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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$31.9B
AUM Growth
+$2.51B
Cap. Flow
+$830M
Cap. Flow %
2.6%
Top 10 Hldgs %
23.75%
Holding
2,051
New
174
Increased
889
Reduced
606
Closed
88

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66.8M
2
PODD icon
Insulet
PODD
+$47M
3
XMTR icon
Xometry
XMTR
+$44.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.7M
5
AON icon
Aon
AON
+$36.1M

Top Sells

Rank Stock Value
1
PYPL icon
PayPal
PYPL
+$73.8M
2
ATVI
Activision Blizzard
ATVI
+$46.9M
3
OSH
Oak Street Health, Inc.
OSH
+$43.6M
4
DIS icon
Walt Disney
DIS
+$34M
5
PGR icon
Progressive
PGR
+$32.6M

Sector Composition

Rank Sector Weight
1 Technology 26.2%
2 Healthcare 19.21%
3 Financials 10.7%
4 Consumer Discretionary 10.6%
5 Industrials 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WBA
301
DELISTED
Walgreens Boots Alliance
WBA
$13.1M 0.04%
250,988
-15,163
-6% -$734K
XLNX
302
DELISTED
Xilinx Inc
XLNX
$12.9M 0.04%
60,769
-692
-1% -$136K
XLK icon
303
State Street Technology Select Sector SPDR ETF
XLK
$124B
$12.8M 0.04%
147,030
+8,924
+6% +$735K
NSC icon
304
Norfolk Southern
NSC
$75.1B
$12.8M 0.04%
42,857
+6,347
+17% +$1.77M
VGT icon
305
Vanguard Information Technology ETF
VGT
$149B
$12.7M 0.04%
220,912
+13,416
+6% +$737K
MTN icon
306
Vail Resorts
MTN
$5.3B
$12.5M 0.04%
38,220
-2,433
-6% -$829K
USB icon
307
US Bancorp
USB
$99.6B
$12.5M 0.04%
222,081
+15,873
+8% +$939K
XLV icon
308
State Street Health Care Select Sector SPDR ETF
XLV
$42.7B
$12.4M 0.04%
88,209
+4,420
+5% +$587K
SBAC icon
309
SBA Communications
SBAC
$19.5B
$12.4M 0.04%
31,935
+4,747
+17% +$1.67M
PFF icon
310
iShares Preferred and Income Securities ETF
PFF
$13.3B
$12.3M 0.04%
312,423
+237,647
+318% +$9.24M
NEO icon
311
NeoGenomics
NEO
$2.13B
$12.1M 0.04%
355,215
-5,957
-2% -$233K
PRFT
312
DELISTED
Perficient Inc
PRFT
$12.1M 0.04%
93,655
-9,279
-9% -$1.22M
RPD icon
313
Rapid7
RPD
$773M
$12M 0.04%
102,262
-4,371
-4% -$539K
BDX icon
314
Becton Dickinson
BDX
$48.2B
$12M 0.04%
49,029
-1,345
-3% -$322K
EPD icon
315
Enterprise Products Partners
EPD
$81.7B
$12M 0.04%
546,887
+36,824
+7% +$826K
J icon
316
Jacobs Solutions
J
$17B
$11.9M 0.04%
103,739
+12,290
+13% +$1.42M
ICLR icon
317
Icon
ICLR
$12.7B
$11.9M 0.04%
38,412
+10,129
+36% +$2.83M
CI icon
318
Cigna
CI
$74.6B
$11.8M 0.04%
51,510
+4,638
+10% +$986K
VMI icon
319
Valmont Industries
VMI
$9.53B
$11.8M 0.04%
46,911
-274
-0.6% -$67.1K
IJR icon
320
iShares Core S&P Small-Cap ETF
IJR
$112B
$11.7M 0.04%
102,036
+9,066
+10% +$1.03M
EPAM icon
321
EPAM Systems
EPAM
$5.03B
$11.7M 0.04%
17,460
-395
-2% -$254K
XLE icon
322
State Street Energy Select Sector SPDR ETF
XLE
$37.7B
$11.6M 0.04%
419,680
+116,054
+38% +$3.28M
MKL icon
323
Markel Group
MKL
$23.2B
$11.6M 0.04%
9,436
+347
+4% +$438K
BN icon
324
Brookfield
BN
$108B
$11.6M 0.04%
280,136
+32,469
+13% +$1.03M
DUK icon
325
Duke Energy
DUK
$97.3B
$11.6M 0.04%
110,547
+1,358
+1% +$138K
11 12
13
14 15

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William Blair & Company's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair & Company held 2,051 positions worth $31.9B, up 8.5% from $29.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2021 filing shows 174 new, 889 increased, 606 reduced and 88 closed positions. Its largest new stake was Portillo's: 759,814 shares worth $28.5M. The largest sale was PayPal, an estimated $73.8M.

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 Q4 2021 buy was Portillo's: 759,814 shares worth $28.5M.
  • William Blair & Company added most to Amazon in Q4 2021, an estimated $66.8M increase.
  • William Blair & Company's biggest Q4 2021 reduction was PayPal, cutting an estimated $73.8M.
  • William Blair & Company fully exited Asana in Q4 2021, selling an estimated $6.06M.
  • William Blair & Company's ten largest holdings make up 24% of its $31.9B portfolio in Q4 2021.
  • William Blair & Company opened 174 new positions and closed 88 in Q4 2021.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.9B.

Based on William Blair & Company's 13F filing for Q4 2021, filed 14 Feb 2022.