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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 | |
|---|---|---|---|---|---|---|
351
Vanguard High Dividend Yield ETF
VYM
$84B
| $8.49M | 0.03% |
83,943
-188,080
| -69% | -$18.1M |
|
352
Floor & Decor
FND
$6.32B
| $8.33M | 0.03% |
87,288
+9,628
| +12% | +$938K |
|
|
BKI
353
DELISTED
Black Knight, Inc. Common Stock
BKI
| $8.23M | 0.03% |
111,305
+24,841
| +29% | +$2M |
|
354
VanEck Gold Miners ETF
GDX
$27.8B
| $8.22M | 0.03% |
253,059
+4,794
| +2% | +$163K |
|
355
Travelers Companies
TRV
$77.2B
| $8.22M | 0.03% |
54,680
+73
| +0.1% | +$10.7K |
|
356
Gartner
IT
$11.3B
| $8.2M | 0.03% |
44,924
+2,246
| +5% | +$390K |
|
357
iShares Core S&P Mid-Cap ETF
IJH
$128B
| $8.19M | 0.03% |
157,270
-17,095
| -10% | -$854K |
|
358
SiteOne Landscape Supply
SITE
$4.22B
| $8.14M | 0.03% |
47,690
-24,335
| -34% | -$4.04M |
|
|
CERN
359
DELISTED
Cerner Corp
CERN
| $8.02M | 0.03% |
111,619
-19,656
| -15% | -$1.48M |
|
360
Conagra Brands
CAG
$7.18B
| $7.98M | 0.03% |
212,163
-34,857
| -14% | -$1.23M |
|
361
Rapid7
RPD
$827M
| $7.96M | 0.03% |
106,617
-2,520
| -2% | -$209K |
|
362
Weyerhaeuser
WY
$17.8B
| $7.88M | 0.03% |
221,384
-7,533
| -3% | -$256K |
|
363
iShares 1-3 Year Treasury Bond ETF
SHY
$25.5B
| $7.84M | 0.03% |
90,882
-29,033
| -24% | -$2.51M |
|
364
Altria Group
MO
$107B
| $7.84M | 0.03% |
153,182
-32,452
| -17% | -$1.45M |
|
365
SBA Communications
SBAC
$19.4B
| $7.83M | 0.03% |
28,205
-122
| -0.4% | -$32.3K |
|
|
AVLR
366
DELISTED
Avalara, Inc.
AVLR
| $7.81M | 0.03% |
58,512
+3,266
| +6% | +$504K |
|
367
State Street Energy Select Sector SPDR ETF
XLE
$39.9B
| $7.71M | 0.03% |
314,320
+139,372
| +80% | +$3.22M |
|
368
Airbnb
ABNB
$108B
| $7.71M | 0.03% |
41,003
+38,368
| +1,456% | +$7.11M |
|
|
XLNX
369
DELISTED
Xilinx Inc
XLNX
| $7.69M | 0.03% |
62,039
-3,793
| -6% | -$506K |
|
|
STKL
370
DELISTED
SunOpta
STKL
| $7.67M | 0.03% |
519,126
-324,317
| -38% | -$4.64M |
|
371
Littelfuse
LFUS
$11.7B
| $7.54M | 0.03% |
28,498
+1,620
| +6% | +$431K |
|
372
Kinsale Capital Group
KNSL
$8.51B
| $7.53M | 0.03% |
45,688
-1,265
| -3% | -$232K |
|
373
AptarGroup
ATR
$8.47B
| $7.45M | 0.03% |
52,592
-2,361
| -4% | -$326K |
|
374
iShares S&P 500 Growth ETF
IVW
$77.3B
| $7.43M | 0.03% |
114,176
+9,077
| +9% | +$587K |
|
375
Protolabs
PRLB
$2.17B
| $7.4M | 0.03% |
60,748
+2,015
| +3% | +$335K |
|
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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.