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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+10.7%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$28.9B
AUM Growth
+$2.35B
Cap. Flow
-$98.3M
Cap. Flow %
-0.34%
Top 10 Hldgs %
23.73%
Holding
1,960
New
105
Increased
655
Reduced
787
Closed
72

Top Buys

Rank Stock Value
1
BALL icon
Ball Corp
BALL
+$39.8M
2
ABNB icon
Airbnb
ABNB
+$37.1M
3
GNRC icon
Generac Holdings
GNRC
+$34.4M
4
U icon
Unity
U
+$29.3M
5
TREX icon
Trex
TREX
+$29M

Top Sells

Rank Stock Value
1
FISV
Fiserv Inc
FISV
+$87.4M
2
TDOC icon
Teladoc Health
TDOC
+$65.6M
3
VRSK icon
Verisk Analytics
VRSK
+$65M
4
AAPL icon
Apple
AAPL
+$52M
5
ACWV icon
iShares MSCI Global Min Vol Factor ETF
ACWV
+$46.5M

Sector Composition

Rank Sector Weight
1 Technology 25.7%
2 Healthcare 19.69%
3 Financials 11.7%
4 Consumer Discretionary 10.72%
5 Industrials 9.79%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PRFT
351
DELISTED
Perficient Inc
PRFT
$8.62M 0.03%
107,148
+3,565
+3% +$251K
SITE icon
352
SiteOne Landscape Supply
SITE
$4.27B
$8.6M 0.03%
50,808
+3,118
+7% +$545K
SDY icon
353
State Street SPDR S&P Dividend ETF
SDY
$22.2B
$8.48M 0.03%
69,359
-6,721
-9% -$831K
SPTI icon
354
State Street SPDR Portfolio Intermediate Term Treasury ETF
SPTI
$10.6B
$8.47M 0.03%
261,741
-96,140
-27% -$3.11M
BN icon
355
Brookfield
BN
$111B
$8.33M 0.03%
236,268
-4,018
-2% -$103K
UNF icon
356
Unifirst Corp
UNF
$5.21B
$8.26M 0.03%
35,211
-17,898
-34% -$4.02M
IJH icon
357
iShares Core S&P Mid-Cap ETF
IJH
$128B
$8.23M 0.03%
153,120
-4,150
-3% -$224K
HCSG icon
358
Healthcare Services Group
HCSG
$1.45B
$8.21M 0.03%
260,029
+10,796
+4% +$328K
EOG icon
359
EOG Resources
EOG
$74.2B
$8.14M 0.03%
97,553
-41,062
-30% -$3.25M
BKI
360
DELISTED
Black Knight, Inc. Common Stock
BKI
$8.13M 0.03%
104,262
-7,043
-6% -$520K
CBOE icon
361
Cboe Global Markets
CBOE
$30.6B
$8.09M 0.03%
67,914
-532
-0.8% -$58.4K
INGN icon
362
Inogen
INGN
$154M
$7.98M 0.03%
122,409
+4,566
+4% +$289K
DFS
363
DELISTED
Discover Financial Services
DFS
$7.96M 0.03%
67,253
-6,573
-9% -$743K
NVRO
364
DELISTED
NEVRO CORP.
NVRO
$7.87M 0.03%
47,448
+1,374
+3% +$214K
GM icon
365
General Motors
GM
$75.8B
$7.82M 0.03%
132,144
+13,578
+11% +$798K
IVW icon
366
iShares S&P 500 Growth ETF
IVW
$77.9B
$7.8M 0.03%
107,264
-6,912
-6% -$478K
IVOL icon
367
Quadratic Interest Rate Volatility and Inflation Hedge ETF
IVOL
$271M
$7.74M 0.03%
280,366
+275,129
+5,254% +$7.83M
III icon
368
Information Services Group
III
$250M
$7.51M 0.03%
1,284,062
-44,339
-3% -$230K
GSY icon
369
Invesco Ultra Short Duration ETF
GSY
$3.88B
$7.48M 0.03%
148,266
-32,163
-18% -$1.62M
KNSL icon
370
Kinsale Capital Group
KNSL
$8.59B
$7.45M 0.03%
45,238
-450
-1% -$74.3K
PFPT
371
DELISTED
Proofpoint, Inc.
PFPT
$7.42M 0.03%
42,675
-26,510
-38% -$4.3M
PRAA icon
372
PRA Group
PRAA
$762M
$7.39M 0.03%
192,193
+8,669
+5% +$333K
IWP icon
373
iShares Russell Mid-Cap Growth ETF
IWP
$21.1B
$7.39M 0.03%
65,298
+107
+0.2% +$11.4K
CERN
374
DELISTED
Cerner Corp
CERN
$7.38M 0.03%
94,448
-17,171
-15% -$1.32M
ATR icon
375
AptarGroup
ATR
$8.43B
$7.32M 0.03%
51,937
-655
-1% -$96.6K
13 14
15
16 17

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William Blair & Company's Q2 2021 Portfolio in Review

As of Q2 2021, William Blair & Company held 1,960 positions worth $28.9B, up 8.9% from $26.5B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q2 2021 filing shows 105 new, 655 increased, 787 reduced and 72 closed positions. Its largest new stake was Luminar Technologies: 36,860 shares worth $12.1M. The largest sale was Fiserv Inc, an estimated $87.4M.

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

  • William Blair & Company's largest Q2 2021 buy was Luminar Technologies: 36,860 shares worth $12.1M.
  • William Blair & Company added most to Ball Corp in Q2 2021, an estimated $39.8M increase.
  • William Blair & Company's biggest Q2 2021 reduction was Fiserv Inc, cutting an estimated $87.4M.
  • William Blair & Company fully exited RealPage, Inc. in Q2 2021, selling an estimated $12.1M.
  • William Blair & Company's ten largest holdings make up 24% of its $28.9B portfolio in Q2 2021.
  • William Blair & Company opened 105 new positions and closed 72 in Q2 2021.
  • William Blair & Company's portfolio value rose 8.9% quarter-over-quarter to $28.9B.

Based on William Blair & Company's 13F filing for Q2 2021, filed 12 Aug 2021.