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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+8.82%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$40.5B
AUM Growth
+$2.41B
Cap. Flow
+$166M
Cap. Flow %
0.41%
Top 10 Hldgs %
26.88%
Holding
451
New
40
Increased
141
Reduced
231
Closed
39

Top Buys

Rank Stock Value
1
META icon
Meta Platforms (Facebook)
META
+$732M
2
AAPL icon
Apple
AAPL
+$390M
3
TRU icon
TransUnion
TRU
+$198M
4
NVT icon
nVent Electric
NVT
+$164M
5
MANH icon
Manhattan Associates
MANH
+$159M

Top Sells

Rank Stock Value
1
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$1.17B
2
AXON
Axon Enterprise
AXON
+$211M
3
MMSI icon
Merit Medical Systems
MMSI
+$148M
4
BLDR icon
Builders FirstSource
BLDR
+$146M
5
TREX icon
Trex
TREX
+$144M

Sector Composition

Rank Sector Weight
1 Technology 34.33%
2 Consumer Discretionary 14.81%
3 Healthcare 14.4%
4 Financials 10.44%
5 Industrials 9.94%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NOVT icon
76
Novanta
NOVT
$6.4B
$173M 0.43%
964,480
+4,328
+0.5% +$752K
ACVA icon
77
ACV Auctions
ACVA
$1.37B
$172M 0.42%
8,446,815
+3,433,173
+68% +$63.3M
MZTI
78
The Marzetti Company
MZTI
$3.14B
$172M 0.42%
972,486
-41,928
-4% -$7.72M
EXP icon
79
Eagle Materials
EXP
$6.48B
$169M 0.42%
586,185
-9,091
-2% -$2.27M
NVT icon
80
nVent Electric
NVT
$28B
$167M 0.41%
+2,380,715
New +$164M
LYV icon
81
Live Nation Entertainment
LYV
$43.1B
$167M 0.41%
1,525,326
-253,622
-14% -$24.5M
HDB icon
82
HDFC Bank
HDB
$119B
$167M 0.41%
5,334,240
+328,406
+7% +$10.1M
FOLD
83
DELISTED
Amicus Therapeutics
FOLD
$166M 0.41%
15,582,962
+2,579,599
+20% +$28.1M
AZEK
84
DELISTED
The AZEK Co
AZEK
$166M 0.41%
+3,543,851
New +$152M
GTLS
85
DELISTED
Chart Industries
GTLS
$166M 0.41%
1,333,252
+226,759
+20% +$29.8M
TENB icon
86
Tenable Holdings
TENB
$4.05B
$165M 0.41%
4,073,514
+844,546
+26% +$35.2M
ONON icon
87
On Holding
ONON
$10.4B
$159M 0.39%
3,169,543
-45,901
-1% -$1.97M
SE icon
88
Sea Limited
SE
$79.2B
$159M 0.39%
+1,685,649
New +$127M
FSV icon
89
FirstService
FSV
$6.21B
$158M 0.39%
866,152
+4,281
+0.5% +$736K
TWST icon
90
Twist Bioscience
TWST
$7.82B
$157M 0.39%
3,477,295
+292,909
+9% +$13.9M
GOOGL icon
91
Alphabet (Google) Class A
GOOGL
$4.2T
$156M 0.39%
942,610
-6,962,832
-88% -$1.17B
BPMC
92
DELISTED
Blueprint Medicines
BPMC
$155M 0.38%
1,674,799
+80,883
+5% +$8.03M
TPG icon
93
TPG
TPG
$8.23B
$151M 0.37%
+2,618,705
New +$129M
RRX icon
94
Regal Rexnord
RRX
$11.5B
$147M 0.36%
884,474
+309,073
+54% +$47.7M
SHOP icon
95
Shopify
SHOP
$192B
$145M 0.36%
1,803,521
-153,266
-8% -$10.6M
CHDN icon
96
Churchill Downs
CHDN
$6.16B
$144M 0.36%
1,066,552
+168,141
+19% +$23.3M
MMSI icon
97
Merit Medical Systems
MMSI
$5.43B
$142M 0.35%
1,438,532
-1,614,929
-53% -$148M
VEEV icon
98
Veeva Systems
VEEV
$38.7B
$142M 0.35%
675,643
+138,753
+26% +$27.4M
ALTR
99
DELISTED
Altair Engineering Inc
ALTR
$141M 0.35%
1,471,184
+537,366
+58% +$48.8M
EVH icon
100
Evolent Health
EVH
$485M
$140M 0.34%
4,939,306
-86,737
-2% -$2.24M
2 3
4
5 6

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William Blair Investment Management's Q3 2024 Portfolio in Review

As of Q3 2024, William Blair Investment Management held 451 positions worth $40.5B, up 6.3% from $38.1B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair Investment Management's Q3 2024 filing shows 40 new, 141 increased, 231 reduced and 39 closed positions. Its largest new stake was nVent Electric: 2,380,715 shares worth $167M. The largest sale was Alphabet (Google) Class A, an estimated $1.17B.

By sector, the portfolio is most concentrated in Technology at 34% of assets, up from 34% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • William Blair Investment Management's largest Q3 2024 buy was nVent Electric: 2,380,715 shares worth $167M.
  • William Blair Investment Management added most to Meta Platforms (Facebook) in Q3 2024, an estimated $732M increase.
  • William Blair Investment Management's biggest Q3 2024 reduction was Alphabet (Google) Class A, cutting an estimated $1.17B.
  • William Blair Investment Management fully exited Axon Enterprise in Q3 2024, selling an estimated $211M.
  • William Blair Investment Management's ten largest holdings make up 27% of its $40.5B portfolio in Q3 2024.
  • William Blair Investment Management opened 40 new positions and closed 39 in Q3 2024.
  • William Blair Investment Management's portfolio value rose 6.3% quarter-over-quarter to $40.5B.

Based on William Blair Investment Management's 13F filing for Q3 2024, filed 8 Nov 2024.