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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+8.82%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
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
ZTS icon
26
Zoetis
ZTS
$31.1B
$296M 0.73%
1,513,269
+83,975
+6% +$15.5M
CHE icon
27
Chemed
CHE
$7.02B
$292M 0.72%
485,782
+10,410
+2% +$5.9M
EXAS
28
DELISTED
Exact Sciences
EXAS
$292M 0.72%
4,284,953
+405,758
+10% +$22.9M
ITUB icon
29
Itaú Unibanco
ITUB
$82.7B
$286M 0.71%
48,779,839
+5,806,812
+14% +$32.7M
TXN icon
30
Texas Instruments
TXN
$257B
$285M 0.7%
1,379,459
-287,427
-17% -$57.8M
DOCS icon
31
Doximity
DOCS
$4.65B
$282M 0.7%
6,470,216
+66,148
+1% +$2.21M
ORLY icon
32
O'Reilly Automotive
ORLY
$74.9B
$275M 0.68%
3,585,315
+195,270
+6% +$14.3M
PANW icon
33
Palo Alto Networks
PANW
$313B
$271M 0.67%
1,585,398
-415,624
-21% -$70M
TRU icon
34
TransUnion
TRU
$15.4B
$270M 0.67%
2,581,245
+2,198,113
+574% +$198M
MRCY icon
35
Mercury Systems
MRCY
$6.55B
$270M 0.67%
7,299,512
+883,063
+14% +$31.1M
DT icon
36
Dynatrace
DT
$14.4B
$267M 0.66%
4,998,290
+570,567
+13% +$27.2M
CWST icon
37
Casella Waste Systems
CWST
$5.89B
$264M 0.65%
2,652,112
-14,637
-0.5% -$1.52M
RACE icon
38
Ferrari
RACE
$72.1B
$263M 0.65%
559,132
+49,566
+10% +$22.2M
CWAN
39
DELISTED
Clearwater Analytics
CWAN
$262M 0.65%
10,383,182
-47,612
-0.5% -$1.07M
BFAM icon
40
Bright Horizons
BFAM
$3.76B
$258M 0.64%
1,837,692
-29,326
-2% -$3.79M
CCJ icon
41
Cameco
CCJ
$43B
$255M 0.63%
5,347,865
+1,187,856
+29% +$51.8M
LRCX icon
42
Lam Research
LRCX
$390B
$253M 0.62%
3,094,820
+127,010
+4% +$11M
EXLS icon
43
EXL Service
EXLS
$5.29B
$247M 0.61%
6,480,695
+1,382,770
+27% +$48.3M
A icon
44
Agilent Technologies
A
$42.2B
$247M 0.61%
1,661,918
+634,567
+62% +$86.9M
SN icon
45
SharkNinja
SN
$26.4B
$243M 0.6%
2,236,708
-297,976
-12% -$25.9M
MNST icon
46
Monster Beverage
MNST
$89.2B
$231M 0.57%
8,859,196
-356,460
-4% -$8.83M
ACHC icon
47
Acadia Healthcare
ACHC
$2.9B
$230M 0.57%
3,629,704
+114,240
+3% +$8.25M
EG icon
48
Everest Group
EG
$14B
$228M 0.56%
581,787
+1,616
+0.3% +$616K
WAL icon
49
Western Alliance Bancorporation
WAL
$8.89B
$227M 0.56%
2,624,999
-188,824
-7% -$14.5M
MLM icon
50
Martin Marietta Materials
MLM
$33.3B
$224M 0.55%
415,475
+40,664
+11% +$22M
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.