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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
JMUB icon
1801
JPMorgan Municipal ETF
JMUB
$8.51B
– –
-413
Closed -$20K
KBWD icon
1802
Invesco KBW High Dividend Yield Financial ETF
KBWD
$427M
– –
-725
Closed -$11K
KTOS icon
1803
Kratos Defense & Security Solutions
KTOS
$12B
– –
-10,700
Closed -$161K
LBTYA icon
1804
Liberty Global Class A
LBTYA
$3.55B
– –
-1,393
Closed -$23.8K
LBTYK icon
1805
Liberty Global Class C
LBTYK
$3.46B
– –
-19,648
Closed -$365K
LCID icon
1806
Lucid Motors
LCID
$2.58B
– –
-1,569
Closed -$87.7K
LUMN icon
1807
Lumen
LUMN
$6.49B
– –
-62,171
Closed -$88.3K
MAMA icon
1808
Mama's Creations
MAMA
$826M
– –
-25,000
Closed -$109K
MTCH icon
1809
Match Group
MTCH
$8.4B
– –
-8,941
Closed -$350K
MYGN icon
1810
Myriad Genetics
MYGN
$309M
– –
-11,866
Closed -$190K
NEAR icon
1811
iShares Short Maturity Bond ETF
NEAR
$4.88B
– –
-871
Closed -$43.5K
NFG icon
1812
National Fuel Gas
NFG
$7.77B
– –
-4,585
Closed -$238K
NOMD icon
1813
Nomad Foods
NOMD
$1.59B
– –
-12,477
Closed -$190K
NVT icon
1814
nVent Electric
NVT
$27.7B
– –
-4,030
Closed -$214K
OGS icon
1815
ONE Gas
OGS
$5.05B
– –
-3,080
Closed -$210K
OLO
1816
DELISTED
Olo Inc
OLO
– –
-106,989
Closed -$648K
OTLY
1817
Oatly Group
OTLY
$420M
– –
-755
Closed -$13.5K
PEJ icon
1818
Invesco Leisure and Entertainment ETF
PEJ
$312M
– –
-2
Closed -$77
PFGC icon
1819
Performance Food Group
PFGC
$16.9B
– –
-10,537
Closed -$620K
PNW icon
1820
Pinnacle West Capital
PNW
$12.2B
– –
-3,882
Closed -$286K
PPSI
1821
Pioneer Power Solutions
PPSI
$34.1M
– –
-33,240
Closed -$208K
RILY icon
1822
BRC Group Holdings
RILY
$304M
– –
-12,329
Closed -$505K
RWM icon
1823
ProShares Short Russell2000
RWM
$99.7M
– –
-300
Closed -$7.26K
SCI icon
1824
Service Corp International
SCI
$11.5B
– –
-9,382
Closed -$536K
SEDG icon
1825
SolarEdge
SEDG
$1.97B
– –
-1,825
Closed -$236K
71 72
73
74 75

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HF
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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.