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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 | |
|---|---|---|---|---|---|---|
126
Zoom
ZM
$30.8B
| $48.7M | 0.18% |
151,523
+23,712
| +19% | +$8.73M |
|
127
Tesla
TSLA
$1.29T
| $48.6M | 0.18% |
218,487
-100,842
| -32% | -$25.3M |
|
128
Evolent Health
EVH
$471M
| $48.3M | 0.18% |
2,391,682
+71,795
| +3% | +$1.37M |
|
129
iShares Russell 3000 ETF
IWV
$20.4B
| $47.6M | 0.18% |
200,517
-2,453
| -1% | -$570K |
|
130
iShares Russell 2000 ETF
IWM
$82.2B
| $47.3M | 0.18% |
214,187
-5,887
| -3% | -$1.29M |
|
131
Gilead Sciences
GILD
$168B
| $47.2M | 0.18% |
730,222
+22,381
| +3% | +$1.44M |
|
|
HOLX
132
DELISTED
Hologic
HOLX
| $46.7M | 0.18% |
627,260
+36,943
| +6% | +$2.8M |
|
133
3M
MMM
$94.8B
| $46.5M | 0.18% |
288,461
-12,487
| -4% | -$1.87M |
|
134
O'Reilly Automotive
ORLY
$74.5B
| $46.3M | 0.17% |
1,368,795
-20,580
| -1% | -$638K |
|
135
Chevron
CVX
$386B
| $46.2M | 0.17% |
440,950
+21,314
| +5% | +$2.08M |
|
136
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.37B
| $46.1M | 0.17% |
467,732
-10,445
| -2% | -$1.01M |
|
137
Vanguard Morningstar Value ETF
VTV
$193B
| $46M | 0.17% |
349,929
+31,331
| +10% | +$3.93M |
|
138
IBM
IBM
$222B
| $45.4M | 0.17% |
356,392
-23,973
| -6% | -$2.87M |
|
139
MongoDB
MDB
$35.2B
| $45.3M | 0.17% |
169,503
+447
| +0.3% | +$158K |
|
140
Intel
INTC
$509B
| $43.5M | 0.16% |
678,984
-65,421
| -9% | -$3.9M |
|
141
Carvana
CVNA
$79.7B
| $43.3M | 0.16% |
825,845
-8,485
| -1% | -$468K |
|
142
QuidelOrtho
QDEL
$1.02B
| $43.2M | 0.16% |
338,007
+1,077
| +0.3% | +$199K |
|
143
Exelixis
EXEL
$12.5B
| $42.9M | 0.16% |
1,900,923
+343,137
| +22% | +$7.75M |
|
144
Qualcomm
QCOM
$171B
| $42.8M | 0.16% |
322,869
+12,174
| +4% | +$1.76M |
|
145
Honeywell
HON
$74.6B
| $42.5M | 0.16% |
207,518
+2,656
| +1% | +$519K |
|
146
First Trust Exchange-Traded Fund IV First Trust Low Duration Opportunities ETF
LMBS
$6.39B
| $42.4M | 0.16% |
830,796
-99,432
| -11% | -$5.11M |
|
147
Pfizer
PFE
$150B
| $41.8M | 0.16% |
1,153,483
-28,063
| -2% | -$996K |
|
148
Bank of America
BAC
$453B
| $41.1M | 0.16% |
1,062,233
+106,451
| +11% | +$3.67M |
|
149
Arista Networks
ANET
$265B
| $40.4M | 0.15% |
2,140,560
-2,624
| -0.1% | -$49.1K |
|
150
Vanguard Short-Term Corporate Bond ETF
VCSH
$45B
| $37.3M | 0.14% |
451,904
-22,032
| -5% | -$1.83M |
|
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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.