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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
+15.93%
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
$34.4B
AUM Growth
+$4.27B
Cap. Flow
+$63.7M
Cap. Flow %
0.19%
Top 10 Hldgs %
22.06%
Holding
433
New
35
Increased
127
Reduced
244
Closed
27

Top Buys

Rank Stock Value
1
PDD icon
Pinduoduo
PDD
+$279M
2
CRH icon
CRH
CRH
+$151M
3
CWAN
Clearwater Analytics
CWAN
+$143M
4
EXLS icon
EXL Service
EXLS
+$102M
5
A icon
Agilent Technologies
A
+$76.4M

Top Sells

Rank Stock Value
1
PFGC icon
Performance Food Group
PFGC
+$156M
2
PXD
Pioneer Natural Resource Co.
PXD
+$101M
3
CP icon
Canadian Pacific Kansas City
CP
+$97.2M
4
WOLF icon
Wolfspeed
WOLF
+$86.6M
5
AXON
Axon Enterprise
AXON
+$79.8M

Sector Composition

Rank Sector Weight
1 Technology 27.13%
2 Healthcare 15.5%
3 Consumer Discretionary 15.19%
4 Industrials 14.17%
5 Financials 9.11%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MSFT icon
1
Microsoft
MSFT
$3.72T
$1.47B 4.29%
3,922,394
+119,738
+3% +$42.6M
TSM icon
2
TSMC
TSM
$2.18T
$1.17B 3.4%
11,229,201
-550,943
-5% -$52.5M
GOOGL icon
3
Alphabet (Google) Class A
GOOGL
$4.34T
$978M 2.84%
6,997,711
+464,435
+7% +$62.4M
AMZN icon
4
Amazon
AMZN
$2.96T
$878M 2.55%
5,778,239
+325,984
+6% +$45.7M
MELI icon
5
Mercado Libre
MELI
$91.8B
$589M 1.71%
374,825
-36,485
-9% -$51.7M
MA icon
6
Mastercard
MA
$492B
$575M 1.67%
1,348,512
+67,287
+5% +$27M
NVDA icon
7
NVIDIA
NVDA
$5.38T
$537M 1.56%
10,843,350
+1,095,110
+11% +$50.8M
LIN icon
8
Linde
LIN
$226B
$507M 1.48%
1,235,503
-106,506
-8% -$42M
CG icon
9
Carlyle Group
CG
$17.5B
$452M 1.31%
11,097,795
+2,220,367
+25% +$73.1M
UNH icon
10
UnitedHealth
UNH
$371B
$424M 1.23%
804,782
-91,035
-10% -$48.6M
BWXT icon
11
BWX Technologies
BWXT
$15.6B
$356M 1.03%
4,634,887
-993,980
-18% -$76.4M
EHC icon
12
Encompass Health
EHC
$12.5B
$348M 1.01%
5,218,171
-458,208
-8% -$29.7M
PDD icon
13
Pinduoduo
PDD
$130B
$336M 0.98%
+2,300,793
New +$279M
CP icon
14
Canadian Pacific Kansas City
CP
$80.4B
$335M 0.98%
4,241,766
-1,328,160
-24% -$97.2M
ACN icon
15
Accenture
ACN
$107B
$334M 0.97%
951,930
+54,964
+6% +$17.7M
CRM icon
16
Salesforce
CRM
$157B
$329M 0.96%
1,250,490
+25,799
+2% +$5.84M
ICLR icon
17
Icon
ICLR
$12.5B
$324M 0.94%
1,144,393
+101,228
+10% +$26.2M
INTU icon
18
Intuit
INTU
$89.4B
$304M 0.88%
486,455
+20,443
+4% +$11.3M
LYV icon
19
Live Nation Entertainment
LYV
$42.5B
$304M 0.88%
3,244,811
+573,108
+21% +$49.3M
MMSI icon
20
Merit Medical Systems
MMSI
$5.3B
$288M 0.84%
3,791,089
-104,606
-3% -$7.3M
ISRG icon
21
Intuitive Surgical
ISRG
$134B
$286M 0.83%
848,324
+85,137
+11% +$25.4M
CHE icon
22
Chemed
CHE
$7.17B
$279M 0.81%
476,446
-54,363
-10% -$30.4M
BCO icon
23
Brink's
BCO
$4.59B
$278M 0.81%
3,155,930
-283,573
-8% -$21.8M
LULU icon
24
lululemon athletica
LULU
$14.5B
$274M 0.8%
536,434
-104,555
-16% -$45.2M
ELF icon
25
e.l.f. Beauty
ELF
$5.79B
$270M 0.79%
1,870,753
+446,485
+31% +$51.5M
1
2 3 4 5

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William Blair Investment Management's Q4 2023 Portfolio in Review

As of Q4 2023, William Blair Investment Management held 433 positions worth $34.4B, up 14% from $30.1B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair Investment Management's Q4 2023 filing shows 35 new, 127 increased, 244 reduced and 27 closed positions. Its largest new stake was Pinduoduo: 2,300,793 shares worth $336M. The largest sale was Performance Food Group, an estimated $156M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 26% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q4 2023 buy was Pinduoduo: 2,300,793 shares worth $336M.
  • William Blair Investment Management added most to CRH in Q4 2023, an estimated $151M increase.
  • William Blair Investment Management's biggest Q4 2023 reduction was Performance Food Group, cutting an estimated $156M.
  • William Blair Investment Management fully exited Pioneer Natural Resource Co. in Q4 2023, selling an estimated $101M.
  • William Blair Investment Management's ten largest holdings make up 22% of its $34.4B portfolio in Q4 2023.
  • William Blair Investment Management opened 35 new positions and closed 27 in Q4 2023.
  • William Blair Investment Management's portfolio value rose 14% quarter-over-quarter to $34.4B.

Based on William Blair Investment Management's 13F filing for Q4 2023, filed 9 Feb 2024.