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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 | |
|---|---|---|---|---|---|---|
601
BeyondSpring
BYSI
$37.5M
| $2.61M | 0.01% |
235,650
+161,150
| +216% | +$2.08M |
|
602
Agilent Technologies
A
$41.9B
| $2.58M | 0.01% |
20,276
-2,858
| -12% | -$353K |
|
603
SoundThinking
SSTI
$106M
| $2.57M | 0.01% |
73,384
-3,625
| -5% | -$158K |
|
|
HZNP
604
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $2.57M | 0.01% |
27,958
-2,263
| -7% | -$191K |
|
605
Main Street Capital
MAIN
$5.53B
| $2.57M | 0.01% |
65,628
| – | – |
|
606
Marriott International
MAR
$92.1B
| $2.56M | 0.01% |
17,291
-2,184
| -11% | -$298K |
|
|
CUB
607
DELISTED
Cubic Corporation
CUB
| $2.56M | 0.01% |
34,322
-1,684
| -5% | -$115K |
|
608
DraftKings
DKNG
$12.5B
| $2.52M | 0.01% |
41,102
+408
| +1% | +$24.5K |
|
|
KYNB
609
Kyntra Bio
KYNB
$28.7M
| $2.51M | 0.01% |
+2,897
| New | +$3.08M |
|
610
Fair Isaac
FICO
$23.1B
| $2.51M | 0.01% |
5,173
-549
| -10% | -$261K |
|
611
Saic
SAIC
$5.33B
| $2.51M | 0.01% |
30,059
+21,433
| +248% | +$2.01M |
|
612
PIMCO Enhanced Short Maturity Active Exchange-Traded Fund
MINT
$17.1B
| $2.5M | 0.01% |
24,496
+3,676
| +18% | +$375K |
|
|
JBTM
613
JBT Marel
JBTM
$6.1B
| $2.48M | 0.01% |
18,611
-524
| -3% | -$68.9K |
|
614
Oneok
OKE
$58.6B
| $2.48M | 0.01% |
48,890
+776
| +2% | +$35.3K |
|
615
Duluth Holdings
DLTH
$152M
| $2.47M | 0.01% |
145,869
-18,119
| -11% | -$252K |
|
|
EGRX
616
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
| $2.47M | 0.01% |
59,137
+9,432
| +19% | +$438K |
|
617
Moderna
MRNA
$25.2B
| $2.46M | 0.01% |
18,822
+3,529
| +23% | +$511K |
|
|
CELL
618
DELISTED
PhenomeX Inc. Common Stock
CELL
| $2.46M | 0.01% |
49,061
+46,761
| +2,033% | +$3.19M |
|
619
Snap-on
SNA
$20.9B
| $2.46M | 0.01% |
10,653
+54
| +0.5% | +$10.6K |
|
620
Boot Barn
BOOT
$4.98B
| $2.45M | 0.01% |
39,366
+13,481
| +52% | +$791K |
|
621
Sarepta Therapeutics
SRPT
$1.94B
| $2.45M | 0.01% |
32,910
-16,654
| -34% | -$1.54M |
|
622
ICICI Bank
IBN
$106B
| $2.45M | 0.01% |
152,879
-2,567
| -2% | -$41.9K |
|
623
Welltower
WELL
$169B
| $2.45M | 0.01% |
34,217
-2,193
| -6% | -$147K |
|
624
ITT
ITT
$19.3B
| $2.44M | 0.01% |
26,798
-633
| -2% | -$52.2K |
|
625
TransUnion
TRU
$15.2B
| $2.42M | 0.01% |
26,927
-9,904
| -27% | -$893K |
|
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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.