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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
-12.12%
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
$1.23B
AUM Growth
-$138M
Cap. Flow
+$87.1M
Cap. Flow %
7.07%
Top 10 Hldgs %
28.99%
Holding
134
New
17
Increased
54
Reduced
20
Closed
13

Top Buys

Rank Stock Value
1
STJ
St Jude Medical
STJ
+$37.8M
2
AET
Aetna Inc
AET
+$26.5M
3
ACHC icon
Acadia Healthcare
ACHC
+$23.1M
4
TEVA icon
Teva Pharmaceuticals
TEVA
+$21.1M
5
CHMA
Chiasma, Inc. Common Stock
CHMA
+$13M

Top Sells

Rank Stock Value
1
MDT icon
Medtronic
MDT
+$42.2M
2
HUM icon
Humana
HUM
+$25.2M
3
THOR
THORATEC CORPORATION
THOR
+$24.5M
4
BHC icon
Bausch Health
BHC
+$17.9M
5
MCK icon
McKesson
MCK
+$16.8M

Sector Composition

Rank Sector Weight
1 Healthcare 76.04%
2 Financials 3.43%
3 Technology 0.48%
4 Industrials 0.41%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MDT icon
126
Medtronic
MDT
$112B
– –
-570,000
Closed -$42.2M
PRGO icon
127
Perrigo
PRGO
$1.78B
– –
-47,000
Closed -$8.69M
FRTX
128
DELISTED
Fresh Tracks Therapeutics, Inc. Common Stock
FRTX
– –
-581
Closed -$1.28M
CERN
129
DELISTED
Cerner Corp
CERN
– –
-70,000
Closed -$4.83M
TTPH
130
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
– –
-2,150
Closed -$2.04M
WCG
131
DELISTED
Wellcare Health Plans, Inc.
WCG
– –
-60,000
Closed -$5.09M
KYTH
132
DELISTED
KYTHERA BIOPHARMACEUTICALS, INC COM
KYTH
– –
-139,250
Closed -$10.5M
RCPT
133
DELISTED
RECEPTOS INC COM STK (DE)
RCPT
– –
-68,250
Closed -$13M
IMDZ
134
DELISTED
Immune Design Corp.
IMDZ
– –
-55,000
Closed -$1.14M
2 3 4 5
6

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Rock Springs Capital Management's Q3 2015 Portfolio in Review

As of Q3 2015, Rock Springs Capital Management held 134 positions worth $1.23B, down 10% from $1.37B the previous quarter. Its ten largest holdings account for 29% of the portfolio.

Rock Springs Capital Management deployed $87.1M of net new capital in Q3 2015, opening 17 new positions and adding to 54 existing holdings. Its largest new stake was St Jude Medical: 530,000 shares worth $33.4M.

By sector, the portfolio is most concentrated in Healthcare at 76% of assets, down from 77% a quarter earlier, followed by Financials and Technology.

On the sell side, the largest reduction was THORATEC CORPORATION, an estimated $24.5M trimmed.

  • Rock Springs Capital Management's largest Q3 2015 buy was St Jude Medical: 530,000 shares worth $33.4M.
  • Rock Springs Capital Management added most to Aetna Inc in Q3 2015, an estimated $26.5M increase.
  • Rock Springs Capital Management's biggest Q3 2015 reduction was THORATEC CORPORATION, cutting an estimated $24.5M.
  • Rock Springs Capital Management fully exited Medtronic in Q3 2015, selling an estimated $42.2M.
  • Rock Springs Capital Management's ten largest holdings make up 29% of its $1.23B portfolio in Q3 2015.
  • Rock Springs Capital Management opened 17 new positions and closed 13 in Q3 2015.
  • Rock Springs Capital Management's portfolio value fell 10% quarter-over-quarter to $1.23B.

Based on Rock Springs Capital Management's 13F filing for Q3 2015, filed 16 Nov 2015.