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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
PTLO icon
201
Portillo's
PTLO
$318M
$28.5M 0.09%
+759,814
New +$30.5M
IWF icon
202
iShares Russell 1000 Growth ETF
IWF
$127B
$28.4M 0.09%
371,976
+1,108
+0.3% +$82.1K
PLNT icon
203
Planet Fitness
PLNT
$4.05B
$28.2M 0.09%
311,543
+37,306
+14% +$3.18M
XOM icon
204
ExxonMobil
XOM
$642B
$28.1M 0.09%
458,745
-33,633
-7% -$2.1M
VWO icon
205
Vanguard FTSE Emerging Markets ETF
VWO
$123B
$27.9M 0.09%
564,276
+57,872
+11% +$2.92M
IWB icon
206
iShares Russell 1000 ETF
IWB
$49.7B
$27.9M 0.09%
105,380
-3,593
-3% -$925K
AGG icon
207
iShares Core US Aggregate Bond ETF
AGG
$137B
$27.1M 0.09%
237,952
-1,263
-0.5% -$144K
CL icon
208
Colgate-Palmolive
CL
$74.1B
$27.1M 0.09%
317,399
-18,219
-5% -$1.42M
GS icon
209
Goldman Sachs
GS
$301B
$26.8M 0.08%
69,967
-203
-0.3% -$80.4K
CMCSA icon
210
Comcast
CMCSA
$89.3B
$26.5M 0.08%
526,039
+20,548
+4% +$1.07M
VNQ icon
211
Vanguard Real Estate ETF
VNQ
$38.8B
$26.4M 0.08%
227,474
+12,604
+6% +$1.38M
FTNT icon
212
Fortinet
FTNT
$117B
$25.5M 0.08%
354,490
-2,365
-0.7% -$156K
HEI icon
213
HEICO Corp
HEI
$50.8B
$25.5M 0.08%
176,490
-4,154
-2% -$586K
ULTA icon
214
Ulta Beauty
ULTA
$23.2B
$24.5M 0.08%
59,490
+1,157
+2% +$450K
TENB icon
215
Tenable Holdings
TENB
$3.98B
$24.5M 0.08%
444,090
+11,354
+3% +$588K
AMGN icon
216
Amgen
AMGN
$219B
$24.3M 0.08%
107,881
+27,573
+34% +$5.82M
IRT icon
217
Independence Realty Trust
IRT
$4B
$24.1M 0.08%
931,536
+18,113
+2% +$429K
IEFA icon
218
iShares Core MSCI EAFE ETF
IEFA
$194B
$23.6M 0.07%
315,868
+25,523
+9% +$1.92M
RTX icon
219
RTX Corp
RTX
$301B
$23.1M 0.07%
268,604
+24,683
+10% +$2.15M
AVGO icon
220
Broadcom
AVGO
$2T
$22.8M 0.07%
343,120
+44,600
+15% +$2.51M
CONE
221
DELISTED
CyrusOne Inc Common Stock
CONE
$22.8M 0.07%
254,372
-9,488
-4% -$805K
FLYW icon
222
Flywire
FLYW
$2.21B
$22.2M 0.07%
+584,379
New +$25M
APD icon
223
Air Products & Chemicals
APD
$66.8B
$22.1M 0.07%
72,772
+679
+0.9% +$199K
ESGD icon
224
iShares ESG Aware MSCI EAFE ETF
ESGD
$12.2B
$21.6M 0.07%
272,435
+1,983
+0.7% +$158K
PHR icon
225
Phreesia
PHR
$706M
$21.6M 0.07%
518,308
+32,814
+7% +$1.95M
7 8
9
10 11

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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.