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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
+10.56%
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
$1.98B
AUM Growth
+$247M
Cap. Flow
+$143M
Cap. Flow %
7.22%
Top 10 Hldgs %
27.18%
Holding
159
New
18
Increased
48
Reduced
15
Closed
10

Top Buys

Rank Stock Value
1
MDT icon
Medtronic
MDT
+$33.7M
2
UNH icon
UnitedHealth
UNH
+$26.1M
3
AET
Aetna Inc
AET
+$23.7M
4
MRSN
Mersana Therapeutics
MRSN
+$21.1M
5
TMO icon
Thermo Fisher Scientific
TMO
+$18.5M

Top Sells

Rank Stock Value
1
LLY icon
Eli Lilly
LLY
+$27.3M
2
SHPG
Shire pic
SHPG
+$24.2M
3
BMY icon
Bristol-Myers Squibb
BMY
+$21.9M
4
AMGN icon
Amgen
AMGN
+$16.1M
5
PTHN
Patheon N.V.
PTHN
+$10.5M

Sector Composition

Rank Sector Weight
1 Healthcare 79.63%
2 Financials 3.78%
3 Consumer Discretionary 1.13%
4 Industrials 0%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TSRO
1
DELISTED
TESARO, Inc.
TSRO
$68.6M 3.46%
490,500
+15,600
+3% +$2.26M
ACHC icon
2
Acadia Healthcare
ACHC
$2.52B
$66.7M 3.37%
1,350,000
+75,000
+6% +$3.32M
AET
3
DELISTED
Aetna Inc
AET
$58.9M 2.97%
388,000
+168,000
+76% +$23.7M
UNH icon
4
UnitedHealth
UNH
$382B
$58.2M 2.94%
314,000
+149,000
+90% +$26.1M
ALXN
5
DELISTED
Alexion Pharmaceuticals
ALXN
$56.3M 2.84%
463,000
+6,100
+1% +$710K
PCRX icon
6
Pacira BioSciences
PCRX
$1.04B
$49.7M 2.51%
1,042,500
+42,500
+4% +$1.97M
MRK icon
7
Merck
MRK
$322B
$48.6M 2.45%
794,384
+8,384
+1% +$510K
CI icon
8
Cigna
CI
$78.4B
$45.2M 2.28%
270,000
– –
ISRG icon
9
Intuitive Surgical
ISRG
$127B
$44.9M 2.27%
432,000
– –
RDUS
10
DELISTED
Radius Health, Inc.
RDUS
$41.2M 2.08%
910,250
– –
AGN
11
DELISTED
Allergan plc
AGN
$37.9M 1.91%
155,900
-10,100
-6% -$2.37M
ONCE
12
DELISTED
Spark Therapeutics, Inc. Common Stock
ONCE
$37.3M 1.89%
625,000
– –
GWPH
13
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
$36.6M 1.85%
365,500
+9,000
+3% +$969K
MDT icon
14
Medtronic
MDT
$112B
$35.5M 1.79%
+400,000
New +$33.7M
WCG
15
DELISTED
Wellcare Health Plans, Inc.
WCG
$35.5M 1.79%
197,500
-37,000
-16% -$6.13M
PRAH
16
DELISTED
PRA Health Sciences, Inc.
PRAH
$34.7M 1.75%
462,500
+5,000
+1% +$347K
AAAP
17
DELISTED
Advanced Accelerator Applications S.A.
AAAP
$32.8M 1.66%
840,000
-10,000
-1% -$376K
HUM icon
18
Humana
HUM
$43.9B
$31.9M 1.61%
132,500
– –
CELG
19
DELISTED
Celgene Corp
CELG
$31.8M 1.61%
245,000
+2,500
+1% +$306K
PEN icon
20
Penumbra
PEN
$12.6B
$27.2M 1.38%
310,500
– –
MDCO
21
DELISTED
Medicines Co
MDCO
$26.4M 1.33%
694,446
-5,554
-0.8% -$247K
TBPH icon
22
Theravance Biopharma
TBPH
$873M
$23.9M 1.21%
600,000
– –
JNJ icon
23
Johnson & Johnson
JNJ
$640B
$23.2M 1.17%
175,000
– –
LOXO
24
DELISTED
Loxo Oncology, Inc
LOXO
$23.1M 1.17%
288,000
+107,000
+59% +$5.93M
COLL icon
25
Collegium Pharmaceutical
COLL
$1.18B
$22.5M 1.14%
1,798,195
+98,195
+6% +$970K
1
2 3 4 5

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GAM
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Rock Springs Capital Management's Q2 2017 Portfolio in Review

As of Q2 2017, Rock Springs Capital Management held 159 positions worth $1.98B, up 14% from $1.73B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

Rock Springs Capital Management deployed $143M of net new capital in Q2 2017, opening 18 new positions and adding to 48 existing holdings. Its largest new stake was Medtronic: 400,000 shares worth $35.5M.

By sector, the portfolio is most concentrated in Healthcare at 80% of assets, down from 82% a quarter earlier, followed by Financials and Consumer Discretionary.

On the sell side, the largest reduction was Bristol-Myers Squibb, an estimated $21.9M trimmed.

  • Rock Springs Capital Management's largest Q2 2017 buy was Medtronic: 400,000 shares worth $35.5M.
  • Rock Springs Capital Management added most to UnitedHealth in Q2 2017, an estimated $26.1M increase.
  • Rock Springs Capital Management's biggest Q2 2017 reduction was Bristol-Myers Squibb, cutting an estimated $21.9M.
  • Rock Springs Capital Management fully exited Eli Lilly in Q2 2017, selling an estimated $27.3M.
  • Rock Springs Capital Management's ten largest holdings make up 27% of its $1.98B portfolio in Q2 2017.
  • Rock Springs Capital Management opened 18 new positions and closed 10 in Q2 2017.
  • Rock Springs Capital Management's portfolio value rose 14% quarter-over-quarter to $1.98B.

Based on Rock Springs Capital Management's 13F filing for Q2 2017, filed 14 Aug 2017.