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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
+13.98%
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
$27.3B
AUM Growth
+$3.7B
Cap. Flow
+$865M
Cap. Flow %
3.17%
Top 10 Hldgs %
25.38%
Holding
1,900
New
178
Increased
749
Reduced
623
Closed
72

Top Buys

Rank Stock Value
1
SPLK
Splunk Inc
SPLK
+$77.8M
2
GD icon
General Dynamics
GD
+$49.6M
3
ROK icon
Rockwell Automation
ROK
+$43.3M
4
LMBS icon
First Trust Exchange-Traded Fund IV First Trust Low Duration Opportunities ETF
LMBS
+$32.3M
5
JPM icon
JPMorgan Chase
JPM
+$30.6M

Top Sells

Rank Stock Value
1
WORK
Slack Technologies, Inc.
WORK
+$24.2M
2
NTRS icon
Northern Trust
NTRS
+$24.1M
3
BKNG icon
Booking.com
BKNG
+$22.5M
4
EXEL icon
Exelixis
EXEL
+$17.5M
5
DOCU
DocuSign
DOCU
+$15M

Sector Composition

Rank Sector Weight
1 Technology 27.82%
2 Healthcare 18.6%
3 Financials 11.15%
4 Consumer Discretionary 10.38%
5 Industrials 8.96%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SCHP icon
251
Schwab US TIPS ETF
SCHP
$16.2B
$13.9M 0.05%
446,532
-2,288
-0.5% -$70.3K
TROW icon
252
T. Rowe Price
TROW
$23.8B
$13.6M 0.05%
90,093
+1,983
+2% +$284K
KMB icon
253
Kimberly-Clark
KMB
$36.2B
$13.5M 0.05%
100,475
+6,252
+7% +$875K
TWTR
254
DELISTED
Twitter, Inc.
TWTR
$13.5M 0.05%
249,235
-5,315
-2% -$254K
IEFA icon
255
iShares Core MSCI EAFE ETF
IEFA
$196B
$13.5M 0.05%
195,244
-29,194
-13% -$1.89M
SCHW
256
Charles Schwab
SCHW
$189B
$13.5M 0.05%
254,291
-20,062
-7% -$908K
LMT icon
257
Lockheed Martin
LMT
$140B
$13.5M 0.05%
37,933
+360
+1% +$132K
EFG icon
258
iShares MSCI EAFE Growth ETF
EFG
$17.4B
$13.4M 0.05%
132,853
+758
+0.6% +$71.7K
MTN icon
259
Vail Resorts
MTN
$5.29B
$13.1M 0.05%
47,070
-5,925
-11% -$1.53M
DEO icon
260
Diageo
DEO
$52.2B
$12.9M 0.05%
81,015
+874
+1% +$130K
WBA
261
DELISTED
Walgreens Boots Alliance
WBA
$12.9M 0.05%
322,476
-34,178
-10% -$1.32M
PM icon
262
Philip Morris
PM
$290B
$12.8M 0.05%
154,059
-31,492
-17% -$2.45M
U icon
263
Unity
U
$19.6B
$12.7M 0.05%
82,616
+9,758
+13% +$1.19M
TD icon
264
Toronto Dominion Bank
TD
$204B
$12.7M 0.05%
224,618
-47,310
-17% -$2.4M
C icon
265
Citigroup
C
$231B
$12.6M 0.05%
205,099
-9,046
-4% -$460K
IRT icon
266
Independence Realty Trust
IRT
$3.96B
$12.5M 0.05%
930,229
+9,829
+1% +$126K
ENS icon
267
EnerSys
ENS
$6.81B
$12.5M 0.05%
150,087
-873
-0.6% -$68.5K
IAU icon
268
iShares Gold Trust
IAU
$65.4B
$12.5M 0.05%
343,742
+228
+0.1% +$8.16K
ROP icon
269
Roper Technologies
ROP
$39.1B
$12.4M 0.05%
28,683
+828
+3% +$340K
CI icon
270
Cigna
CI
$73.3B
$12.4M 0.05%
59,367
-1,782
-3% -$350K
MDLZ icon
271
Mondelez International
MDLZ
$79.4B
$12.2M 0.04%
209,499
-132,220
-39% -$7.56M
APPF icon
272
AppFolio
APPF
$6.97B
$11.9M 0.04%
66,070
+507
+0.8% +$81.1K
ORCL icon
273
Oracle
ORCL
$442B
$11.9M 0.04%
183,665
-4,384
-2% -$261K
TJX icon
274
TJX Companies
TJX
$169B
$11.8M 0.04%
172,638
+3,054
+2% +$186K
CLX icon
275
Clorox
CLX
$12.8B
$11.7M 0.04%
58,178
-33,260
-36% -$6.88M
9 10
11
12 13

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William Blair & Company's Q4 2020 Portfolio in Review

As of Q4 2020, William Blair & Company held 1,900 positions worth $27.3B, up 16% from $23.6B the previous quarter. Its ten largest holdings account for 25% of the portfolio.

William Blair & Company deployed $865M of net new capital in Q4 2020, opening 178 new positions and adding to 749 existing holdings. Its largest new stake was Seagen Inc. Common Stock: 91,539 shares worth $16M.

By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Healthcare and Financials.

On the sell side, the largest reduction was Slack Technologies, Inc., an estimated $24.2M trimmed.

  • William Blair & Company's largest Q4 2020 buy was Seagen Inc. Common Stock: 91,539 shares worth $16M.
  • William Blair & Company added most to Splunk Inc in Q4 2020, an estimated $77.8M increase.
  • William Blair & Company's biggest Q4 2020 reduction was Slack Technologies, Inc., cutting an estimated $24.2M.
  • William Blair & Company fully exited Dunkin' Brands Group, Inc. in Q4 2020, selling an estimated $12.1M.
  • William Blair & Company's ten largest holdings make up 25% of its $27.3B portfolio in Q4 2020.
  • William Blair & Company opened 178 new positions and closed 72 in Q4 2020.
  • William Blair & Company's portfolio value rose 16% quarter-over-quarter to $27.3B.

Based on William Blair & Company's 13F filing for Q4 2020, filed 9 Feb 2021.