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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
+15.18%
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
$1.32B
AUM Growth
+$87.8M
Cap. Flow
+$6.46M
Cap. Flow %
0.49%
Top 10 Hldgs %
27.55%
Holding
138
New
17
Increased
50
Reduced
27
Closed
18

Top Buys

Rank Stock Value
1
BXLT
BAXALTA INC COM STK (DE)
BXLT
+$28.2M
2
AAAP
Advanced Accelerator Applications S.A.
AAAP
+$22.2M
3
WCG
Wellcare Health Plans, Inc.
WCG
+$17.8M
4
ACRS icon
Aclaris Therapeutics
ACRS
+$17.5M
5
AGN
Allergan plc
AGN
+$10.7M

Top Sells

Rank Stock Value
1
ABBV icon
AbbVie
ABBV
+$38M
2
STJ
St Jude Medical
STJ
+$33.4M
3
TMH
Team Health Holdings Inc
TMH
+$17M
4
ADPT
Adeptus Health Inc
ADPT
+$14.4M
5
TRNX
TORNIER N V SHARES (NLD)
TRNX
+$13.5M

Sector Composition

Rank Sector Weight
1 Healthcare 77%
2 Financials 3.37%
3 Industrials 0.48%
4 Technology 0%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ADXS
126
DELISTED
Advaxis Inc
ADXS
– –
-22,467
Closed -$3.45M
KIN
127
DELISTED
Kindred Biosciences, Inc.
KIN
– –
-275,000
Closed -$1.43M
ONCE
128
PUT
DELISTED
Spark Therapeutics, Inc. Common Stock
ONCE
– –
-45,700
Closed -$1.91M
CNXR
129
DELISTED
Connecture, Inc.
CNXR
– –
-365,000
Closed -$1.66M
ADPT
130
DELISTED
Adeptus Health Inc
ADPT
– –
-178,000
Closed -$14.4M
TMH
131
DELISTED
Team Health Holdings Inc
TMH
– –
-315,000
Closed -$17M
STJ
132
DELISTED
St Jude Medical
STJ
– –
-530,000
Closed -$33.4M
ROKA
133
DELISTED
Sorrento Tech, Inc. Common Stock
ROKA
– –
-25,000
Closed -$485K
ZSPH
134
DELISTED
ZS PHARMA INC COMS TK (DE)
ZSPH
– –
-155,000
Closed -$10.2M
WX
135
DELISTED
WUXI PHARMATECH, CAYMAN INC REPSTG 8 ORD SHS
WX
– –
-175,000
Closed -$7.56M
THOR
136
DELISTED
THORATEC CORPORATION
THOR
– –
-120,000
Closed -$7.59M
TRNX
137
DELISTED
TORNIER N V SHARES (NLD)
TRNX
– –
-660,000
Closed -$13.5M
RPTP
138
DELISTED
RAPTOR PHARMACEUTICAL CORP COM STK (DE)
RPTP
– –
-305,000
Closed -$1.84M
2 3 4 5
6

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GAM
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FACM
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Rock Springs Capital Management's Q4 2015 Portfolio in Review

As of Q4 2015, Rock Springs Capital Management held 138 positions worth $1.32B, up 7.1% from $1.23B the previous quarter. Its ten largest holdings account for 28% of the portfolio.

Rock Springs Capital Management's Q4 2015 filing shows 17 new, 50 increased, 27 reduced and 18 closed positions. Its largest new stake was BAXALTA INC COM STK (DE): 810,000 shares worth $31.6M. The largest sale was AbbVie, an estimated $38M.

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

  • Rock Springs Capital Management's largest Q4 2015 buy was BAXALTA INC COM STK (DE): 810,000 shares worth $31.6M.
  • Rock Springs Capital Management added most to Allergan plc in Q4 2015, an estimated $10.7M increase.
  • Rock Springs Capital Management's biggest Q4 2015 reduction was AbbVie, cutting an estimated $38M.
  • Rock Springs Capital Management fully exited St Jude Medical in Q4 2015, selling an estimated $33.4M.
  • Rock Springs Capital Management's ten largest holdings make up 28% of its $1.32B portfolio in Q4 2015.
  • Rock Springs Capital Management opened 17 new positions and closed 18 in Q4 2015.
  • Rock Springs Capital Management's portfolio value rose 7.1% quarter-over-quarter to $1.32B.

Based on Rock Springs Capital Management's 13F filing for Q4 2015, filed 16 Feb 2016.