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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
+18.11%
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
$1.07B
AUM Growth
+$214M
Cap. Flow
+$110M
Cap. Flow %
10.26%
Top 10 Hldgs %
29.29%
Holding
121
New
28
Increased
49
Reduced
15
Closed
16

Top Buys

Rank Stock Value
1
PFE icon
Pfizer
PFE
+$25.5M
2
RDUS
Radius Health, Inc.
RDUS
+$18M
3
LLY icon
Eli Lilly
LLY
+$16.4M
4
BHC icon
Bausch Health
BHC
+$16.3M
5
TMO icon
Thermo Fisher Scientific
TMO
+$12.9M

Top Sells

Rank Stock Value
1
COV
COVIDIEN PLC COM SHS NEW (IRELAND)
COV
+$30.2M
2
MRK icon
Merck
MRK
+$25.6M
3
STJ
St Jude Medical
STJ
+$21.8M
4
AVNR
AVANIR PHARMACEUTICALS, INC CL A
AVNR
+$18.6M
5
HRC
HILL-ROM HOLDINGS, INC.
HRC
+$10.3M

Sector Composition

Rank Sector Weight
1 Healthcare 75.22%
2 Financials 1.56%
3 Industrials 0.97%
4 Technology 0.96%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NBIX icon
26
Neurocrine Biosciences
NBIX
$16.6B
$14.9M 1.39%
375,000
+15,000
+4% +$537K
TMO icon
27
Thermo Fisher Scientific
TMO
$220B
$13.4M 1.26%
+100,000
New +$12.9M
OREX
28
DELISTED
Orexigen Therapeutics, Inc.
OREX
$12.1M 1.14%
155,000
-13,500
-8% -$837K
TSRO
29
DELISTED
TESARO, Inc.
TSRO
$12.1M 1.13%
210,000
+22,500
+12% +$1.06M
ISRG icon
30
Intuitive Surgical
ISRG
$134B
$11.4M 1.06%
202,500
+36,000
+22% +$2.04M
INOV
31
DELISTED
Inovalon Holdings, Inc. Class A Common Stock
INOV
$11.3M 1.06%
+375,000
New +$11.2M
RCPT
32
DELISTED
RECEPTOS INC COM STK (DE)
RCPT
$10.7M 1%
65,000
– –
INCY icon
33
Incyte
INCY
$24.4B
$10.4M 0.97%
113,000
– –
SRCL
34
DELISTED
Stericycle Inc
SRCL
$10.3M 0.97%
73,500
+23,500
+47% +$3.17M
ICPT
35
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
$10.2M 0.95%
36,000
+19,600
+120% +$4.24M
COO icon
36
Cooper Companies
COO
$14.5B
$10.1M 0.95%
216,000
– –
EHC icon
37
Encompass Health
EHC
$12.4B
$9.76M 0.91%
+276,540
New +$9.46M
LH icon
38
Labcorp
LH
$25.9B
$9.46M 0.88%
+87,300
New +$8.98M
HTWR
39
DELISTED
HEARTWARE INTERNATIONAL INC COM STK (DE)
HTWR
$9.22M 0.86%
105,000
-15,000
-13% -$1.27M
SRGA
40
DELISTED
Surgalign Holdings, Inc. Common Stock
SRGA
$9.19M 0.86%
62,000
– –
PRTA icon
41
Prothena Corp
PRTA
$450M
$9.06M 0.85%
237,500
+35,000
+17% +$898K
DHR icon
42
Danaher
DHR
$144B
$8.96M 0.84%
156,966
– –
MDCO
43
DELISTED
Medicines Co
MDCO
$8.41M 0.79%
300,000
+53,700
+22% +$1.51M
AVDL
44
DELISTED
Avadel Pharmaceuticals
AVDL
$8.27M 0.77%
460,000
-215,000
-32% -$3.37M
PRAH
45
DELISTED
PRA Health Sciences, Inc.
PRAH
$8.22M 0.77%
285,000
– –
VRTX icon
46
Vertex Pharmaceuticals
VRTX
$126B
$8.02M 0.75%
68,000
+5,000
+8% +$599K
XLV icon
47
State Street Health Care Select Sector SPDR ETF
XLV
$42.7B
$7.97M 0.75%
110,000
-30,000
-21% -$2.14M
PRGO icon
48
Perrigo
PRGO
$1.78B
$7.78M 0.73%
47,000
+4,500
+11% +$718K
NVDQ
49
DELISTED
Novadaq Technologies Inc.
NVDQ
$7.71M 0.72%
475,000
+97,500
+26% +$1.45M
INSM icon
50
Insmed
INSM
$28.6B
$7.59M 0.71%
+365,000
New +$6.43M
1
2
3 4 5

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Rock Springs Capital Management's Q1 2015 Portfolio in Review

As of Q1 2015, Rock Springs Capital Management held 121 positions worth $1.07B, up 25% from $855M the previous quarter. Its ten largest holdings account for 29% of the portfolio.

Rock Springs Capital Management deployed $110M of net new capital in Q1 2015, opening 28 new positions and adding to 49 existing holdings. Its largest new stake was Pfizer: 801,040 shares worth $26.4M.

By sector, the portfolio is most concentrated in Healthcare at 75% of assets, up from 73% a quarter earlier, followed by Financials and Industrials.

On the sell side, the largest reduction was Avadel Pharmaceuticals, an estimated $3.37M trimmed.

  • Rock Springs Capital Management's largest Q1 2015 buy was Pfizer: 801,040 shares worth $26.4M.
  • Rock Springs Capital Management added most to Bausch Health in Q1 2015, an estimated $16.3M increase.
  • Rock Springs Capital Management's biggest Q1 2015 reduction was Avadel Pharmaceuticals, cutting an estimated $3.37M.
  • Rock Springs Capital Management fully exited COVIDIEN PLC COM SHS NEW (IRELAND) in Q1 2015, selling an estimated $30.2M.
  • Rock Springs Capital Management's ten largest holdings make up 29% of its $1.07B portfolio in Q1 2015.
  • Rock Springs Capital Management opened 28 new positions and closed 16 in Q1 2015.
  • Rock Springs Capital Management's portfolio value rose 25% quarter-over-quarter to $1.07B.

Based on Rock Springs Capital Management's 13F filing for Q1 2015, filed 15 May 2015.