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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
NEOG icon
51
Neogen
NEOG
$2.49B
$223M 0.55%
13,271,934
+1,258,862
+10% +$20.7M
CFLT
52
DELISTED
Confluent
CFLT
$221M 0.54%
10,829,290
+4,279,905
+65% +$95.8M
APO icon
53
Apollo Global Management
APO
$81.3B
$217M 0.53%
1,733,408
-150,193
-8% -$17.3M
POOL icon
54
Pool Corp
POOL
$7.26B
$214M 0.53%
568,640
-8,012
-1% -$2.77M
CF icon
55
CF Industries
CF
$17.5B
$205M 0.51%
2,393,689
+351,699
+17% +$27.2M
GWRE icon
56
Guidewire Software
GWRE
$14.3B
$205M 0.51%
1,121,068
-145,982
-12% -$22.2M
CP icon
57
Canadian Pacific Kansas City
CP
$81.2B
$203M 0.5%
2,375,095
-1,053,992
-31% -$86.7M
FRPT icon
58
Freshpet
FRPT
$3.46B
$201M 0.49%
1,466,528
-273,827
-16% -$35.9M
PRMW
59
DELISTED
Primo Water Corporation
PRMW
$197M 0.49%
7,792,292
+6,284,013
+417% +$140M
NICE icon
60
Nice
NICE
$5.71B
$196M 0.48%
1,129,532
-23,496
-2% -$4.03M
INSP icon
61
Inspire Medical Systems
INSP
$1.68B
$191M 0.47%
906,349
+135,936
+18% +$23.6M
PEN icon
62
Penumbra
PEN
$12.8B
$191M 0.47%
981,309
+156,330
+19% +$29.5M
FLYW icon
63
Flywire
FLYW
$2.1B
$190M 0.47%
11,575,864
-155,926
-1% -$2.72M
PODD icon
64
Insulet
PODD
$9.93B
$188M 0.46%
809,523
-132,731
-14% -$27.3M
TYL icon
65
Tyler Technologies
TYL
$12.9B
$187M 0.46%
319,672
-135,085
-30% -$76.1M
CGNX icon
66
Cognex
CGNX
$10.3B
$186M 0.46%
4,586,121
+567,582
+14% +$24.2M
WSC icon
67
WillScot Mobile Mini Holdings
WSC
$4.08B
$184M 0.45%
4,890,676
+246,775
+5% +$9.42M
CCK icon
68
Crown Holdings
CCK
$13.1B
$184M 0.45%
1,916,030
-734,853
-28% -$63.3M
PLNT icon
69
Planet Fitness
PLNT
$3.67B
$182M 0.45%
2,243,982
-25,044
-1% -$1.96M
LSCC icon
70
Lattice Semiconductor
LSCC
$18.3B
$180M 0.44%
3,394,871
+231,807
+7% +$11.9M
WMS icon
71
Advanced Drainage Systems
WMS
$10.5B
$180M 0.44%
1,143,479
-286,612
-20% -$44.8M
LRN icon
72
Stride
LRN
$3.22B
$178M 0.44%
2,091,333
-30,769
-1% -$2.38M
ELF icon
73
e.l.f. Beauty
ELF
$5.53B
$178M 0.44%
1,636,028
+123,848
+8% +$19.4M
INSM icon
74
Insmed
INSM
$29.4B
$177M 0.44%
2,420,908
-1,048,820
-30% -$77.4M
MANH icon
75
Manhattan Associates
MANH
$11.2B
$176M 0.43%
+624,427
New +$159M
1 2
3
4 5

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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.