%
147
-317
-68% -$8.44K
LEGR icon
1727
First Trust Indxx Innovative Transaction & Process ETF
LEGR
$133M
$4.09K ﹤0.01%
100
– –
AIA icon
1728
iShares Asia 50 ETF
AIA
$5.04B
$3.83K ﹤0.01%
66
– –
NANR icon
1729
State Street SPDR S&P North American Natural Resources ETF
NANR
$812M
$3.52K ﹤0.01%
69
– –
FXZ icon
1730
First Trust Materials AlphaDEX Fund
FXZ
$390M
$3.15K ﹤0.01%
46
+1
+2% +$63
ANGL icon
1731
VanEck Fallen Angel High Yield Bond ETF
ANGL
$3.11B
$2.94K ﹤0.01%
102
-22
-18% -$607
XRLV
1732
DELISTED
Invesco S&P 500 ex-Rate Sensitive Low Volatility ETF
XRLV
$2.61K ﹤0.01%
55
– –
EINC icon
1733
VanEck Energy Income ETF
EINC
$79.5M
$2.61K ﹤0.01%
38
– –
SRVR icon
1734
Pacer Data & Infrastructure Real Estate ETF
SRVR
$386M
$2.42K ﹤0.01%
81
-455
-85% -$12.4K
FSTA icon
1735
Fidelity MSCI Consumer Staples Index ETF
FSTA
$1.42B
$2.41K ﹤0.01%
54
– –
IBTE
1736
DELISTED
iShares iBonds Dec 2024 Term Treasury ETF
IBTE
$2.39K ﹤0.01%
100
+93
+1,329% +$2.22K
BLV icon
1737
Vanguard Long-Term Bond ETF
BLV
$5.7B
$2.39K ﹤0.01%
32
– –
NORW icon
1738
Global X MSCI Norway ETF
NORW
$87.7M
$2.22K ﹤0.01%
87
– –
IAK icon
1739
iShares US Insurance ETF
IAK
$534M
$2.2K ﹤0.01%
22
– –
USDU icon
1740
WisdomTree Bloomberg US Dollar Bullish Fund
USDU
$458M
$2.13K ﹤0.01%
85
– –
IYT icon
1741
iShares US Transportation ETF
IYT
$2.27B
$2.1K ﹤0.01%
+32
New +$1.92K
VGLT icon
1742
Vanguard Long-Term Treasury ETF
VGLT
$10.3B
$2.03K ﹤0.01%
33
– –
CMBS icon
1743
iShares CMBS ETF
CMBS
$472M
$1.92K ﹤0.01%
+41
New +$1.86K
HYLS icon
1744
First Trust Exchange-Traded Fund IV First Trust Tactical High Yield ETF
HYLS
$1.64B
$1.91K ﹤0.01%
+46
New +$1.83K
XSLV icon
1745
Invesco S&P SmallCap Low Volatility ETF
XSLV
$249M
$1.85K ﹤0.01%
42
– –
TIPX icon
1746
State Street SPDR Bloomberg 1-10 Year TIPS ETF
TIPX
$2.04B
$1.77K ﹤0.01%
+95
New +$1.73K
MJ icon
1747
Amplify Alternative Harvest ETF
MJ
$111M
$1.5K ﹤0.01%
39
+14
+56% +$526
MXI icon
1748
iShares Global Materials ETF
MXI
$361M
$1.45K ﹤0.01%
17
+1
+6% +$81
ECH icon
1749
iShares MSCI Chile ETF
ECH
$1.03B
$1.41K ﹤0.01%
+50
New +$1.3K
SPXU icon
1750
ProShares UltraPro Short S&P 500
SPXU
$385M
$1.38K ﹤0.01%
8
– –
68 69
70
71 72

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William Blair & Company's Q4 2023 Portfolio in Review

As of Q4 2023, William Blair & Company held 1,872 positions worth $29.3B, up 13% from $26.1B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2023 filing shows 83 new, 624 increased, 816 reduced and 87 closed positions. Its largest new stake was Veralto: 229,539 shares worth $18.9M. The largest sale was Danaher, an estimated $37.6M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2023 buy was Veralto: 229,539 shares worth $18.9M.
  • William Blair & Company added most to Guidewire Software in Q4 2023, an estimated $37.5M increase.
  • William Blair & Company's biggest Q4 2023 reduction was Danaher, cutting an estimated $37.6M.
  • William Blair & Company fully exited Seagen Inc. Common Stock in Q4 2023, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.3B portfolio in Q4 2023.
  • William Blair & Company opened 83 new positions and closed 87 in Q4 2023.
  • William Blair & Company's portfolio value rose 13% quarter-over-quarter to $29.3B.

Based on William Blair & Company's 13F filing for Q4 2023, filed 12 Feb 2024.