We are live on ! Find out more
William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+15.93%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
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
POOL icon
26
Pool Corp
POOL
$7.32B
$266M 0.77%
666,757
+60,079
+10% +$21.1M
AXON
27
Axon Enterprise
AXON
$51.7B
$261M 0.76%
1,012,096
-354,171
-26% -$79.8M
PANW icon
28
Palo Alto Networks
PANW
$313B
$261M 0.76%
1,771,160
+144,160
+9% +$19.3M
COST icon
29
Costco
COST
$419B
$260M 0.76%
394,168
-43,333
-10% -$25.7M
NOW icon
30
ServiceNow
NOW
$132B
$259M 0.75%
1,835,390
+96,955
+6% +$12.2M
NFE icon
31
New Fortress Energy
NFE
$94.1M
$257M 0.75%
6,804,882
+529,035
+8% +$18.2M
CCK icon
32
Crown Holdings
CCK
$13.1B
$255M 0.74%
2,769,795
-381,263
-12% -$32.3M
GWRE icon
33
Guidewire Software
GWRE
$14.7B
$253M 0.73%
2,315,969
-34,854
-1% -$3.33M
CWST icon
34
Casella Waste Systems
CWST
$5.89B
$248M 0.72%
2,900,110
-147,155
-5% -$11.8M
DT icon
35
Dynatrace
DT
$14.4B
$246M 0.72%
4,505,582
+670,350
+17% +$33.9M
CPRT icon
36
Copart
CPRT
$27.2B
$245M 0.71%
5,001,567
+1,049,637
+27% +$49.6M
NICE icon
37
Nice
NICE
$5.95B
$242M 0.71%
1,215,412
+198,006
+19% +$35.6M
MRCY icon
38
Mercury Systems
MRCY
$6.55B
$240M 0.7%
6,556,772
-192,790
-3% -$6.96M
ACHC icon
39
Acadia Healthcare
ACHC
$2.9B
$232M 0.67%
2,979,564
-79,352
-3% -$5.87M
MZTI
40
The Marzetti Company
MZTI
$3.15B
$230M 0.67%
1,381,516
+73,904
+6% +$12.4M
ZTS icon
41
Zoetis
ZTS
$31.1B
$229M 0.67%
1,158,687
-69,565
-6% -$12.3M
FRPT icon
42
Freshpet
FRPT
$3.45B
$228M 0.66%
2,629,801
-110,907
-4% -$7.6M
CMG icon
43
Chipotle Mexican Grill
CMG
$40.5B
$224M 0.65%
4,886,950
-219,800
-4% -$9.15M
AMD icon
44
Advanced Micro Devices
AMD
$774B
$218M 0.63%
1,475,831
+99,446
+7% +$11.7M
FIVE icon
45
Five Below
FIVE
$13B
$213M 0.62%
999,752
-35,840
-3% -$6.58M
MNST icon
46
Monster Beverage
MNST
$89.2B
$209M 0.61%
7,249,924
+386,354
+6% +$10.3M
RACE icon
47
Ferrari
RACE
$72.1B
$208M 0.61%
615,323
+4,894
+0.8% +$1.63M
EYE icon
48
National Vision
EYE
$1.77B
$206M 0.6%
9,839,344
-227,204
-2% -$4.03M
PODD icon
49
Insulet
PODD
$10B
$199M 0.58%
918,689
+185,766
+25% +$31.9M
BLDR icon
50
Builders FirstSource
BLDR
$8.08B
$199M 0.58%
1,193,106
-531,668
-31% -$70.7M
1
2
3 4 5

Similar funds

Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
Lord, Abbett & Co
Lord, Abbett & Co Jersey City, New Jersey $30.6B AUM 57.44% 1-Year Est. Return
Eagle Capital Management (New York)
Eagle Capital Management (New York) New York $29.8B AUM 12.13% 1-Year Est. Return
State of Tennessee, Department of Treasury
State of Tennessee, Department of Treasury Nashville, Tennessee $29.8B AUM 29.48% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Ohio Public Employees Retirement System (OPERS)
Ohio Public Employees Retirement System (OPERS) Columbus, Ohio $30.9B AUM 29.72% 1-Year Est. Return
Coatue Management
Coatue Management New York $29.1B AUM 96.54% 1-Year Est. Return
Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $29B AUM 30.2% 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.