We are live on ! Find out more
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
+15.93%
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
$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
TMO icon
276
Thermo Fisher Scientific
TMO
$223B
$23.1M 0.07%
43,452
-39,106
-47% -$18.9M
ADT icon
277
ADT
ADT
$5.34B
$23M 0.07%
3,377,869
-364,004
-10% -$2.27M
AAMI
278
Acadian Asset Management
AAMI
$3.27B
$23M 0.07%
1,201,403
-23,655
-2% -$418K
DCO icon
279
Ducommun
DCO
$3.04B
$22.8M 0.07%
437,400
-41,606
-9% -$2.03M
TGLS icon
280
Tecnoglass Holdings Inc.
TGLS
$1.86B
$22.2M 0.06%
+485,177
New +$17.5M
ALHC icon
281
Alignment Healthcare
ALHC
$2.8B
$21.7M 0.06%
2,516,788
+603,329
+32% +$4.41M
IBN icon
282
ICICI Bank
IBN
$107B
$21.5M 0.06%
902,328
+160,310
+22% +$3.69M
AMAT icon
283
Applied Materials
AMAT
$435B
$21.4M 0.06%
+132,028
New +$19.4M
OPLN
284
Openlane
OPLN
$4.34B
$21.2M 0.06%
1,431,762
-65,226
-4% -$948K
GDEN
285
DELISTED
Golden Entertainment
GDEN
$21.1M 0.06%
528,719
+74,163
+16% +$2.69M
LECO icon
286
Lincoln Electric
LECO
$15.6B
$21M 0.06%
96,583
-10,043
-9% -$1.94M
PDFS icon
287
PDF Solutions
PDFS
$2.19B
$20.8M 0.06%
647,937
+92,033
+17% +$2.79M
OSW icon
288
OneSpaWorld
OSW
$2.7B
$20.6M 0.06%
1,462,522
+217,847
+18% +$2.53M
OABI icon
289
OmniAb
OABI
$497M
$20.6M 0.06%
3,337,241
+474,585
+17% +$2.33M
VCYT icon
290
Veracyte
VCYT
$3.59B
$20.2M 0.06%
735,077
+104,946
+17% +$2.53M
QNST icon
291
QuinStreet
QNST
$1.19B
$19.5M 0.06%
1,518,703
-663,662
-30% -$7.48M
GOGO icon
292
Gogo Inc
GOGO
$383M
$19.3M 0.06%
1,905,796
+271,933
+17% +$2.89M
STEP icon
293
StepStone Group
STEP
$3.96B
$19.2M 0.06%
602,777
+186,774
+45% +$5.28M
TFII icon
294
TFI International
TFII
$12B
$19.1M 0.06%
+140,262
New +$16.6M
ONT
295
Onterris Inc
ONT
$576M
$18.8M 0.05%
585,493
+83,860
+17% +$2.41M
GLDD
296
DELISTED
Great Lakes Dredge & Dock
GLDD
$18.8M 0.05%
2,446,572
-49,793
-2% -$363K
MIRM icon
297
Mirum Pharmaceuticals
MIRM
$6.04B
$18.4M 0.05%
621,778
+88,085
+17% +$2.67M
COCO icon
298
Vita Coco
COCO
$3.85B
$18M 0.05%
700,004
-51,327
-7% -$1.39M
CGNT icon
299
Cognyte Software
CGNT
$675M
$17.8M 0.05%
2,765,407
-55,588
-2% -$278K
FMC icon
300
FMC
FMC
$1.28B
$17.7M 0.05%
281,253
+12,623
+5% +$732K
10 11
12
13 14

Similar funds

BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
GAM
Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Public Sector Pension Investment Board (PSP Investments)
Public Sector Pension Investment Board (PSP Investments) Montreal, Quebec, Canada $32.1B AUM 31.84% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
Treasurer of the State of North Carolina
Treasurer of the State of North Carolina Raleigh, North Carolina $31.8B AUM 28.93% 1-Year Est. Return

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.