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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
-18.41%
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
$27B
AUM Growth
-$6.49B
Cap. Flow
+$233M
Cap. Flow %
0.86%
Top 10 Hldgs %
17.57%
Holding
465
New
24
Increased
112
Reduced
263
Closed
62

Top Buys

Rank Stock Value
1
LIN icon
Linde
LIN
+$146M
2
MSFT icon
Microsoft
MSFT
+$142M
3
WOOF icon
Petco
WOOF
+$138M
4
POOL icon
Pool Corp
POOL
+$121M
5
CP icon
Canadian Pacific Kansas City
CP
+$120M

Top Sells

Rank Stock Value
1
TECH icon
Bio-Techne
TECH
+$206M
2
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$155M
3
TSM icon
TSMC
TSM
+$127M
4
AMED
Amedisys
AMED
+$124M
5
NFLX icon
Netflix
NFLX
+$99M

Sector Composition

Rank Sector Weight
1 Technology 25.29%
2 Healthcare 16.5%
3 Industrials 16.08%
4 Consumer Discretionary 14.5%
5 Financials 10.23%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AVLR
76
DELISTED
Avalara, Inc.
AVLR
$127M 0.47%
1,803,089
+389,857
+28% +$32.1M
INSP icon
77
Inspire Medical Systems
INSP
$1.71B
$121M 0.45%
664,391
-89,694
-12% -$17.9M
PEN icon
78
Penumbra
PEN
$12.9B
$121M 0.45%
972,675
+113,992
+13% +$18.1M
SYK icon
79
Stryker
SYK
$134B
$120M 0.45%
603,597
+106,749
+21% +$25.1M
RGEN icon
80
Repligen
RGEN
$9.3B
$119M 0.44%
+733,086
New +$116M
NOVT icon
81
Novanta
NOVT
$6.34B
$119M 0.44%
981,070
-19,302
-2% -$2.43M
FSV icon
82
FirstService
FSV
$6.3B
$119M 0.44%
980,390
-20,742
-2% -$2.61M
APO icon
83
Apollo Global Management
APO
$82.8B
$118M 0.44%
2,439,161
+350,087
+17% +$19M
CP icon
84
Canadian Pacific Kansas City
CP
$80.8B
$116M 0.43%
+1,662,437
New +$120M
CERT icon
85
Certara
CERT
$1.24B
$115M 0.43%
5,375,154
-161,854
-3% -$3.2M
BFAM icon
86
Bright Horizons
BFAM
$3.76B
$115M 0.43%
1,359,215
-359,963
-21% -$35.8M
WOOF icon
87
Petco
WOOF
$782M
$112M 0.42%
+7,619,542
New +$138M
PODD icon
88
Insulet
PODD
$10B
$109M 0.41%
502,120
-11,793
-2% -$2.68M
MKSI icon
89
MKS Inc
MKSI
$19.9B
$108M 0.4%
1,054,053
-32,920
-3% -$3.84M
PD icon
90
PagerDuty
PD
$915M
$107M 0.4%
4,332,503
+144,894
+3% +$3.98M
POOL icon
91
Pool Corp
POOL
$7.32B
$107M 0.4%
+304,218
New +$121M
RBA icon
92
RB Global
RBA
$16.6B
$105M 0.39%
1,609,097
-1,010,744
-39% -$59.3M
CELH icon
93
Celsius Holdings
CELH
$7.11B
$100M 0.37%
4,614,759
-84,294
-2% -$1.63M
TXN icon
94
Texas Instruments
TXN
$257B
$98.4M 0.36%
640,686
+127,085
+25% +$21.4M
BURL icon
95
Burlington
BURL
$22.6B
$97.5M 0.36%
715,986
-296,480
-29% -$53.7M
GMED icon
96
Globus Medical
GMED
$11.4B
$97.4M 0.36%
1,734,795
+1,370,271
+376% +$90.1M
TWST icon
97
Twist Bioscience
TWST
$7.72B
$95M 0.35%
2,717,385
+1,045,779
+63% +$37M
ITUB icon
98
Itaú Unibanco
ITUB
$82.7B
$93.4M 0.35%
24,717,241
+668,418
+3% +$2.97M
MLM icon
99
Martin Marietta Materials
MLM
$33.3B
$92.3M 0.34%
308,401
-6,978
-2% -$2.38M
INFY icon
100
Infosys
INFY
$51B
$92.2M 0.34%
4,977,375
-265,258
-5% -$5.28M
2 3
4
5 6

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William Blair Investment Management's Q2 2022 Portfolio in Review

As of Q2 2022, William Blair Investment Management held 465 positions worth $27B, down 19% from $33.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair Investment Management's Q2 2022 filing shows 24 new, 112 increased, 263 reduced and 62 closed positions. Its largest new stake was Petco: 7,619,542 shares worth $112M. The largest sale was Bio-Techne, an estimated $206M.

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

  • William Blair Investment Management's largest Q2 2022 buy was Petco: 7,619,542 shares worth $112M.
  • William Blair Investment Management added most to Linde in Q2 2022, an estimated $146M increase.
  • William Blair Investment Management's biggest Q2 2022 reduction was TSMC, cutting an estimated $127M.
  • William Blair Investment Management fully exited Bio-Techne in Q2 2022, selling an estimated $206M.
  • William Blair Investment Management's ten largest holdings make up 18% of its $27B portfolio in Q2 2022.
  • William Blair Investment Management opened 24 new positions and closed 62 in Q2 2022.
  • William Blair Investment Management's portfolio value fell 19% quarter-over-quarter to $27B.

Based on William Blair Investment Management's 13F filing for Q2 2022, filed 10 Aug 2022.