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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 | |
|---|---|---|---|---|---|---|
226
QuinStreet
QNST
$1.19B
| $18.2M | 0.07% |
896,715
-1,029
| -0.1% | -$23.2K |
|
227
Maravai LifeSciences
MRVI
$861M
| $18.2M | 0.07% |
510,630
+477,576
| +1,445% | +$15.8M |
|
228
Omnicom Group
OMC
$23.5B
| $17.9M | 0.07% |
240,899
-4,970
| -2% | -$343K |
|
229
AstraZeneca
AZN
$246B
| $17.8M | 0.07% |
178,595
-49,557
| -22% | -$4.98M |
|
230
Citigroup
C
$231B
| $17.6M | 0.07% |
242,191
+37,092
| +18% | +$2.48M |
|
231
Illumina
ILMN
$29.1B
| $17.3M | 0.07% |
46,427
+2,934
| +7% | +$1.2M |
|
232
Cooper Companies
COO
$15B
| $17.2M | 0.07% |
179,436
-94,868
| -35% | -$9M |
|
233
Global Payments
GPN
$23.4B
| $17.1M | 0.06% |
84,947
+8,116
| +11% | +$1.62M |
|
234
Vanguard Morningstar Mid-Cap ETF
VO
$110B
| $16.9M | 0.06% |
306,232
+4,416
| +1% | +$240K |
|
235
Parker-Hannifin
PH
$135B
| $16.8M | 0.06% |
53,299
-1,344
| -2% | -$388K |
|
236
iShares Select Dividend ETF
DVY
$23.7B
| $16.6M | 0.06% |
145,862
-21,764
| -13% | -$2.3M |
|
237
Vanguard Morningstar Total Stock Market ETF
VTI
$691B
| $16.5M | 0.06% |
79,702
-6,571
| -8% | -$1.33M |
|
238
Applied Materials
AMAT
$435B
| $16.4M | 0.06% |
122,996
+30,761
| +33% | +$3.39M |
|
239
iShares Core MSCI Emerging Markets ETF
IEMG
$158B
| $16.2M | 0.06% |
252,355
-52,760
| -17% | -$3.47M |
|
|
SCHW
240
Charles Schwab
SCHW
$189B
| $16.2M | 0.06% |
249,163
-5,128
| -2% | -$311K |
|
241
NeoGenomics
NEO
$2.11B
| $16.1M | 0.06% |
333,884
+43,404
| +15% | +$2.26M |
|
242
Invesco Solar ETF
TAN
$1.37B
| $16.1M | 0.06% |
175,275
-9,010
| -5% | -$947K |
|
243
Tenable Holdings
TENB
$4.08B
| $15.8M | 0.06% |
435,411
-12,167
| -3% | -$550K |
|
|
CONE
244
DELISTED
CyrusOne Inc Common Stock
CONE
| $15.7M | 0.06% |
232,358
+18,569
| +9% | +$1.29M |
|
245
FedEx
FDX
$77.3B
| $15.5M | 0.06% |
54,703
+9,845
| +22% | +$2.54M |
|
246
T. Rowe Price
TROW
$23.8B
| $15.5M | 0.06% |
90,525
+432
| +0.5% | +$70.8K |
|
|
TWTR
247
DELISTED
Twitter, Inc.
TWTR
| $15.5M | 0.06% |
242,955
-6,280
| -3% | -$384K |
|
|
WBA
248
DELISTED
Walgreens Boots Alliance
WBA
| $15.4M | 0.06% |
280,512
-41,964
| -13% | -$2.07M |
|
249
Bio-Techne
TECH
$11.3B
| $15.4M | 0.06% |
160,784
-15,152
| -9% | -$1.38M |
|
250
Iridium Communications
IRDM
$5.26B
| $15.3M | 0.06% |
371,494
-7,484
| -2% | -$328K |
|
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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.