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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
+11.26%
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
$28.7B
AUM Growth
+$2.56B
Cap. Flow
+$530M
Cap. Flow %
1.85%
Top 10 Hldgs %
19.55%
Holding
425
New
24
Increased
254
Reduced
112
Closed
32

Top Buys

Rank Stock Value
1
RACE icon
Ferrari
RACE
+$191M
2
TSM icon
TSMC
TSM
+$128M
3
KOS icon
Kosmos Energy
KOS
+$111M
4
FIVE icon
Five Below
FIVE
+$111M
5
AMD icon
Advanced Micro Devices
AMD
+$86.5M

Top Sells

Rank Stock Value
1
HALO icon
Halozyme
HALO
+$211M
2
SYK icon
Stryker
SYK
+$153M
3
WH icon
Wyndham Hotels & Resorts
WH
+$113M
4
FTI icon
TechnipFMC
FTI
+$92.8M
5
AZTA icon
Azenta
AZTA
+$78.7M

Sector Composition

Rank Sector Weight
1 Technology 25.27%
2 Industrials 16.92%
3 Consumer Discretionary 15.22%
4 Healthcare 14.65%
5 Financials 9.04%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TMCI icon
251
Treace Medical Concepts
TMCI
$309M
$24.3M 0.08%
962,927
+234,160
+32% +$5.5M
SBCF icon
252
Seacoast Banking Corp of Florida
SBCF
$3.44B
$24.1M 0.08%
1,018,439
+2,554
+0.3% +$76K
EAF icon
253
GrafTech
EAF
$201M
$23.8M 0.08%
488,996
+160,034
+49% +$8.66M
CNDT icon
254
Conduent
CNDT
$241M
$23.7M 0.08%
6,909,987
+46,462
+0.7% +$191K
HWC icon
255
Hancock Whitney
HWC
$6.34B
$23.6M 0.08%
648,568
+481,635
+289% +$22.5M
PLXS icon
256
Plexus
PLXS
$7.25B
$23.5M 0.08%
240,862
+821
+0.3% +$82.3K
COCO icon
257
Vita Coco
COCO
$3.85B
$23.5M 0.08%
1,196,237
+452,746
+61% +$7.09M
MODV
258
DELISTED
ModivCare
MODV
$23.4M 0.08%
278,439
+1,585
+0.6% +$152K
VERX icon
259
Vertex
VERX
$2B
$22.8M 0.08%
1,101,712
-226,809
-17% -$3.5M
AUDC icon
260
AudioCodes
AUDC
$257M
$22.8M 0.08%
1,511,469
+9,950
+0.7% +$169K
EXP icon
261
Eagle Materials
EXP
$6.47B
$22.5M 0.08%
153,558
+20,293
+15% +$2.88M
VMC icon
262
Vulcan Materials
VMC
$36.3B
$22.5M 0.08%
131,301
+124,626
+1,867% +$22.1M
QNST icon
263
QuinStreet
QNST
$1.19B
$22.3M 0.08%
1,406,345
+409,876
+41% +$6.48M
DLX icon
264
Deluxe
DLX
$1.09B
$22.3M 0.08%
1,392,871
+10,241
+0.7% +$187K
HASI icon
265
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.37B
$22.2M 0.08%
777,319
+102,118
+15% +$3.23M
SQM icon
266
Sociedad Química y Minera de Chile
SQM
$20.4B
$22.2M 0.08%
273,419
+12,288
+5% +$1.06M
GXO icon
267
GXO Logistics
GXO
$5.52B
$22M 0.08%
+436,665
New +$21.7M
PPBI
268
DELISTED
Pacific Premier Bancorp
PPBI
$22M 0.08%
915,636
+3,645
+0.4% +$110K
MWA icon
269
Mueller Water Products
MWA
$4.09B
$21.7M 0.08%
1,558,189
-54,090
-3% -$704K
AGCO icon
270
AGCO
AGCO
$7.11B
$21.6M 0.08%
159,845
+48,466
+44% +$6.55M
OPLN
271
Openlane
OPLN
$4.34B
$21.6M 0.08%
1,579,155
-5,451
-0.3% -$75.6K
CHX
272
DELISTED
ChampionX
CHX
$21.5M 0.08%
793,403
+62,613
+9% +$1.87M
PRO
273
DELISTED
PROS Holdings
PRO
$21.4M 0.07%
779,391
+61,515
+9% +$1.6M
VITL icon
274
Vital Farms
VITL
$495M
$21.3M 0.07%
1,394,440
+109,105
+8% +$1.73M
COLB icon
275
Columbia Banking Systems
COLB
$9.12B
$21.1M 0.07%
984,692
+232,833
+31% +$6.47M
9 10
11
12 13

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William Blair Investment Management's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair Investment Management held 425 positions worth $28.7B, up 9.8% from $26.1B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q1 2023 filing shows 24 new, 254 increased, 112 reduced and 32 closed positions. Its largest new stake was Ferrari: 749,761 shares worth $203M. The largest sale was Halozyme, an estimated $211M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, up from 23% a quarter earlier, followed by Industrials and Consumer Discretionary.

  • William Blair Investment Management's largest Q1 2023 buy was Ferrari: 749,761 shares worth $203M.
  • William Blair Investment Management added most to TSMC in Q1 2023, an estimated $128M increase.
  • William Blair Investment Management's biggest Q1 2023 reduction was Wyndham Hotels & Resorts, cutting an estimated $113M.
  • William Blair Investment Management fully exited Halozyme in Q1 2023, selling an estimated $211M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $28.7B portfolio in Q1 2023.
  • William Blair Investment Management opened 24 new positions and closed 32 in Q1 2023.
  • William Blair Investment Management's portfolio value rose 9.8% quarter-over-quarter to $28.7B.

Based on William Blair Investment Management's 13F filing for Q1 2023, filed 12 May 2023.