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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
+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
IDA icon
176
Idacorp
IDA
$8.17B
$41.5M 0.1%
380,068
-597
-0.2% -$65.6K
TPH
177
DELISTED
Tri Pointe Homes
TPH
$41.3M 0.1%
1,138,547
+27,691
+2% +$1.15M
COLD icon
178
Americold
COLD
$4.33B
$40.3M 0.1%
1,883,041
+268,520
+17% +$6.5M
WMT icon
179
Walmart Inc
WMT
$917B
$40.1M 0.1%
443,932
-14,564
-3% -$1.26M
BANC icon
180
Banc of California
BANC
$3.14B
$39.5M 0.1%
2,556,614
+62,269
+2% +$983K
EFSC icon
181
Enterprise Financial Services Corp
EFSC
$2.42B
$39.2M 0.1%
694,316
+16,922
+2% +$947K
ADTN icon
182
Adtran
ADTN
$663M
$38.7M 0.09%
4,647,155
+114,986
+3% +$849K
MMS icon
183
Maximus
MMS
$2.86B
$38.7M 0.09%
518,469
+94,067
+22% +$7.67M
VRNT
184
DELISTED
Verint Systems
VRNT
$38.6M 0.09%
1,406,682
+32,682
+2% +$816K
AL
185
DELISTED
Air Lease Corp
AL
$38.5M 0.09%
799,478
+194,189
+32% +$9.16M
ESRT icon
186
Empire State Realty Trust
ESRT
$836M
$38.4M 0.09%
3,720,315
+90,758
+3% +$984K
AVT icon
187
Avnet
AVT
$7.96B
$38.4M 0.09%
733,566
+17,685
+2% +$959K
ELS icon
188
Equity Lifestyle Properties
ELS
$12.6B
$38.1M 0.09%
572,281
-2,068
-0.4% -$143K
ODFL icon
189
Old Dominion Freight Line
ODFL
$45B
$38M 0.09%
215,373
-22,454
-9% -$4.57M
FCPT icon
190
Four Corners Property Trust
FCPT
$2.77B
$38M 0.09%
1,399,446
+33,450
+2% +$954K
YOU icon
191
Clear Secure
YOU
$4.68B
$37.7M 0.09%
+1,415,044
New +$42.7M
UMH
192
UMH Properties
UMH
$1.41B
$37.6M 0.09%
1,992,420
+48,480
+2% +$925K
INFY icon
193
Infosys
INFY
$49.5B
$37.6M 0.09%
1,713,529
+59,200
+4% +$1.32M
ESTA icon
194
Establishment Labs
ESTA
$2.29B
$37.4M 0.09%
812,825
+248,888
+44% +$10.8M
CRH icon
195
CRH
CRH
$65.3B
$37.3M 0.09%
403,052
+362,899
+904% +$34.9M
ZTS icon
196
Zoetis
ZTS
$30.5B
$37.3M 0.09%
228,650
-1,284,619
-85% -$230M
HUBG icon
197
HUB Group
HUBG
$2.57B
$37.3M 0.09%
835,959
+20,259
+2% +$945K
ICE icon
198
Intercontinental Exchange
ICE
$85.3B
$37.2M 0.09%
249,696
-49,072
-16% -$7.77M
RNST icon
199
Renasant Corp
RNST
$3.99B
$37M 0.09%
+1,034,597
New +$36.5M
USLM icon
200
United States Lime & Minerals
USLM
$3.43B
$36.7M 0.09%
276,191
-17,949
-6% -$2.28M
6 7
8
9 10

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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.