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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
ORLY icon
151
O'Reilly Automotive
ORLY
$74.1B
$40.7M 0.14%
1,078,995
-289,800
-21% -$10.4M
MRVI icon
152
Maravai LifeSciences
MRVI
$858M
$40.6M 0.14%
972,630
+462,000
+90% +$17.9M
SHOP icon
153
Shopify
SHOP
$194B
$40.2M 0.14%
275,210
+1,480
+0.5% +$182K
PANW icon
154
Palo Alto Networks
PANW
$315B
$38M 0.13%
615,186
+12,252
+2% +$726K
QDEL icon
155
QuidelOrtho
QDEL
$992M
$37.9M 0.13%
296,175
-41,832
-12% -$4.92M
RBA icon
156
RB Global
RBA
$16.1B
$37.9M 0.13%
638,950
+59,521
+10% +$3.66M
HOLX
157
DELISTED
Hologic
HOLX
$37.7M 0.13%
564,512
-62,748
-10% -$4.19M
CCI icon
158
Crown Castle
CCI
$31.4B
$37.6M 0.13%
192,588
+3,560
+2% +$667K
BL icon
159
BlackLine
BL
$1.62B
$35.4M 0.12%
318,411
+5,773
+2% +$630K
INTC icon
160
Intel
INTC
$510B
$35.1M 0.12%
624,401
-54,583
-8% -$3.2M
EMR icon
161
Emerson Electric
EMR
$91.2B
$35M 0.12%
363,197
-18,692
-5% -$1.76M
JLL icon
162
Jones Lang LaSalle
JLL
$16.7B
$34.9M 0.12%
178,659
+5,776
+3% +$1.13M
TIP icon
163
iShares TIPS Bond ETF
TIP
$14.7B
$34.6M 0.12%
270,649
-8,518
-3% -$1.08M
PCTY icon
164
Paylocity
PCTY
$7.51B
$34.5M 0.12%
180,607
+12,700
+8% +$2.29M
MRVL icon
165
Marvell Technology
MRVL
$199B
$34.2M 0.12%
586,100
+56,013
+11% +$2.74M
IWD icon
166
iShares Russell 1000 Value ETF
IWD
$83.8B
$33.8M 0.12%
212,925
+593
+0.3% +$93.9K
GWW icon
167
W.W. Grainger
GWW
$61.2B
$33.6M 0.12%
76,726
+304
+0.4% +$134K
CME icon
168
CME Group
CME
$93.6B
$32.9M 0.11%
154,759
+279
+0.2% +$58.9K
CVS icon
169
CVS Health
CVS
$120B
$32.1M 0.11%
384,140
+36,783
+11% +$3.01M
GLD icon
170
SPDR Gold Trust
GLD
$144B
$31.9M 0.11%
192,833
+29,056
+18% +$4.94M
WAB icon
171
Wabtec
WAB
$49.9B
$31.7M 0.11%
385,504
+300,720
+355% +$24.4M
NEE icon
172
NextEra Energy
NEE
$179B
$31M 0.11%
422,663
+31,759
+8% +$2.38M
DE icon
173
Deere & Co
DE
$165B
$30.6M 0.11%
86,854
+2,557
+3% +$933K
MDY icon
174
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27.1B
$30.6M 0.11%
62,230
+6,380
+11% +$3.15M
CMG icon
175
Chipotle Mexican Grill
CMG
$41.5B
$30.2M 0.1%
974,250
+212,550
+28% +$6.07M
5 6
7
8 9

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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.