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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
-2.74%
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
$30.1B
AUM Growth
-$1.09B
Cap. Flow
+$378M
Cap. Flow %
1.26%
Top 10 Hldgs %
21.93%
Holding
430
New
35
Increased
162
Reduced
197
Closed
32

Top Buys

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$192M
2
SMCI icon
Super Micro Computer
SMCI
+$143M
3
LSCC icon
Lattice Semiconductor
LSCC
+$129M
4
CG icon
Carlyle Group
CG
+$114M
5
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$111M

Top Sells

Rank Stock Value
1
DEN
Denbury Inc.
DEN
+$179M
2
PLNT icon
Planet Fitness
PLNT
+$170M
3
MLM icon
Martin Marietta Materials
MLM
+$141M
4
BLDR icon
Builders FirstSource
BLDR
+$135M
5
CCJ icon
Cameco
CCJ
+$123M

Sector Composition

Rank Sector Weight
1 Technology 25.88%
2 Industrials 15.76%
3 Healthcare 15.67%
4 Consumer Discretionary 13.72%
5 Financials 8.88%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MSFT icon
1
Microsoft
MSFT
$3.71T
$1.2B 3.99%
3,802,656
+314,571
+9% +$104M
TSM icon
2
TSMC
TSM
$2.18T
$1.02B 3.4%
11,780,144
+355,609
+3% +$33.6M
GOOGL icon
3
Alphabet (Google) Class A
GOOGL
$4.33T
$855M 2.84%
6,533,276
+856,170
+15% +$111M
AMZN icon
4
Amazon
AMZN
$2.96T
$693M 2.3%
5,452,255
+690,650
+15% +$92.5M
MELI icon
5
Mercado Libre
MELI
$92.3B
$521M 1.73%
411,310
+23,699
+6% +$30.1M
MA icon
6
Mastercard
MA
$493B
$507M 1.69%
1,281,225
+51,716
+4% +$20.8M
LIN icon
7
Linde
LIN
$226B
$500M 1.66%
1,342,009
-67,613
-5% -$25.7M
UNH icon
8
UnitedHealth
UNH
$370B
$452M 1.5%
895,817
+132,036
+17% +$65M
NVDA icon
9
NVIDIA
NVDA
$5.42T
$424M 1.41%
9,748,240
+4,275,340
+78% +$192M
BWXT icon
10
BWX Technologies
BWXT
$15.6B
$422M 1.4%
5,628,867
-159,326
-3% -$11.5M
CP icon
11
Canadian Pacific Kansas City
CP
$80.5B
$414M 1.38%
5,569,926
-118,162
-2% -$9.37M
EHC icon
12
Encompass Health
EHC
$12.4B
$381M 1.27%
5,676,379
+342,512
+6% +$23.6M
GTLS
13
DELISTED
Chart Industries
GTLS
$287M 0.95%
1,696,411
-84,653
-5% -$14.2M
CCK icon
14
Crown Holdings
CCK
$13.1B
$279M 0.93%
3,151,058
-161,849
-5% -$14.5M
CHE icon
15
Chemed
CHE
$7.22B
$276M 0.92%
530,809
-29,362
-5% -$15.3M
ACN icon
16
Accenture
ACN
$108B
$275M 0.92%
896,966
+93,478
+12% +$29.5M
AXON
17
Axon Enterprise
AXON
$46.4B
$272M 0.9%
1,366,267
+2,378
+0.2% +$468K
MMSI icon
18
Merit Medical Systems
MMSI
$5.32B
$269M 0.89%
3,895,695
+520,423
+15% +$37.5M
CG icon
19
Carlyle Group
CG
$17.2B
$268M 0.89%
8,877,428
+3,524,794
+66% +$114M
ICLR icon
20
Icon
ICLR
$12.7B
$257M 0.85%
1,043,165
-16,491
-2% -$4.16M
MRCY icon
21
Mercury Systems
MRCY
$6.52B
$250M 0.83%
6,749,562
+1,376,905
+26% +$50.8M
BCO icon
22
Brink's
BCO
$4.62B
$250M 0.83%
3,439,503
-188,820
-5% -$13.6M
CRM icon
23
Salesforce
CRM
$158B
$248M 0.83%
1,224,691
+223,430
+22% +$48.3M
CF icon
24
CF Industries
CF
$17.3B
$248M 0.82%
2,891,675
-3,958
-0.1% -$313K
LULU icon
25
lululemon athletica
LULU
$14.6B
$247M 0.82%
640,989
+76,282
+14% +$29.1M
1
2 3 4 5

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William Blair Investment Management's Q3 2023 Portfolio in Review

As of Q3 2023, William Blair Investment Management held 430 positions worth $30.1B, down 3.5% from $31.2B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair Investment Management's Q3 2023 filing shows 35 new, 162 increased, 197 reduced and 32 closed positions. Its largest new stake was Super Micro Computer: 5,132,780 shares worth $141M. The largest sale was Denbury Inc., an estimated $179M.

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

  • William Blair Investment Management's largest Q3 2023 buy was Super Micro Computer: 5,132,780 shares worth $141M.
  • William Blair Investment Management added most to NVIDIA in Q3 2023, an estimated $192M increase.
  • William Blair Investment Management's biggest Q3 2023 reduction was Martin Marietta Materials, cutting an estimated $141M.
  • William Blair Investment Management fully exited Denbury Inc. in Q3 2023, selling an estimated $179M.
  • William Blair Investment Management's ten largest holdings make up 22% of its $30.1B portfolio in Q3 2023.
  • William Blair Investment Management opened 35 new positions and closed 32 in Q3 2023.
  • William Blair Investment Management's portfolio value fell 3.5% quarter-over-quarter to $30.1B.

Based on William Blair Investment Management's 13F filing for Q3 2023, filed 9 Nov 2023.