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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 | |
|---|---|---|---|---|---|---|
101
Trimble
TRMB
$13.3B
| $65.2M | 0.25% |
837,540
+418,611
| +100% | +$30.2M |
|
102
NVIDIA
NVDA
$5.39T
| $65.1M | 0.25% |
4,875,400
-930,200
| -16% | -$12.5M |
|
103
Yeti Holdings
YETI
$3.82B
| $64.8M | 0.24% |
897,197
+7,715
| +0.9% | +$550K |
|
104
Roku
ROKU
$22.5B
| $64.3M | 0.24% |
197,414
-5,751
| -3% | -$2.25M |
|
|
INFO
105
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $64M | 0.24% |
661,606
+22,934
| +4% | +$2.1M |
|
106
ScottsMiracle-Gro
SMG
$3.64B
| $62.2M | 0.23% |
254,080
-168,380
| -40% | -$38.1M |
|
107
Texas Instruments
TXN
$253B
| $59.5M | 0.22% |
314,870
-1,263
| -0.4% | -$219K |
|
108
Lowe's Companies
LOW
$122B
| $59.4M | 0.22% |
312,137
-16,471
| -5% | -$2.83M |
|
|
OSH
109
DELISTED
Oak Street Health, Inc.
OSH
| $59.1M | 0.22% |
+1,089,318
| New | +$60.6M |
|
110
Automatic Data Processing
ADP
$107B
| $59M | 0.22% |
313,250
-8,409
| -3% | -$1.46M |
|
111
iShares MSCI EAFE ETF
EFA
$80.1B
| $57.6M | 0.22% |
759,140
-5,894
| -0.8% | -$444K |
|
112
Uber
UBER
$155B
| $57.5M | 0.22% |
1,054,779
+220,467
| +26% | +$12.3M |
|
113
Medtronic
MDT
$116B
| $57.3M | 0.22% |
484,878
-10,013
| -2% | -$1.17M |
|
114
Mercury Systems
MRCY
$6.72B
| $57M | 0.21% |
806,352
+62,117
| +8% | +$4.49M |
|
115
Rollins
ROL
$17.6B
| $56.5M | 0.21% |
1,641,779
+63,280
| +4% | +$2.27M |
|
116
ResMed
RMD
$32.8B
| $56.3M | 0.21% |
290,028
+31,840
| +12% | +$6.38M |
|
117
WEX
WEX
$6.53B
| $54.3M | 0.2% |
259,520
-2,994
| -1% | -$632K |
|
118
Sprout Social
SPT
$580M
| $53.2M | 0.2% |
921,846
+44,864
| +5% | +$2.81M |
|
119
Eli Lilly
LLY
$1.09T
| $53.1M | 0.2% |
284,450
-18,715
| -6% | -$3.66M |
|
120
Invesco QQQ Trust
QQQ
$481B
| $52.9M | 0.2% |
165,850
-11,675
| -7% | -$3.73M |
|
121
Blackrock
BLK
$180B
| $51.5M | 0.19% |
68,278
+3,463
| +5% | +$2.51M |
|
122
Dolby
DLB
$5.76B
| $50.9M | 0.19% |
515,452
-35,837
| -7% | -$3.43M |
|
|
P
123
Everpure Inc
P
$37.1B
| $49.5M | 0.19% |
2,299,627
-31,570
| -1% | -$751K |
|
124
Merck
MRK
$331B
| $49.1M | 0.19% |
666,865
-31,920
| -5% | -$2.35M |
|
125
iShares Core S&P US Value ETF
IUSV
$27.9B
| $48.7M | 0.18% |
706,594
+161,941
| +30% | +$10.6M |
|
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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.