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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
VXF icon
301
Vanguard Extended Market ETF
VXF
$32.3B
$11.5M 0.04%
61,214
+687
+1% +$126K
DOV icon
302
Dover
DOV
$27.8B
$11.4M 0.04%
75,728
+2,862
+4% +$422K
ADPT icon
303
Adaptive Biotechnologies
ADPT
$3.89B
$11.4M 0.04%
278,959
-8,224
-3% -$320K
PAVE icon
304
Global X US Infrastructure Development ETF
PAVE
$14.3B
$11.3M 0.04%
439,490
+82,125
+23% +$2.13M
KMB icon
305
Kimberly-Clark
KMB
$36.8B
$11.3M 0.04%
84,493
-13,509
-14% -$1.8M
XLE icon
306
State Street Energy Select Sector SPDR ETF
XLE
$39.9B
$11.3M 0.04%
418,544
+104,224
+33% +$2.71M
MS icon
307
Morgan Stanley
MS
$343B
$11.3M 0.04%
122,850
-8,323
-6% -$714K
CI icon
308
Cigna
CI
$73.5B
$11.3M 0.04%
47,463
-8,625
-15% -$2.15M
RH icon
309
RH
RH
$3.4B
$11M 0.04%
16,227
-433
-3% -$281K
IJR icon
310
iShares Core S&P Small-Cap ETF
IJR
$113B
$10.9M 0.04%
96,654
+11,032
+13% +$1.23M
BYND icon
311
Beyond Meat
BYND
$210M
$10.9M 0.04%
69,071
+14,832
+27% +$1.97M
IRM icon
312
Iron Mountain
IRM
$37.7B
$10.8M 0.04%
255,219
-14,831
-5% -$622K
DUK icon
313
Duke Energy
DUK
$97.1B
$10.7M 0.04%
108,639
-10,765
-9% -$1.08M
TCMD icon
314
Tactile Systems Technology
TCMD
$537M
$10.7M 0.04%
205,532
-18,075
-8% -$977K
TJX icon
315
TJX Companies
TJX
$170B
$10.7M 0.04%
158,184
-10,748
-6% -$733K
EPAM icon
316
EPAM Systems
EPAM
$5.24B
$10.7M 0.04%
20,851
-1,018
-5% -$477K
MCO icon
317
Moody's
MCO
$84.6B
$10.6M 0.04%
29,153
+14
+0% +$4.66K
XLV icon
318
State Street Health Care Select Sector SPDR ETF
XLV
$44B
$10.4M 0.04%
82,794
+8,396
+11% +$1.03M
IUSG icon
319
iShares Core S&P US Growth ETF
IUSG
$34B
$10.4M 0.04%
102,614
+6,590
+7% +$635K
VGT icon
320
Vanguard Information Technology ETF
VGT
$151B
$10.3M 0.04%
207,000
-12,184
-6% -$575K
AVLR
321
DELISTED
Avalara, Inc.
AVLR
$10.3M 0.04%
63,662
+5,150
+9% +$718K
XYL icon
322
Xylem
XYL
$28.1B
$10.2M 0.04%
85,015
+998
+1% +$114K
IT icon
323
Gartner
IT
$11.6B
$10.2M 0.04%
41,925
-2,999
-7% -$656K
RPD icon
324
Rapid7
RPD
$929M
$10.2M 0.04%
107,276
+659
+0.6% +$55.5K
XLK icon
325
State Street Technology Select Sector SPDR ETF
XLK
$125B
$10.1M 0.04%
136,804
+286
+0.2% +$20K
11 12
13
14 15

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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.