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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
-8.24%
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
$3.44B
AUM Growth
-$537M
Cap. Flow
+$101M
Cap. Flow %
2.93%
Top 10 Hldgs %
35%
Holding
141
New
7
Increased
68
Reduced
12
Closed
10

Top Buys

Rank Stock Value
1
ALGN icon
Align Technology
ALGN
+$42.4M
2
PEN icon
Penumbra
PEN
+$31.3M
3
XLV icon
State Street Health Care Select Sector SPDR ETF
XLV
+$26.2M
4
HUM icon
Humana
HUM
+$25.7M
5
MRTX
Mirati Therapeutics, Inc. Common Stock
MRTX
+$18.1M

Top Sells

Rank Stock Value
1
HCA icon
HCA Healthcare
HCA
+$94M
2
EHC icon
Encompass Health
EHC
+$35.7M
3
IRTC icon
iRhythm Holdings
IRTC
+$22M
4
XENT
Intersect ENT, Inc
XENT
+$15.4M
5
RIGL icon
Rigel Pharmaceuticals
RIGL
+$14.7M

Sector Composition

Rank Sector Weight
1 Healthcare 96.57%
2 Consumer Staples 0.96%
3 Industrials 0.47%
4 Financials 0.27%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HUM icon
1
Humana
HUM
$43.9B
$200M 5.81%
426,358
+57,758
+16% +$25.7M
AGL icon
2
Agilon Health
AGL
$1.55B
$168M 4.88%
307,240
+1,640
+0.5% +$829K
UNH icon
3
UnitedHealth
UNH
$382B
$138M 4.01%
268,500
+28,500
+12% +$14.3M
ARGX icon
4
argenx
ARGX
$55.2B
$133M 3.86%
350,000
– –
NBIX icon
5
Neurocrine Biosciences
NBIX
$18.2B
$109M 3.18%
1,122,500
+17,500
+2% +$1.62M
PODD icon
6
Insulet
PODD
$11.8B
$109M 3.18%
502,000
+20,300
+4% +$4.61M
IMCR icon
7
Immunocore
IMCR
$1.7B
$99.7M 2.9%
2,671,652
+119,618
+5% +$3.89M
EVH icon
8
Evolent Health
EVH
$371M
$84.1M 2.45%
2,738,000
+358,000
+15% +$10.4M
ALGN icon
9
Align Technology
ALGN
$12.9B
$83.9M 2.44%
354,500
+138,000
+64% +$42.4M
IDXX icon
10
Idexx Laboratories
IDXX
$44.9B
$78.5M 2.28%
223,750
+5,000
+2% +$2.04M
RARE icon
11
Ultragenyx Pharmaceutical
RARE
$2.46B
$65.2M 1.9%
1,093,030
+64,921
+6% +$3.99M
AGIO icon
12
Agios Pharmaceuticals
AGIO
$2.08B
$64.9M 1.89%
2,928,458
+263,183
+10% +$5.94M
SRRA
13
DELISTED
Sierra Oncology, Inc. Common Stock
SRRA
$64.6M 1.88%
1,174,786
– –
ISRG icon
14
Intuitive Surgical
ISRG
$127B
$59.9M 1.74%
298,500
– –
HZNP
15
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$59.5M 1.73%
746,000
– –
PCRX icon
16
Pacira BioSciences
PCRX
$1.04B
$59.3M 1.73%
1,017,500
+17,500
+2% +$1.15M
EW icon
17
Edwards Lifesciences
EW
$49.4B
$57.2M 1.67%
602,000
+5,500
+0.9% +$569K
MRTX
18
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
$56.7M 1.65%
844,977
+285,243
+51% +$18.1M
KRTX
19
DELISTED
Karuna Therapeutics, Inc. Common Stock
KRTX
$55.9M 1.63%
441,893
+9,350
+2% +$1.07M
ACRS icon
20
Aclaris Therapeutics
ACRS
$715M
$54.8M 1.6%
3,927,149
+62,115
+2% +$870K
ACHC icon
21
Acadia Healthcare
ACHC
$2.55B
$51M 1.48%
753,500
– –
PEN icon
22
Penumbra
PEN
$12.6B
$50M 1.46%
401,500
+197,000
+96% +$31.3M
BPMC
23
DELISTED
Blueprint Medicines
BPMC
$49.5M 1.44%
979,174
+31,459
+3% +$1.84M
ALNY icon
24
Alnylam Pharmaceuticals
ALNY
$38.3B
$48.5M 1.41%
332,500
– –
SGEN
25
DELISTED
Seagen Inc. Common Stock
SGEN
$48.1M 1.4%
272,000
+1,500
+0.6% +$216K
1
2 3 4 5

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Rock Springs Capital Management's Q2 2022 Portfolio in Review

As of Q2 2022, Rock Springs Capital Management held 141 positions worth $3.44B, down 14% from $3.97B the previous quarter. Its ten largest holdings account for 35% of the portfolio.

Rock Springs Capital Management's Q2 2022 filing shows 7 new, 68 increased, 12 reduced and 10 closed positions. Its largest new stake was State Street Health Care Select Sector SPDR ETF: 200,000 shares worth $25.6M. The largest sale was HCA Healthcare, an estimated $94M.

By sector, the portfolio is most concentrated in Healthcare at 97% of assets, up from 95% a quarter earlier, followed by Consumer Staples and Industrials.

  • Rock Springs Capital Management's largest Q2 2022 buy was State Street Health Care Select Sector SPDR ETF: 200,000 shares worth $25.6M.
  • Rock Springs Capital Management added most to Align Technology in Q2 2022, an estimated $42.4M increase.
  • Rock Springs Capital Management's biggest Q2 2022 reduction was iRhythm Holdings, cutting an estimated $22M.
  • Rock Springs Capital Management fully exited HCA Healthcare in Q2 2022, selling an estimated $94M.
  • Rock Springs Capital Management's ten largest holdings make up 35% of its $3.44B portfolio in Q2 2022.
  • Rock Springs Capital Management opened 7 new positions and closed 10 in Q2 2022.
  • Rock Springs Capital Management's portfolio value fell 14% quarter-over-quarter to $3.44B.

Based on Rock Springs Capital Management's 13F filing for Q2 2022, filed 15 Aug 2022.