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
+5.41%
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
$40.9B
AUM Growth
+$405M
Cap. Flow
-$285M
Cap. Flow %
-0.7%
Top 10 Hldgs %
27.41%
Holding
463
New
51
Increased
220
Reduced
159
Closed
30

Top Buys

Rank Stock Value
1
PRMB
Primo Brands
PRMB
+$331M
2
YUMC icon
Yum China
YUMC
+$240M
3
TLN
Talen Energy Corp
TLN
+$232M
4
MLI icon
Mueller Industries
MLI
+$206M
5
BAM icon
Brookfield Asset Management
BAM
+$203M

Top Sells

Rank Stock Value
1
ISRG icon
Intuitive Surgical
ISRG
+$315M
2
ICLR icon
Icon
ICLR
+$294M
3
ZTS icon
Zoetis
ZTS
+$230M
4
BWXT icon
BWX Technologies
BWXT
+$222M
5
PRMW
Primo Water Corporation
PRMW
+$197M

Sector Composition

Rank Sector Weight
1 Technology 34.12%
2 Consumer Discretionary 14.8%
3 Financials 12.22%
4 Healthcare 11.93%
5 Industrials 10.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TMCI icon
301
Treace Medical Concepts
TMCI
$309M
$21.9M 0.05%
2,938,848
+546,787
+23% +$3.66M
SNPS icon
302
Synopsys
SNPS
$79B
$21.7M 0.05%
44,742
-15,940
-26% -$8.33M
RSI icon
303
Rush Street Interactive
RSI
$2.81B
$21.6M 0.05%
+1,576,898
New +$19.2M
MLKN icon
304
MillerKnoll
MLKN
$1.64B
$21.6M 0.05%
956,425
+23,933
+3% +$578K
TME icon
305
Tencent Music
TME
$13.9B
$21.6M 0.05%
+1,902,836
New +$22.6M
BAH icon
306
Booz Allen Hamilton
BAH
$9.43B
$21.5M 0.05%
166,769
-65,404
-28% -$10.2M
BROS icon
307
Dutch Bros
BROS
$8.91B
$20.6M 0.05%
392,513
+53,838
+16% +$2.38M
BLMN icon
308
Bloomin' Brands
BLMN
$975M
$20.1M 0.05%
1,649,084
+18,525
+1% +$266K
TFII icon
309
TFI International
TFII
$12B
$19.8M 0.05%
146,657
-136,563
-48% -$19.4M
GOGO icon
310
Gogo Inc
GOGO
$383M
$19.6M 0.05%
2,424,378
+330,961
+16% +$2.47M
JBI icon
311
Janus International
JBI
$664M
$19.5M 0.05%
2,654,861
+46,939
+2% +$387K
ULTA icon
312
Ulta Beauty
ULTA
$22.9B
$19.5M 0.05%
44,740
-36,437
-45% -$14.1M
BBAR icon
313
BBVA Argentina
BBAR
$3.25B
$19.4M 0.05%
+1,020,278
New +$15.5M
PRCT icon
314
Procept Biorobotics
PRCT
$1.22B
$19.3M 0.05%
239,285
+26,783
+13% +$2.29M
PBF icon
315
PBF Energy
PBF
$8.34B
$18.9M 0.05%
712,916
+13,573
+2% +$413K
INVX
316
Innovex International
INVX
$2.13B
$18.8M 0.05%
1,345,885
+24,944
+2% +$374K
VMC icon
317
Vulcan Materials
VMC
$36.3B
$18.3M 0.04%
71,235
-77,276
-52% -$20.8M
ADT icon
318
ADT
ADT
$5.34B
$18.1M 0.04%
2,620,188
-468,876
-15% -$3.42M
PRAA icon
319
PRA Group
PRAA
$737M
$17.9M 0.04%
856,558
-171,068
-17% -$3.65M
PAM icon
320
Pampa Energía
PAM
$4.26B
$17.6M 0.04%
200,078
+43,257
+28% +$3.29M
LOCO icon
321
El Pollo Loco
LOCO
$463M
$16.2M 0.04%
1,406,454
+34,399
+3% +$434K
CBRL icon
322
Cracker Barrel
CBRL
$1.31B
$16M 0.04%
303,550
+5,803
+2% +$287K
AMAT icon
323
Applied Materials
AMAT
$435B
$15.9M 0.04%
97,819
-14,074
-13% -$2.55M
TNET icon
324
TriNet
TNET
$3.07B
$15.9M 0.04%
+174,893
New +$16.2M
RYZ
325
Ryerson Holding Corp
RYZ
$1.5B
$15.8M 0.04%
855,246
+17,075
+2% +$383K
11 12
13
14 15

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 2024 Portfolio in Review

As of Q4 2024, William Blair Investment Management held 463 positions worth $40.9B, up 1% from $40.5B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair Investment Management's Q4 2024 filing shows 51 new, 220 increased, 159 reduced and 30 closed positions. Its largest new stake was Primo Brands: 11,161,870 shares worth $343M. The largest sale was Intuitive Surgical, an estimated $315M.

By sector, the portfolio is most concentrated in Technology at 34% of assets, down from 34% a quarter earlier, followed by Consumer Discretionary and Financials.

  • William Blair Investment Management's largest Q4 2024 buy was Primo Brands: 11,161,870 shares worth $343M.
  • William Blair Investment Management added most to West Pharmaceutical in Q4 2024, an estimated $177M increase.
  • William Blair Investment Management's biggest Q4 2024 reduction was Intuitive Surgical, cutting an estimated $315M.
  • William Blair Investment Management fully exited Primo Water Corporation in Q4 2024, selling an estimated $197M.
  • William Blair Investment Management's ten largest holdings make up 27% of its $40.9B portfolio in Q4 2024.
  • William Blair Investment Management opened 51 new positions and closed 30 in Q4 2024.
  • William Blair Investment Management's portfolio value rose 1% quarter-over-quarter to $40.9B.

Based on William Blair Investment Management's 13F filing for Q4 2024, filed 10 Feb 2025.