We are live on
!
Find out more
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 | |
|---|---|---|---|---|---|---|
651
iShares S&P 100 ETF
OEF
$20.6B
| $2.29M | 0.01% |
12,759
-9,835
| -44% | -$1.73M |
|
|
JAMF
652
DELISTED
Jamf
JAMF
| $2.28M | 0.01% |
64,545
+4,237
| +7% | +$155K |
|
653
Stanley Black & Decker
SWK
$15.5B
| $2.28M | 0.01% |
11,419
-169
| -1% | -$30.6K |
|
654
Vanguard Morningstar Large-Cap ETF
VV
$54.9B
| $2.26M | 0.01% |
12,218
-594
| -5% | -$108K |
|
|
DMTK
655
DELISTED
DermTech, Inc. Common Stock
DMTK
| $2.25M | 0.01% |
44,230
-18,950
| -30% | -$991K |
|
656
iShares US Technology ETF
IYW
$25.8B
| $2.24M | 0.01% |
25,540
-621
| -2% | -$54.4K |
|
657
Royal Bank of Canada
RY
$298B
| $2.24M | 0.01% |
24,288
+200
| +0.8% | +$17.4K |
|
658
First Trust Health Care AlphaDEX Fund
FXH
$1.11B
| $2.22M | 0.01% |
20,459
+594
| +3% | +$65K |
|
659
Napco Security Technologies
NSSC
$1.38B
| $2.21M | 0.01% |
126,746
-7,152
| -5% | -$110K |
|
660
CSX Corp
CSX
$93.2B
| $2.19M | 0.01% |
67,971
-13,920
| -17% | -$425K |
|
661
iShares Short-Term National Muni Bond ETF
SUB
$11.4B
| $2.19M | 0.01% |
20,269
+320
| +2% | +$34.5K |
|
|
MSP
662
DELISTED
Datto Holding Corp.
MSP
| $2.18M | 0.01% |
95,213
+47,021
| +98% | +$1.18M |
|
663
ASML
ASML
$717B
| $2.18M | 0.01% |
3,530
+1,268
| +56% | +$703K |
|
|
MXIM
664
DELISTED
Maxim Integrated Products
MXIM
| $2.16M | 0.01% |
23,630
-513
| -2% | -$47K |
|
665
Spotify
SPOT
$102B
| $2.16M | 0.01% |
+8,052
| New | +$2.51M |
|
666
Descartes Systems
DSGX
$6.54B
| $2.15M | 0.01% |
35,310
+10,182
| +41% | +$620K |
|
667
Sprott Physical Silver Trust
PSLV
$13.4B
| $2.13M | 0.01% |
242,671
+18,700
| +8% | +$176K |
|
668
Newmont
NEM
$120B
| $2.13M | 0.01% |
35,336
-13,706
| -28% | -$820K |
|
669
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.6B
| $2.13M | 0.01% |
29,634
-8,822
| -23% | -$626K |
|
670
Equity Residential
EQR
$24.7B
| $2.12M | 0.01% |
29,619
+18,590
| +169% | +$1.23M |
|
671
Charter Communications
CHTR
$18.5B
| $2.12M | 0.01% |
3,437
+180
| +6% | +$112K |
|
672
Lennar Class A
LEN
$21.1B
| $2.1M | 0.01% |
21,451
+1,067
| +5% | +$89.7K |
|
|
ALBO
673
DELISTED
Albireo Pharma Inc
ALBO
| $2.1M | 0.01% |
59,425
+5,552
| +10% | +$205K |
|
674
Vanguard Tax-Exempt Bond Index Fund
VTEB
$46.1B
| $2.08M | 0.01% |
38,120
+9,542
| +33% | +$524K |
|
675
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$55.6B
| $2.07M | 0.01% |
36,699
| – | – |
|
Similar funds
HF
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.