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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 | |
|---|---|---|---|---|---|---|
551
FirstService
FSV
$6.13B
| $3.23M | 0.01% |
21,813
-279
| -1% | -$40.6K |
|
552
Halliburton
HAL
$27.5B
| $3.22M | 0.01% |
150,161
+14,469
| +11% | +$303K |
|
553
Enbridge
ENB
$113B
| $3.22M | 0.01% |
88,500
-1,568
| -2% | -$55.1K |
|
554
MarketAxess Holdings
MKTX
$5.72B
| $3.21M | 0.01% |
6,455
-608
| -9% | -$324K |
|
555
Bright Horizons
BFAM
$3.8B
| $3.21M | 0.01% |
18,704
-6,710
| -26% | -$1.11M |
|
556
SLB Ltd
SLB
$77.1B
| $3.19M | 0.01% |
117,172
+56,586
| +93% | +$1.49M |
|
557
Ameriprise Financial
AMP
$49.9B
| $3.18M | 0.01% |
13,679
+84
| +0.6% | +$18.2K |
|
558
Cloudflare
NET
$118B
| $3.17M | 0.01% |
45,133
+1,248
| +3% | +$96.2K |
|
559
iShares Currency Hedged MSCI Emerging Markets
HEEM
$294M
| $3.17M | 0.01% |
98,258
| – | – |
|
|
CTLT
560
DELISTED
CATALENT, INC.
CTLT
| $3.17M | 0.01% |
30,059
-821
| -3% | -$91.6K |
|
561
J&J Snack Foods
JJSF
$1.69B
| $3.15M | 0.01% |
20,048
+1,891
| +10% | +$297K |
|
562
Royal Gold
RGLD
$19.3B
| $3.13M | 0.01% |
29,035
| – | – |
|
563
D.R. Horton
DHI
$41.5B
| $3.11M | 0.01% |
34,877
-187
| -0.5% | -$14.6K |
|
564
Woodward
WWD
$21.3B
| $3.1M | 0.01% |
25,663
+72
| +0.3% | +$8.58K |
|
565
Truist Financial
TFC
$64.7B
| $3.09M | 0.01% |
53,025
-9,816
| -16% | -$538K |
|
566
ARK Israel Innovative Technology ETF
IZRL
$140M
| $3.05M | 0.01% |
97,105
+615
| +0.6% | +$20.4K |
|
567
CrowdStrike
CRWD
$228B
| $3.04M | 0.01% |
66,592
+1,324
| +2% | +$70K |
|
568
Vanguard S&P 500 Value ETF
VOOV
$6.78B
| $3.04M | 0.01% |
22,214
+2,761
| +14% | +$359K |
|
569
Opendoor
OPEN
$3.49B
| $3M | 0.01% |
146,530
-8,676
| -6% | -$229K |
|
570
Insulet
PODD
$9.99B
| $3M | 0.01% |
11,489
+611
| +6% | +$164K |
|
571
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$19.8B
| $3M | 0.01% |
58,126
-29,893
| -34% | -$1.54M |
|
572
Ziff Davis
ZD
$1.88B
| $3M | 0.01% |
28,739
-265
| -0.9% | -$24.9K |
|
573
Medpace
MEDP
$16.4B
| $2.98M | 0.01% |
18,194
-7,939
| -30% | -$1.21M |
|
574
MetLife
MET
$61.7B
| $2.98M | 0.01% |
49,048
-1,640
| -3% | -$90.5K |
|
575
Amplify Cybersecurity ETF
HACK
$3.02B
| $2.98M | 0.01% |
54,275
-4,725
| -8% | -$276K |
|
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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.