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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
-2.74%
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
$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
ETSY icon
351
Etsy
ETSY
$7.31B
$1.17M ﹤0.01%
18,111
-494
-3% -$39K
APTV icon
352
Aptiv
APTV
$10.1B
$799K ﹤0.01%
8,100
+1,577
+24% +$163K
CRH icon
353
CRH
CRH
$65.2B
$696K ﹤0.01%
+12,708
New +$722K
A icon
354
Agilent Technologies
A
$41.9B
$662K ﹤0.01%
+5,918
New +$709K
JCI icon
355
Johnson Controls International
JCI
$92.6B
$643K ﹤0.01%
12,089
-4,019
-25% -$248K
FERG icon
356
Ferguson
FERG
$47.4B
$533K ﹤0.01%
3,222
– –
ACGL icon
357
Arch Capital
ACGL
$33.2B
$519K ﹤0.01%
6,508
+2,348
+56% +$183K
FLS icon
358
Flowserve
FLS
$10.3B
$489K ﹤0.01%
12,306
+4,700
+62% +$181K
JBL icon
359
Jabil
JBL
$38.4B
$479K ﹤0.01%
3,776
+855
+29% +$93.5K
SNA icon
360
Snap-on
SNA
$21.1B
$472K ﹤0.01%
1,851
+612
+49% +$165K
RL icon
361
Ralph Lauren
RL
$23.6B
$458K ﹤0.01%
3,944
+1,442
+58% +$175K
ITT icon
362
ITT
ITT
$19.4B
$457K ﹤0.01%
4,670
+1,537
+49% +$151K
FFIV icon
363
F5
FFIV
$24B
$454K ﹤0.01%
2,820
+1,302
+86% +$204K
INGR icon
364
Ingredion
INGR
$6.54B
$446K ﹤0.01%
4,528
+1,646
+57% +$171K
AGCO icon
365
AGCO
AGCO
$7.11B
$436K ﹤0.01%
3,685
-169,566
-98% -$21.5M
LKQ icon
366
LKQ Corp
LKQ
$6.25B
$433K ﹤0.01%
8,748
+3,206
+58% +$172K
HPE icon
367
Hewlett Packard
HPE
$77.8B
$433K ﹤0.01%
24,916
+8,913
+56% +$153K
AYI icon
368
Acuity Brands
AYI
$10.8B
$425K ﹤0.01%
+2,498
New +$408K
TKR icon
369
Timken Company
TKR
$9.03B
$425K ﹤0.01%
5,788
+1,928
+50% +$156K
CHKP icon
370
Check Point Software Technologies
CHKP
$13.2B
$424K ﹤0.01%
3,185
+1,166
+58% +$153K
AXTA icon
371
Axalta
AXTA
$7.98B
$423K ﹤0.01%
+15,734
New +$461K
KNX icon
372
Knight Transportation
KNX
$11.6B
$416K ﹤0.01%
8,291
+2,808
+51% +$156K
GOOG icon
373
Alphabet (Google) Class C
GOOG
$4.19T
$410K ﹤0.01%
3,111
+644
+26% +$83.7K
LH icon
374
Labcorp
LH
$26.2B
$397K ﹤0.01%
+1,973
New +$416K
NVST icon
375
Envista
NVST
$4.61B
$384K ﹤0.01%
13,756
+6,565
+91% +$213K
13 14
15
16 17

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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.