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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
+1.99%
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
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
EQIX icon
251
Equinix
EQIX
$105B
$16.9M 0.06%
21,387
-961
-4% -$798K
EXEL icon
252
Exelixis
EXEL
$12.5B
$16.8M 0.06%
793,017
-189,481
-19% -$3.52M
GDDY icon
253
GoDaddy
GDDY
$11.6B
$16.6M 0.06%
238,060
+6,524
+3% +$505K
IRDM icon
254
Iridium Communications
IRDM
$5.26B
$16.4M 0.06%
411,676
+43,987
+12% +$1.85M
XLF icon
255
State Street Financial Select Sector SPDR ETF
XLF
$59.1B
$16.3M 0.06%
434,048
+113,827
+36% +$4.26M
DEO icon
256
Diageo
DEO
$52.2B
$16.2M 0.06%
83,881
+9,841
+13% +$1.91M
VTI icon
257
Vanguard Morningstar Total Stock Market ETF
VTI
$691B
$16M 0.05%
72,063
-977
-1% -$223K
SPGI icon
258
S&P Global
SPGI
$121B
$15.8M 0.05%
37,190
+1,514
+4% +$656K
SJM icon
259
J.M. Smucker
SJM
$12.7B
$15.7M 0.05%
130,897
+9,986
+8% +$1.27M
PTON icon
260
Peloton Interactive
PTON
$2.38B
$15.6M 0.05%
179,721
-1,087
-0.6% -$120K
BAX icon
261
Baxter International
BAX
$13.9B
$15.6M 0.05%
194,127
+142,209
+274% +$11.2M
THS
262
DELISTED
Treehouse Foods
THS
$15.6M 0.05%
390,620
-11,310
-3% -$462K
GLOB icon
263
Globant
GLOB
$1.67B
$15.5M 0.05%
55,282
-838
-1% -$230K
COO icon
264
Cooper Companies
COO
$15B
$15.4M 0.05%
148,716
+568
+0.4% +$60.6K
LPSN icon
265
LivePerson
LPSN
$34.1M
$15.2M 0.05%
17,217
-81
-0.5% -$76.4K
TSCO icon
266
Tractor Supply
TSCO
$19B
$15.2M 0.05%
374,085
-12,285
-3% -$476K
IAU icon
267
iShares Gold Trust
IAU
$65.4B
$14.9M 0.05%
445,880
-13,988
-3% -$477K
TWTR
268
DELISTED
Twitter, Inc.
TWTR
$14.6M 0.05%
241,537
+84
+0% +$5.52K
AVGO icon
269
Broadcom
AVGO
$1.98T
$14.5M 0.05%
298,520
+5,200
+2% +$253K
BOKF icon
270
BOK Financial
BOKF
$8.8B
$14.4M 0.05%
161,158
– –
SHW icon
271
Sherwin-Williams
SHW
$87.4B
$14.2M 0.05%
50,831
+785
+2% +$230K
WFC icon
272
Wells Fargo
WFC
$269B
$14.2M 0.05%
305,548
+36,663
+14% +$1.7M
TAN icon
273
Invesco Solar ETF
TAN
$1.37B
$14.2M 0.05%
177,225
+586
+0.3% +$49.3K
DOMO icon
274
Domo
DOMO
$184M
$14.1M 0.05%
166,683
+120,923
+264% +$10.4M
RSP icon
275
Invesco S&P 500 Equal Weight ETF
RSP
$99.5B
$14.1M 0.05%
93,829
-546
-0.6% -$83.6K
9 10
11
12 13

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William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

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 Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.