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William Blair Investment Management Portfolio holdings
AUM
$33.3B
1-Year Est. Return
44.76%
This Fund
S&P 500
This Quarter
Est. Return
+5.82%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$30.9B
AUM Growth
+$843M
(+2.8%)
Cap. Flow
-$358M
Cap. Flow
% of AUM
-1.16%
Top 10 Holdings %
Top 10 Hldgs %
16.89%
Holding
389
New
33
Increased
152
Reduced
179
Closed
22
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Charles River Laboratories
CRL
|
+$239M |
| 2 |
Ryanair
RYAAY
|
+$210M |
| 3 |
Dynatrace
DT
|
+$201M |
| 4 |
Certara
CERT
|
+$155M |
| 5 |
Leslie's
LESL
|
+$148M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SolarEdge
SEDG
|
+$265M |
| 2 |
TSMC
TSM
|
+$235M |
| 3 |
Steris
STE
|
+$187M |
| 4 |
MongoDB
MDB
|
+$173M |
| 5 |
Etsy
ETSY
|
+$170M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 24.51% |
| 2 | Healthcare | 21.08% |
| 3 | Industrials | 14.45% |
| 4 | Consumer Discretionary | 12.96% |
| 5 | Financials | 7.5% |
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William Blair Investment Management's Q1 2021 Portfolio in Review
As of Q1 2021, William Blair Investment Management held 389 positions worth $30.9B, up 2.8% from $30B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
William Blair Investment Management's Q1 2021 filing shows 33 new, 152 increased, 179 reduced and 22 closed positions. Its largest new stake was Dynatrace: 4,138,525 shares worth $200M. The largest sale was SolarEdge, an estimated $265M.
By sector, the portfolio is most concentrated in Technology at 25% of assets, down from 27% a quarter earlier, followed by Healthcare and Industrials.
- William Blair Investment Management's largest Q1 2021 buy was Dynatrace: 4,138,525 shares worth $200M.
- William Blair Investment Management added most to Charles River Laboratories in Q1 2021, an estimated $239M increase.
- William Blair Investment Management's biggest Q1 2021 reduction was TSMC, cutting an estimated $235M.
- William Blair Investment Management fully exited SolarEdge in Q1 2021, selling an estimated $265M.
- William Blair Investment Management's ten largest holdings make up 17% of its $30.9B portfolio in Q1 2021.
- William Blair Investment Management opened 33 new positions and closed 22 in Q1 2021.
- William Blair Investment Management's portfolio value rose 2.8% quarter-over-quarter to $30.9B.
Based on William Blair Investment Management's 13F filing for Q1 2021, filed 13 May 2021.