0001172661-18-001583.txt : 20180814
0001172661-18-001583.hdr.sgml : 20180814
20180814094712
ACCESSION NUMBER: 0001172661-18-001583
CONFORMED SUBMISSION TYPE: 13F-HR
PUBLIC DOCUMENT COUNT: 2
CONFORMED PERIOD OF REPORT: 20180630
FILED AS OF DATE: 20180814
DATE AS OF CHANGE: 20180814
EFFECTIVENESS DATE: 20180814
FILER:
COMPANY DATA:
COMPANY CONFORMED NAME: Rock Springs Capital Management LP
CENTRAL INDEX KEY: 0001595725
IRS NUMBER: 800944416
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 13F-HR
SEC ACT: 1934 Act
SEC FILE NUMBER: 028-16048
FILM NUMBER: 181014792
BUSINESS ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
BUSINESS PHONE: 4102200129
MAIL ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
13F-HR
1
primary_doc.xml
13F-HR
LIVE
false
true
false
0001595725
XXXXXXXX
06-30-2018
06-30-2018
false
Rock Springs Capital Management LP
650 South Exeter Street
Suite 1070
Baltimore
MD
21202
13F HOLDINGS REPORT
028-16048
N
Eric Brody
Vice President of Operations and Finance
410-220-0541
/s/ Eric Brody
Baltimore
MD
08-14-2018
0
147
2598744
INFORMATION TABLE
2
infotable.xml
ABBVIE INC
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ACADIA HEALTHCARE COMPANY IN
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1253500
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1253500
0
0
ACHILLION PHARMACEUTICALS IN
COM
00448Q201
6651
2350000
SH
SOLE
2350000
0
0
ACLARIS THERAPEUTICS INC
COM
00461U105
17094
856000
SH
SOLE
856000
0
0
ADAPTIMMUNE THERAPEUTICS PLC
SPONDS ADR
00653A107
8903
750000
SH
SOLE
750000
0
0
ADVERUM BIOTECHNOLOGIES INC
COM
00773U108
4770
900000
SH
SOLE
900000
0
0
AEGLEA BIOTHERAPEUTICS INC
COM
00773J103
6877
650000
SH
SOLE
650000
0
0
AGILENT TECHNOLOGIES INC
COM
00846U101
10123
163700
SH
SOLE
163700
0
0
ALDER BIOPHARMACEUTICALS INC
COM
014339105
24727
1565000
SH
SOLE
1565000
0
0
ALDER BIOPHARMACEUTICALS INC
NOTE 2.500% 2/0
014339AA3
5207
5000000
PRN
SOLE
5000000
0
0
ALEXION PHARMACEUTICALS INC
COM
015351109
61144
492500
SH
SOLE
492500
0
0
ALIGN TECHNOLOGY INC
COM
016255101
22581
66000
SH
SOLE
66000
0
0
ALLERGAN PLC
SHS
G0177J108
2945
17665
SH
SOLE
17665
0
0
ALNYLAM PHARMACEUTICALS INC
COM
02043Q107
17088
173500
SH
SOLE
173500
0
0
AMARIN CORP PLC
SPONS ADR NEW
023111206
12360
4000000
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0
0
AMERISOURCEBERGEN CORP
COM
03073E105
18759
220000
SH
SOLE
220000
0
0
AMICUS THERAPEUTICS INC
COM
03152W109
15620
1000000
SH
SOLE
1000000
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ANAPTYSBIO INC
COM
032724106
10656
150000
SH
SOLE
150000
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APTINYX INC
COM
03836N103
8218
340000
SH
SOLE
340000
0
0
ARDELYX INC
COM
039697107
9345
2525557
SH
SOLE
2525557
0
0
ARENA PHARMACEUTICALS INC
COM NEW
040047607
16350
375000
SH
SOLE
375000
0
0
ARGENX SE
SPONSORED ADR
04016X101
10668
128750
SH
SOLE
128750
0
0
ASCENDIS PHARMA A S
SPONSORED ADR
04351P101
16198
243500
SH
SOLE
243500
0
0
ASSEMBLY BIOSCIENCES INC
COM
045396108
17645
450000
SH
SOLE
450000
0
0
AUDENTES THERAPEUTICS INC
COM
05070R104
16812
440000
SH
SOLE
440000
0
0
AXOGEN INC
COM
05463X106
27386
545000
SH
SOLE
545000
0
0
BAXTER INTL INC
COM
071813109
21930
297000
SH
SOLE
297000
0
0
BEIGENE LTD
SPONSORED ADR
07725L102
33052
215000
SH
SOLE
215000
0
0
BIOCRYST PHARMACEUTICALS
COM
09058V103
1433
250000
SH
SOLE
250000
0
0
BIOGEN INC
COM
09062X103
15383
53000
SH
SOLE
53000
0
0
BIOHAVEN PHARMACTL HLDG CO L
COM
G11196105
15709
397500
SH
SOLE
397500
0
0
BIOMARIN PHARMACEUTICAL INC
COM
