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Rock Springs Capital Management Portfolio holdings

AUM $1.7B
1-Year Est. Return 93.03%
This Fund
S&P 500
This Quarter Est. Return
+16.12%
1 Year Est. Return
+93.03%
3 Year Est. Return
+228.43%
5 Year Est. Return
+368.14%
10 Year Est. Return
+4,607.77%
AUM
$3.94B
AUM Growth
+$295M
Cap. Flow
+$29.2M
Cap. Flow %
0.74%
Top 10 Hldgs %
26.69%
Holding
163
New
20
Increased
50
Reduced
30
Closed
15

Top Buys

Rank Stock Value
1
HZNP
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
+$44.7M
2
ACAD icon
Acadia Pharmaceuticals
ACAD
+$22.4M
3
INZY
Inozyme Pharma
INZY
+$21.9M
4
KYMR icon
Kymera Therapeutics
KYMR
+$21.7M
5
HUM icon
Humana
HUM
+$20.7M

Top Sells

Rank Stock Value
1
PTLA
Portola Pharmaceuticals, Inc.
PTLA
+$41.5M
2
VRTX icon
Vertex Pharmaceuticals
VRTX
+$32M
3
CI icon
Cigna
CI
+$30.2M
4
AMGN icon
Amgen
AMGN
+$29.7M
5
ALLO icon
Allogene Therapeutics
ALLO
+$18.9M

Sector Composition

Rank Sector Weight
1 Healthcare 90.05%
2 Consumer Staples 1.43%
3 Consumer Discretionary 0.93%
4 Industrials 0.32%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
GBT
151
DELISTED
Global Blood Therapeutics, Inc.
GBT
– –
-288,279
Closed -$18.2M
MYOK
152
DELISTED
MyoKardia, Inc. Common Stock
MYOK
– –
-172,716
Closed -$16.7M
PTLA
153
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
– –
-2,306,196
Closed -$41.5M
BHVN
154
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
– –
-203,817
Closed -$14.9M
3 4 5 6
7

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Rock Springs Capital Management's Q3 2020 Portfolio in Review

As of Q3 2020, Rock Springs Capital Management held 163 positions worth $3.94B, up 8.1% from $3.65B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

Rock Springs Capital Management's Q3 2020 filing shows 20 new, 50 increased, 30 reduced and 15 closed positions. Its largest new stake was Horizon Therapeutics Public Limited Company Ordinary Shares: 650,000 shares worth $50.5M. The largest sale was Portola Pharmaceuticals, Inc., an estimated $41.5M.

By sector, the portfolio is most concentrated in Healthcare at 90% of assets, down from 92% a quarter earlier, followed by Consumer Staples and Consumer Discretionary.

  • Rock Springs Capital Management's largest Q3 2020 buy was Horizon Therapeutics Public Limited Company Ordinary Shares: 650,000 shares worth $50.5M.
  • Rock Springs Capital Management added most to Acadia Pharmaceuticals in Q3 2020, an estimated $22.4M increase.
  • Rock Springs Capital Management's biggest Q3 2020 reduction was Vertex Pharmaceuticals, cutting an estimated $32M.
  • Rock Springs Capital Management fully exited Portola Pharmaceuticals, Inc. in Q3 2020, selling an estimated $41.5M.
  • Rock Springs Capital Management's ten largest holdings make up 27% of its $3.94B portfolio in Q3 2020.
  • Rock Springs Capital Management opened 20 new positions and closed 15 in Q3 2020.
  • Rock Springs Capital Management's portfolio value rose 8.1% quarter-over-quarter to $3.94B.

Based on Rock Springs Capital Management's 13F filing for Q3 2020, filed 16 Nov 2020.