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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 | |
|---|---|---|---|---|---|---|
176
Comcast
CMCSA
$90.4B
| $27.9M | 0.11% |
516,291
-19,182
| -4% | -$1.01M |
|
177
Vanguard Short-Term Bond ETF
BSV
$45.6B
| $27.8M | 0.1% |
338,293
+49,423
| +17% | +$4.08M |
|
178
AT&T
T
$166B
| $27.2M | 0.1% |
1,189,445
-203,371
| -15% | -$4.5M |
|
179
Caterpillar
CAT
$393B
| $26.8M | 0.1% |
115,436
+2,718
| +2% | +$563K |
|
180
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27.2B
| $26.6M | 0.1% |
55,850
+886
| +2% | +$404K |
|
181
Akamai
AKAM
$17.6B
| $26.4M | 0.1% |
259,477
-17,448
| -6% | -$1.8M |
|
182
iShares MSCI Emerging Markets ETF
EEM
$30.4B
| $26.3M | 0.1% |
492,213
+176,167
| +56% | +$9.65M |
|
|
PXD
183
DELISTED
Pioneer Natural Resource Co.
PXD
| $26.2M | 0.1% |
165,080
+362
| +0.2% | +$51.4K |
|
184
SPDR Gold Trust
GLD
$144B
| $26.2M | 0.1% |
163,777
-55,906
| -25% | -$9.4M |
|
185
CVS Health
CVS
$121B
| $26.1M | 0.1% |
347,357
+30,238
| +10% | +$2.2M |
|
186
Vanguard S&P 500 ETF
VOO
$1.03T
| $26M | 0.1% |
71,489
-9,601
| -12% | -$3.4M |
|
187
Vanguard FTSE Emerging Markets ETF
VWO
$126B
| $26M | 0.1% |
499,063
+3,075
| +0.6% | +$164K |
|
188
Marvell Technology
MRVL
$195B
| $26M | 0.1% |
530,087
+183,471
| +53% | +$8.99M |
|
189
iShares Core S&P Total US Stock Market ETF
ITOT
$97.8B
| $25.5M | 0.1% |
278,600
+7,395
| +3% | +$663K |
|
190
Sysco
SYY
$40.5B
| $25.5M | 0.1% |
323,276
+63,477
| +24% | +$4.92M |
|
191
Cisco
CSCO
$488B
| $25.3M | 0.1% |
490,097
-35,035
| -7% | -$1.64M |
|
192
Micron Technology
MU
$1.03T
| $25.3M | 0.1% |
287,086
+11,404
| +4% | +$967K |
|
193
Northern Trust
NTRS
$35B
| $25.1M | 0.09% |
238,956
-11,322
| -5% | -$1.11M |
|
|
DAY
194
DELISTED
Dayforce
DAY
| $24.9M | 0.09% |
294,976
+35,270
| +14% | +$3.3M |
|
195
Cogent Communications
CCOI
$525M
| $24.5M | 0.09% |
355,850
+78,087
| +28% | +$4.78M |
|
196
Phreesia
PHR
$758M
| $24.3M | 0.09% |
465,608
-7,824
| -2% | -$493K |
|
197
ExxonMobil
XOM
$657B
| $24M | 0.09% |
429,255
-9,279
| -2% | -$486K |
|
|
WORK
198
DELISTED
Slack Technologies, Inc.
WORK
| $23.8M | 0.09% |
586,779
-284,818
| -33% | -$11.9M |
|
199
Generac Holdings
GNRC
$13.1B
| $23.7M | 0.09% |
72,252
+31,828
| +79% | +$9.38M |
|
200
Estee Lauder
EL
$31.7B
| $23.5M | 0.09% |
80,936
-742
| -0.9% | -$203K |
|
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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.