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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
AMD icon
276
Advanced Micro Devices
AMD
$788B
$13.9M 0.05%
135,544
+5,696
+4% +$582K
EFG icon
277
iShares MSCI EAFE Growth ETF
EFG
$17.4B
$13.7M 0.05%
128,543
-1,250
-1% -$138K
MTN icon
278
Vail Resorts
MTN
$5.29B
$13.6M 0.05%
40,653
-2,085
-5% -$643K
VOE icon
279
Vanguard Morningstar Mid-Cap Value ETF
VOE
$24.4B
$13.5M 0.05%
96,971
+2,736
+3% +$389K
ROP icon
280
Roper Technologies
ROP
$39.1B
$13.3M 0.05%
29,815
+2,132
+8% +$1.02M
ADM icon
281
Archer Daniels Midland
ADM
$38.4B
$13.2M 0.05%
220,085
+15,295
+7% +$917K
VMC icon
282
Vulcan Materials
VMC
$36.3B
$13.2M 0.04%
77,873
-465
-0.6% -$83.3K
IT icon
283
Gartner
IT
$11.3B
$13M 0.04%
42,686
+761
+2% +$221K
TSM icon
284
TSMC
TSM
$2.23T
$13M 0.04%
116,175
+5,044
+5% +$592K
AVLR
285
DELISTED
Avalara, Inc.
AVLR
$12.7M 0.04%
72,666
+9,004
+14% +$1.55M
TD icon
286
Toronto Dominion Bank
TD
$204B
$12.7M 0.04%
191,233
+1,813
+1% +$121K
IEMG icon
287
iShares Core MSCI Emerging Markets ETF
IEMG
$158B
$12.6M 0.04%
203,270
-92,645
-31% -$5.9M
WBA
288
DELISTED
Walgreens Boots Alliance
WBA
$12.5M 0.04%
266,151
+12,435
+5% +$600K
FDX icon
289
FedEx
FDX
$77.3B
$12.4M 0.04%
56,650
-14,957
-21% -$4.06M
DOW icon
290
Dow Inc
DOW
$22.1B
$12.3M 0.04%
213,375
+9,982
+5% +$611K
USB icon
291
US Bancorp
USB
$101B
$12.3M 0.04%
206,208
-2,926
-1% -$167K
AMAT icon
292
Applied Materials
AMAT
$435B
$12.2M 0.04%
94,889
+710
+0.8% +$96.4K
AJG icon
293
Arthur J. Gallagher & Co
AJG
$65.5B
$12.2M 0.04%
82,168
-363
-0.4% -$51.9K
MS icon
294
Morgan Stanley
MS
$342B
$12.2M 0.04%
124,908
+2,058
+2% +$204K
LAZR
295
DELISTED
Luminar Technologies
LAZR
$12.1M 0.04%
51,651
+14,791
+40% +$3.91M
BDX icon
296
Becton Dickinson
BDX
$50B
$12.1M 0.04%
50,374
+189
+0.4% +$46.4K
MDLZ icon
297
Mondelez International
MDLZ
$79.4B
$12.1M 0.04%
207,283
+3,570
+2% +$222K
RPD icon
298
Rapid7
RPD
$827M
$12.1M 0.04%
106,633
-643
-0.6% -$72.9K
UL icon
299
Unilever
UL
$133B
$12M 0.04%
196,415
-7,924
-4% -$505K
DOV icon
300
Dover
DOV
$28B
$12M 0.04%
76,991
+1,263
+2% +$209K
10 11
12
13 14

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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.