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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
+15.5%
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
$2.17B
AUM Growth
+$187M
Cap. Flow
-$13.4M
Cap. Flow %
-0.62%
Top 10 Hldgs %
27.68%
Holding
163
New
13
Increased
39
Reduced
20
Closed
16

Top Buys

Rank Stock Value
1
UNH icon
UnitedHealth
UNH
+$28M
2
IRTC icon
iRhythm Holdings
IRTC
+$17.5M
3
PBYI icon
Puma Biotechnology
PBYI
+$13.4M
4
PTLA
Portola Pharmaceuticals, Inc.
PTLA
+$10.8M
5
MOH icon
Molina Healthcare
MOH
+$10.4M

Top Sells

Rank Stock Value
1
AGN
Allergan plc
AGN
+$37.9M
2
HUM icon
Humana
HUM
+$31.9M
3
HOLX
Hologic
HOLX
+$19.1M
4
MDT icon
Medtronic
MDT
+$12.7M
5
WBA
Walgreens Boots Alliance
WBA
+$6.74M

Sector Composition

Rank Sector Weight
1 Healthcare 80.49%
2 Financials 3.75%
3 Consumer Discretionary 0.9%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SIOX
151
DELISTED
Sio Gene Therapies Inc. Common Stock
SIOX
– –
-15,625
Closed -$2.9M
OTIC
152
DELISTED
Otonomy, Inc.
OTIC
– –
-210,000
Closed -$3.96M
HRC
153
DELISTED
HILL-ROM HOLDINGS, INC.
HRC
– –
-45,000
Closed -$3.58M
PTLA
154
CALL
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
– –
-140,000
Closed -$7.86M
AGN
155
DELISTED
Allergan plc
AGN
– –
-155,900
Closed -$37.9M
GNCA
156
DELISTED
Genocea Biosciences, Inc.
GNCA
– –
-60,000
Closed -$2.51M
NVDQ
157
DELISTED
Novadaq Technologies Inc.
NVDQ
– –
-150,000
Closed -$1.76M
3 4 5 6
7

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Rock Springs Capital Management's Q3 2017 Portfolio in Review

As of Q3 2017, Rock Springs Capital Management held 163 positions worth $2.17B, up 9.5% from $1.98B the previous quarter. Its ten largest holdings account for 28% of the portfolio.

Rock Springs Capital Management's Q3 2017 filing shows 13 new, 39 increased, 20 reduced and 16 closed positions. Its largest new stake was iRhythm Holdings: 386,000 shares worth $20M. The largest sale was Allergan plc, an estimated $37.9M.

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

  • Rock Springs Capital Management's largest Q3 2017 buy was iRhythm Holdings: 386,000 shares worth $20M.
  • Rock Springs Capital Management added most to UnitedHealth in Q3 2017, an estimated $28M increase.
  • Rock Springs Capital Management's biggest Q3 2017 reduction was Medtronic, cutting an estimated $12.7M.
  • Rock Springs Capital Management fully exited Allergan plc in Q3 2017, selling an estimated $37.9M.
  • Rock Springs Capital Management's ten largest holdings make up 28% of its $2.17B portfolio in Q3 2017.
  • Rock Springs Capital Management opened 13 new positions and closed 16 in Q3 2017.
  • Rock Springs Capital Management's portfolio value rose 9.5% quarter-over-quarter to $2.17B.

Based on Rock Springs Capital Management's 13F filing for Q3 2017, filed 14 Nov 2017.