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 | |
|---|---|---|---|---|---|---|
|
WCN
626
Waste Connections
WCN
$41.6B
| $2.42M | 0.01% |
22,435
-10,739
| -32% | -$1.09M |
|
627
Glaukos
GKOS
$11B
| $2.42M | 0.01% |
28,772
-4,091
| -12% | -$360K |
|
|
APHA
628
DELISTED
Aphria Inc. Common Shares
APHA
| $2.42M | 0.01% |
+131,440
| New | +$2.13M |
|
629
Lattice Semiconductor
LSCC
$18.4B
| $2.41M | 0.01% |
53,469
+1,293
| +2% | +$57.4K |
|
630
Carrier Global
CARR
$52.4B
| $2.4M | 0.01% |
56,974
-12,876
| -18% | -$501K |
|
631
Vanguard Russell 1000 Growth ETF
VONG
$46.3B
| $2.4M | 0.01% |
38,424
+8,648
| +29% | +$541K |
|
632
Compass Diversified
CODI
$937M
| $2.4M | 0.01% |
103,712
+1,155
| +1% | +$26K |
|
633
Valero Energy
VLO
$97.8B
| $2.4M | 0.01% |
33,501
+246
| +0.7% | +$16.7K |
|
|
MNDT
634
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $2.39M | 0.01% |
121,936
+11,180
| +10% | +$234K |
|
635
Kemper
KMPR
$1.58B
| $2.38M | 0.01% |
29,812
-37,346
| -56% | -$2.88M |
|
|
PPL
636
PPL Corp
PPL
$26.8B
| $2.38M | 0.01% |
82,345
+18,100
| +28% | +$507K |
|
637
Landstar System
LSTR
$6.42B
| $2.37M | 0.01% |
14,331
+632
| +5% | +$98.2K |
|
|
OTRK
638
DELISTED
Ontrak
OTRK
| $2.36M | 0.01% |
806
+427
| +113% | +$2.25M |
|
639
Vanguard Consumer Staples ETF
VDC
$8.02B
| $2.36M | 0.01% |
13,235
+2,901
| +28% | +$498K |
|
640
State Street SPDR Portfolio Emerging Markets ETF
SPEM
$17.7B
| $2.35M | 0.01% |
53,797
+12,221
| +29% | +$546K |
|
641
iShares Silver Trust
SLV
$31.4B
| $2.35M | 0.01% |
103,596
+7,063
| +7% | +$172K |
|
642
Entergy
ETR
$49.8B
| $2.34M | 0.01% |
47,090
+12,040
| +34% | +$569K |
|
|
SP
643
DELISTED
SP Plus Corporation
SP
| $2.34M | 0.01% |
71,348
+41,589
| +140% | +$1.34M |
|
644
Lennox International
LII
$14.4B
| $2.32M | 0.01% |
7,440
+85
| +1% | +$24.6K |
|
|
FBC
645
DELISTED
Flagstar Bancorp, Inc. New
FBC
| $2.32M | 0.01% |
51,400
-10,000
| -16% | -$452K |
|
646
BJs Wholesale Club
BJ
$12B
| $2.32M | 0.01% |
51,631
-5,522
| -10% | -$232K |
|
647
State Street SPDR Portfolio Developed World ex-US ETF
SPDW
$42.1B
| $2.31M | 0.01% |
65,368
| – | – |
|
648
Xcel Energy
XEL
$49.2B
| $2.31M | 0.01% |
34,659
-586
| -2% | -$37K |
|
649
Mettler-Toledo International
MTD
$28.6B
| $2.3M | 0.01% |
1,992
-939
| -32% | -$1.09M |
|
|
CRON
650
Cronos Group
CRON
$1.17B
| $2.3M | 0.01% |
242,767
+219,800
| +957% | +$2.33M |
|
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.