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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
+15.83%
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
$434M
AUM Growth
+$154M
Cap. Flow
+$130M
Cap. Flow %
30.03%
Top 10 Hldgs %
39.11%
Holding
88
New
19
Increased
48
Reduced
6
Closed
13

Top Buys

Rank Stock Value
1
JNJ icon
Johnson & Johnson
JNJ
+$23.2M
2
AVDL
Avadel Pharmaceuticals
AVDL
+$8.04M
3
ABBV icon
AbbVie
ABBV
+$6.82M
4
ITMN
INTERMUNE INC
ITMN
+$6.35M
5
AGN
Allergan plc
AGN
+$6.29M

Top Sells

Rank Stock Value
1
XLV icon
State Street Health Care Select Sector SPDR ETF
XLV
+$9.8M
2
GENT
GENTIUM SPA ADS
GENT
+$6.82M
3
AET
Aetna Inc
AET
+$4.27M
4
PBYI icon
Puma Biotechnology
PBYI
+$3.26M
5
EW icon
Edwards Lifesciences
EW
+$2.79M

Sector Composition

Rank Sector Weight
1 Healthcare 79.37%
2 Industrials 1.53%
3 Technology 0.49%
4 Financials 0%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
JAZZ icon
51
Jazz Pharmaceuticals
JAZZ
$16.7B
$2.74M 0.63%
19,750
+6,750
+52% +$1.02M
VTRS icon
52
Viatris
VTRS
$18.9B
$2.59M 0.6%
53,000
+16,500
+45% +$801K
INVA icon
53
Innoviva
INVA
$1.48B
$2.58M 0.59%
103,313
+25,130
+32% +$736K
RARE icon
54
Ultragenyx Pharmaceutical
RARE
$2.55B
$2.52M 0.58%
+51,500
New +$2.65M
PRTA icon
55
Prothena Corp
PRTA
$450M
$2.49M 0.57%
+65,000
New +$2.1M
CERN
56
DELISTED
Cerner Corp
CERN
$2.36M 0.55%
42,000
+8,000
+24% +$462K
REGN icon
57
Regeneron Pharmaceuticals
REGN
$80.8B
$2.25M 0.52%
+7,500
New +$2.31M
CBST
58
DELISTED
CUBIST PHARMACEUTICALS INC
CBST
$2.19M 0.51%
30,000
+12,500
+71% +$932K
CSLT
59
DELISTED
CASTLIGHT HEALTH, INC.
CSLT
$2.12M 0.49%
+100,000
New +$2.9M
RCPT
60
DELISTED
RECEPTOS INC COM STK (DE)
RCPT
$2.1M 0.48%
+50,000
New +$2.15M
MD icon
61
Pediatrix Medical
MD
$2.2B
$2.01M 0.46%
32,500
+500
+2% +$29.1K
ABCO
62
DELISTED
Advisory Board Co
ABCO
$2M 0.46%
31,075
+6,575
+27% +$417K
WX
63
DELISTED
WUXI PHARMATECH, CAYMAN INC REPSTG 8 ORD SHS
WX
$1.94M 0.45%
52,500
+19,000
+57% +$697K
KIN
64
DELISTED
Kindred Biosciences, Inc.
KIN
$1.71M 0.4%
+92,500
New +$1.76M
ALKS icon
65
Alkermes
ALKS
$8.25B
$1.56M 0.36%
35,500
+12,250
+53% +$583K
NVAX icon
66
Novavax
NVAX
$1.31B
$1.47M 0.34%
16,250
+5,250
+48% +$587K
ARWR icon
67
Arrowhead Research
ARWR
$12.4B
$1.23M 0.28%
+75,000
New +$1.32M
ETRM
68
DELISTED
EnteroMedics Inc.
ETRM
$1.18M 0.27%
619
+286
+86% +$677K
INFI
69
DELISTED
Infinity Pharmaceuticals, Inc.
INFI
$1.16M 0.27%
97,500
+1,500
+2% +$20.1K
VRTX icon
70
Vertex Pharmaceuticals
VRTX
$126B
$1.13M 0.26%
16,000
-4,000
-20% -$317K
AVNR
71
DELISTED
AVANIR PHARMACEUTICALS, INC CL A
AVNR
$1.1M 0.25%
300,000
– –
GWPH
72
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
$1.05M 0.24%
+17,750
New +$1.06M
EXEL icon
73
Exelixis
EXEL
$13.4B
$881K 0.2%
249,000
+99,000
+66% +$674K
CNCE
74
DELISTED
Concert Pharmaceuticals, Inc.
CNCE
$801K 0.18%
+59,553
New +$841K
PBYI icon
75
Puma Biotechnology
PBYI
$454M
$388K 0.09%
3,728
-27,772
-88% -$3.26M
1 2
3
4

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Rock Springs Capital Management's Q1 2014 Portfolio in Review

As of Q1 2014, Rock Springs Capital Management held 88 positions worth $434M, up 55% from $280M the previous quarter. Its ten largest holdings account for 39% of the portfolio.

Rock Springs Capital Management deployed $130M of net new capital in Q1 2014, opening 19 new positions and adding to 48 existing holdings. Its largest new stake was Johnson & Johnson: 250,000 shares worth $24.6M.

By sector, the portfolio is most concentrated in Healthcare at 79% of assets, up from 73% a quarter earlier, followed by Industrials and Technology.

On the sell side, the largest reduction was State Street Health Care Select Sector SPDR ETF, an estimated $9.8M trimmed.

  • Rock Springs Capital Management's largest Q1 2014 buy was Johnson & Johnson: 250,000 shares worth $24.6M.
  • Rock Springs Capital Management added most to AbbVie in Q1 2014, an estimated $6.82M increase.
  • Rock Springs Capital Management's biggest Q1 2014 reduction was State Street Health Care Select Sector SPDR ETF, cutting an estimated $9.8M.
  • Rock Springs Capital Management fully exited GENTIUM SPA ADS in Q1 2014, selling an estimated $6.82M.
  • Rock Springs Capital Management's ten largest holdings make up 39% of its $434M portfolio in Q1 2014.
  • Rock Springs Capital Management opened 19 new positions and closed 13 in Q1 2014.
  • Rock Springs Capital Management's portfolio value rose 55% quarter-over-quarter to $434M.

Based on Rock Springs Capital Management's 13F filing for Q1 2014, filed 15 May 2014.