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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
+9.84%
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
$31.2B
AUM Growth
+$2.49B
Cap. Flow
+$357M
Cap. Flow %
1.14%
Top 10 Hldgs %
20.4%
Holding
426
New
33
Increased
232
Reduced
127
Closed
31

Top Buys

Rank Stock Value
1
TECH icon
Bio-Techne
TECH
+$186M
2
TYL icon
Tyler Technologies
TYL
+$171M
3
NVDA icon
NVIDIA
NVDA
+$167M
4
NOW icon
ServiceNow
NOW
+$128M
5
BFAM icon
Bright Horizons
BFAM
+$109M

Top Sells

Rank Stock Value
1
PD icon
PagerDuty
PD
+$171M
2
BLDR icon
Builders FirstSource
BLDR
+$157M
3
PYPL icon
PayPal
PYPL
+$135M
4
NATI
National Instruments Corp
NATI
+$122M
5
LECO icon
Lincoln Electric
LECO
+$116M

Sector Composition

Rank Sector Weight
1 Technology 25.63%
2 Industrials 16.13%
3 Healthcare 15.71%
4 Consumer Discretionary 14.7%
5 Financials 8.24%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ISRG icon
51
Intuitive Surgical
ISRG
$142B
$186M 0.6%
542,607
+105,855
+24% +$32M
TYL icon
52
Tyler Technologies
TYL
$13.2B
$185M 0.59%
+445,309
New +$171M
GWRE icon
53
Guidewire Software
GWRE
$14.7B
$185M 0.59%
2,436,460
-708,935
-23% -$54.3M
PFGC icon
54
Performance Food Group
PFGC
$17.9B
$183M 0.59%
3,038,350
-992,161
-25% -$58.4M
NOVT icon
55
Novanta
NOVT
$6.34B
$181M 0.58%
982,983
-76,787
-7% -$12.6M
INTU icon
56
Intuit
INTU
$92B
$181M 0.58%
394,308
-338
-0.1% -$148K
DEN
57
DELISTED
Denbury Inc.
DEN
$179M 0.58%
2,079,761
+30,468
+1% +$2.76M
ENTG icon
58
Entegris
ENTG
$23B
$178M 0.57%
1,603,489
-2,364
-0.1% -$216K
TD icon
59
Toronto Dominion Bank
TD
$201B
$177M 0.57%
2,862,930
-38,079
-1% -$2.29M
HQY icon
60
HealthEquity
HQY
$8.83B
$176M 0.57%
2,792,740
-77,429
-3% -$4.49M
FRPT icon
61
Freshpet
FRPT
$3.45B
$173M 0.56%
2,630,325
+605,618
+30% +$39.7M
CMG icon
62
Chipotle Mexican Grill
CMG
$40.5B
$173M 0.55%
4,040,000
+114,700
+3% +$4.54M
CG icon
63
Carlyle Group
CG
$17.2B
$171M 0.55%
5,352,634
+864,482
+19% +$25.3M
TREX icon
64
Trex
TREX
$5.07B
$171M 0.55%
2,605,197
-5,786
-0.2% -$323K
PLNT icon
65
Planet Fitness
PLNT
$3.62B
$170M 0.54%
2,517,230
+657,366
+35% +$47.1M
GLOB icon
66
Globant
GLOB
$1.68B
$166M 0.53%
924,963
+5,563
+0.6% +$913K
BFAM icon
67
Bright Horizons
BFAM
$3.76B
$159M 0.51%
1,721,647
+1,290,640
+299% +$109M
CGNX icon
68
Cognex
CGNX
$10.6B
$155M 0.5%
2,764,198
+457,242
+20% +$23.7M
NFE icon
69
New Fortress Energy
NFE
$94.1M
$150M 0.48%
5,601,162
+2,229,643
+66% +$64.7M
VEEV icon
70
Veeva Systems
VEEV
$38.4B
$149M 0.48%
753,373
+33,442
+5% +$6.1M
FSV icon
71
FirstService
FSV
$6.3B
$146M 0.47%
946,963
-3,221
-0.3% -$468K
WMS icon
72
Advanced Drainage Systems
WMS
$10.8B
$145M 0.47%
1,275,809
-260,613
-17% -$24.6M
EL icon
73
Estee Lauder
EL
$31.8B
$145M 0.46%
737,332
+162,206
+28% +$34.4M
NOW icon
74
ServiceNow
NOW
$132B
$144M 0.46%
+1,282,080
New +$128M
LRCX icon
75
Lam Research
LRCX
$390B
$144M 0.46%
2,235,900
+1,066,840
+91% +$60.1M
1 2
3
4 5

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William Blair Investment Management's Q2 2023 Portfolio in Review

As of Q2 2023, William Blair Investment Management held 426 positions worth $31.2B, up 8.7% from $28.7B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q2 2023 filing shows 33 new, 232 increased, 127 reduced and 31 closed positions. Its largest new stake was Bio-Techne: 2,314,458 shares worth $189M. The largest sale was PagerDuty, an estimated $171M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Industrials and Healthcare.

  • William Blair Investment Management's largest Q2 2023 buy was Bio-Techne: 2,314,458 shares worth $189M.
  • William Blair Investment Management added most to NVIDIA in Q2 2023, an estimated $167M increase.
  • William Blair Investment Management's biggest Q2 2023 reduction was Builders FirstSource, cutting an estimated $157M.
  • William Blair Investment Management fully exited PagerDuty in Q2 2023, selling an estimated $171M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $31.2B portfolio in Q2 2023.
  • William Blair Investment Management opened 33 new positions and closed 31 in Q2 2023.
  • William Blair Investment Management's portfolio value rose 8.7% quarter-over-quarter to $31.2B.

Based on William Blair Investment Management's 13F filing for Q2 2023, filed 11 Aug 2023.