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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
IWV icon
126
iShares Russell 3000 ETF
IWV
$20.4B
$51.2M 0.18%
200,029
-488
-0.2% -$122K
IWM icon
127
iShares Russell 2000 ETF
IWM
$81.8B
$50.9M 0.18%
221,836
+7,649
+4% +$1.72M
ANET icon
128
Arista Networks
ANET
$250B
$50.2M 0.17%
2,217,920
+77,360
+4% +$1.62M
MRCY icon
129
Mercury Systems
MRCY
$6.55B
$50M 0.17%
754,979
-51,373
-6% -$3.55M
CVNA icon
130
Carvana
CVNA
$79.2B
$49.3M 0.17%
816,590
-9,255
-1% -$503K
MRK icon
131
Merck
MRK
$322B
$48.7M 0.17%
626,317
-40,548
-6% -$3.02M
U icon
132
Unity
U
$19.3B
$47.5M 0.16%
432,214
+298,437
+223% +$29.3M
TSLA icon
133
Tesla
TSLA
$1.31T
$47.1M 0.16%
207,801
-10,686
-5% -$2.32M
DLB icon
134
Dolby
DLB
$5.75B
$47M 0.16%
478,353
-37,099
-7% -$3.66M
OPRX icon
135
OptimizeRx
OPRX
$130M
$46.7M 0.16%
755,074
+2,971
+0.4% +$151K
CVX icon
136
Chevron
CVX
$386B
$46.2M 0.16%
441,060
+110
+0% +$11.6K
WST icon
137
West Pharmaceutical
WST
$24.7B
$46.2M 0.16%
128,562
+1,665
+1% +$550K
SMG icon
138
ScottsMiracle-Gro
SMG
$3.61B
$46M 0.16%
239,487
-14,593
-6% -$3.22M
BALL icon
139
Ball Corp
BALL
$16.6B
$45.7M 0.16%
564,229
+460,101
+442% +$39.8M
MMM icon
140
3M
MMM
$94.4B
$45.1M 0.16%
271,610
-16,851
-6% -$2.81M
BAC icon
141
Bank of America
BAC
$448B
$44.7M 0.15%
1,084,079
+21,846
+2% +$896K
QCOM icon
142
Qualcomm
QCOM
$171B
$44.1M 0.15%
308,456
-14,413
-4% -$1.95M
HON icon
143
Honeywell
HON
$72.9B
$43.9M 0.15%
212,238
+4,720
+2% +$998K
UPS icon
144
United Parcel Service
UPS
$88.8B
$43.5M 0.15%
209,238
-7,412
-3% -$1.48M
GILD icon
145
Gilead Sciences
GILD
$168B
$42.7M 0.15%
619,949
-110,273
-15% -$7.36M
PFE icon
146
Pfizer
PFE
$152B
$42.6M 0.15%
1,087,880
-65,603
-6% -$2.55M
ABNB icon
147
Airbnb
ABNB
$111B
$42.5M 0.15%
277,455
+236,452
+577% +$37.1M
IRTC icon
148
iRhythm Holdings
IRTC
$4.02B
$42.1M 0.15%
634,684
+136,521
+27% +$10.8M
WEX icon
149
WEX
WEX
$6.44B
$41.3M 0.14%
212,821
-46,699
-18% -$9.57M
TDOC icon
150
Teladoc Health
TDOC
$1.24B
$41.2M 0.14%
247,478
-404,817
-62% -$65.6M
4 5
6
7 8

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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.