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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+2.39%
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
$26.5B
AUM Growth
-$769M
(-2.8%)
Cap. Flow
-$1.09B
Cap. Flow
% of AUM
-4.11%
Top 10 Holdings %
Top 10 Hldgs %
22.54%
Holding
1,941
New
123
Increased
715
Reduced
742
Closed
84
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
CarMax
KMX
|
+$73M |
| 2 |
OSH
Oak Street Health, Inc.
OSH
|
+$60.6M |
| 3 |
iRhythm Holdings
IRTC
|
+$51.2M |
| 4 |
DexCom
DXCM
|
+$39.4M |
| 5 |
Aon
AON
|
+$30.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$449M |
| 2 |
Vanguard Morningstar Growth ETF
VUG
|
+$271M |
| 3 |
Amazon
AMZN
|
+$157M |
| 4 |
Microsoft
MSFT
|
+$83.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$78.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 25.67% |
| 2 | Healthcare | 19.26% |
| 3 | Financials | 11.68% |
| 4 | Consumer Discretionary | 10.53% |
| 5 | Industrials | 9.66% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
151
United Parcel Service
UPS
$88.4B
| $36.8M | 0.14% |
216,650
-5,026
| -2% | -$813K |
|
152
OptimizeRx
OPRX
$132M
| $36.7M | 0.14% |
752,103
-27,821
| -4% | -$1.34M |
|
153
Berkshire Hathaway Class A
BRK.A
$1.09T
| $35.9M | 0.14% |
93
-2
| -2% | -$733K |
|
154
West Pharmaceutical
WST
$24.8B
| $35.8M | 0.13% |
126,897
+847
| +0.7% | +$242K |
|
155
iShares TIPS Bond ETF
TIP
$14.7B
| $35M | 0.13% |
279,167
-2,119
| -0.8% | -$268K |
|
156
Emerson Electric
EMR
$91.4B
| $34.5M | 0.13% |
381,889
-24,041
| -6% | -$2.07M |
|
157
Check Point Software Technologies
CHKP
$13.2B
| $34.4M | 0.13% |
307,200
-98,383
| -24% | -$11.9M |
|
158
RB Global
RBA
$16B
| $33.9M | 0.13% |
579,429
+28,841
| +5% | +$1.69M |
|
159
BlackLine
BL
$1.65B
| $33.9M | 0.13% |
312,638
+3,212
| +1% | +$401K |
|
160
Live Nation Entertainment
LYV
$43.2B
| $33.2M | 0.13% |
392,548
+253,096
| +181% | +$20.4M |
|
161
Crown Castle
CCI
$31.5B
| $32.5M | 0.12% |
189,028
+4,713
| +3% | +$755K |
|
162
Palo Alto Networks
PANW
$315B
| $32.4M | 0.12% |
602,934
+53,592
| +10% | +$3.19M |
|
163
iShares Russell 1000 Value ETF
IWD
$84B
| $32.2M | 0.12% |
212,332
-571
| -0.3% | -$82.6K |
|
164
CME Group
CME
$94.3B
| $31.5M | 0.12% |
154,480
-17,129
| -10% | -$3.37M |
|
165
Deere & Co
DE
$167B
| $31.5M | 0.12% |
84,297
+16,845
| +25% | +$5.53M |
|
166
Repay Holdings
RPAY
$311M
| $31M | 0.12% |
1,320,366
-314,944
| -19% | -$7.65M |
|
167
Jones Lang LaSalle
JLL
$16.7B
| $31M | 0.12% |
172,883
-4,552
| -3% | -$742K |
|
168
W.W. Grainger
GWW
$61.5B
| $30.6M | 0.12% |
76,422
-10,885
| -12% | -$4.21M |
|
169
Shopify
SHOP
$194B
| $30.3M | 0.11% |
273,730
-3,320
| -1% | -$401K |
|
170
Americold
COLD
$4.17B
| $30.2M | 0.11% |
785,485
-40,423
| -5% | -$1.45M |
|
171
Paylocity
PCTY
$7.73B
| $30.2M | 0.11% |
167,907
-11,655
| -6% | -$2.22M |
|
172
NextEra Energy
NEE
$179B
| $29.6M | 0.11% |
390,904
+34,313
| +10% | +$2.68M |
|
173
iShares Core US Aggregate Bond ETF
AGG
$138B
| $29.2M | 0.11% |
256,408
-59,571
| -19% | -$6.9M |
|
174
Paychex
PAYX
$42.8B
| $28.3M | 0.11% |
288,356
-4,614
| -2% | -$425K |
|
175
Colgate-Palmolive
CL
$73.6B
| $28M | 0.11% |
355,246
-8,791
| -2% | -$689K |
|
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William Blair & Company's Q1 2021 Portfolio in Review
As of Q1 2021, William Blair & Company held 1,941 positions worth $26.5B, down 2.8% from $27.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
William Blair & Company withdrew a net $1.09B in Q1 2021, closing 84 positions and reducing 742 holdings. Its most notable exit was HMS Holdings Corp., an estimated $7.64M position sold in full.
By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 28% a quarter earlier, followed by Healthcare and Financials.
Against the trend, William Blair & Company opened a new position in Oak Street Health, Inc. worth $59.1M.
- William Blair & Company's largest Q1 2021 buy was Oak Street Health, Inc.: 1,089,318 shares worth $59.1M.
- William Blair & Company added most to CarMax in Q1 2021, an estimated $73M increase.
- William Blair & Company's biggest Q1 2021 reduction was Apple, cutting an estimated $449M.
- William Blair & Company fully exited HMS Holdings Corp. in Q1 2021, selling an estimated $7.64M.
- William Blair & Company's ten largest holdings make up 23% of its $26.5B portfolio in Q1 2021.
- William Blair & Company opened 123 new positions and closed 84 in Q1 2021.
- William Blair & Company's portfolio value fell 2.8% quarter-over-quarter to $26.5B.
Based on William Blair & Company's 13F filing for Q1 2021, filed 13 May 2021.