09061G101
11775
125000
SH
SOLE
125000
0
0
BLUEBIRD BIO INC
COM
09609G100
7063
45000
SH
SOLE
45000
0
0
BLUEPRINT MEDICINES CORP
COM
09627Y109
12633
199000
SH
SOLE
199000
0
0
BOSTON SCIENTIFIC CORP
COM
101137107
5641
172500
SH
SOLE
172500
0
0
CELGENE CORP
COM
151020104
28623
360400
SH
SOLE
360400
0
0
CHIASMA INC
COM
16706W102
788
525000
SH
SOLE
525000
0
0
CIDARA THERAPEUTICS INC
COM
171757107
1560
300000
SH
SOLE
300000
0
0
CLEARSIDE BIOMEDICAL INC
COM
185063104
10423
975000
SH
SOLE
975000
0
0
CLEMENTIA PHARMACEUTICALS IN
COM
185575107
4540
345000
SH
SOLE
345000
0
0
CLOVIS ONCOLOGY INC
COM
189464100
11595
255000
SH
SOLE
255000
0
0
COHERUS BIOSCIENCES INC
COM
19249H103
9660
690000
SH
SOLE
690000
0
0
COLLEGIUM PHARMACEUTICAL INC
COM
19459J104
39353
1650000
SH
SOLE
1650000
0
0
COMPUGEN LTD
ORD
M25722105
3558
1078165
SH
SOLE
1078165
0
0
CORREVIO PHARMA CORP
COM
22026V105
4536
1200000
SH
SOLE
1200000
0
0
CORVUS PHARMACEUTICALS INC
COM
221015100
6314
575000
SH
SOLE
575000
0
0
CYMABAY THERAPEUTICS INC
COM
23257D103
7784
580000
SH
SOLE
580000
0
0
DAVITA INC
COM
23918K108
28366
408500
SH
SOLE
408500
0
0
DERMIRA INC
COM
24983L104
5520
600000
SH
SOLE
600000
0
0
DERMIRA INC
NOTE 3.000% 5/1
24983LAB0
827
1000000
PRN
SOLE
1000000
0
0
DYNAVAX TECHNOLOGIES CORP
COM NEW
268158201
4087
268000
SH
SOLE
268000
0
0
EDWARDS LIFESCIENCES CORP
COM
28176E108
24019
165000
SH
SOLE
165000
0
0
EGALET CORP
NOTE 5.500% 4/0
28226BAB0
2841
7800000
PRN
SOLE
7800000
0
0
ENCOMPASS HEALTH CORP
COM
29261A100
30474
450000
SH
SOLE
450000
0
0
ENDOCYTE INC
COM
29269A102
9315
675000
SH
SOLE
675000
0
0
ENVISION HEALTHCARE CORP
COM
29414D100
4854
110300
SH
SOLE
110300
0
0
EPIZYME INC
COM
29428V104
16819
1241253
SH
SOLE
1241253
0
0
EXACT SCIENCES CORP
COM
30063P105
22720
380000
SH
SOLE
380000
0
0
EXELIXIS INC
COM
30161Q104
12804
595000
SH
SOLE
595000
0
0
FIBROGEN INC
COM
31572Q808
19218
307000
SH
SOLE
307000
0
0
FIVE PRIME THERAPEUTICS INC
COM
33830X104
9375
593000
SH
SOLE
593000
0
0
G1 THERAPEUTICS INC
COM
3621LQ109
13038
300000
SH
SOLE
300000
0
0
GALAPAGOS NV
SPON ADR
36315X101
17053
185000
SH
SOLE
185000
0
0
GILEAD SCIENCES INC
COM
375558103
25857
365000
SH
SOLE
365000
0
0
GLOBAL BLOOD THERAPEUTICS IN
COM
37890U108
6780
150000
SH
SOLE
150000
0
0
GLOBAL CORD BLOOD CORPORATIO
SHS
G39342103
8351
880000
SH
SOLE
880000
0
0
GTX INC DEL
COM NEW
40052B207
5420
354000
SH
SOLE
354000
0
0
GW PHARMACEUTICALS PLC
ADS
36197T103
61398
440000
SH
SOLE
440000
0
0
HCA HEALTHCARE INC
COM
40412C101
44118
430000
SH
SOLE
430000
0
0
HERON THERAPEUTICS INC
COM
427746102
20396
525000
SH
SOLE
525000
0
0
HOLOGIC INC
COM
436440101
15900
400000
SH
SOLE
400000
0
0
HOMOLOGY MEDICINES INC
COM
438083107
9588
470000
SH
SOLE
470000
0
0
IDEXX LABS INC
COM
45168D104
15692
72000
SH
SOLE
72000
0
0
IMMUNOMEDICS INC
COM
452907108
11835
500000
SH
SOLE
500000
0
0
INCYTE CORP
COM
45337C102
19832
296000
SH
SOLE
296000
0
0
INOGEN INC
COM
45780L104
22173
119000
SH
SOLE
119000
0
0
INSMED INC
COM PAR $.01
457669307
19511
825000
SH
SOLE
825000
0
0
INSMED INC
NOTE 1.750% 1/1
457669AA7
5531
6000000
PRN
SOLE
6000000
0
0
INTERSECT ENT INC
COM
46071F103
15355
410000
SH
SOLE
410000
0
0
INTRA CELLULAR THERAPIES INC
COM
46116X101
3313
187500
SH
SOLE
187500
0
0
INTUITIVE SURGICAL INC
COM NEW
46120E602
67896
141900
SH
SOLE
141900
0
0
INVITAE CORP
COM
46185L103
10290
1400000
SH
SOLE
1400000
0
0
IRHYTHM TECHNOLOGIES INC
COM
450056106
38942
480000
SH
SOLE
480000
0
0
JAZZ PHARMACEUTICALS PLC
SHS USD
G50871105
16885
98000
SH
SOLE
98000
0
0
KINIKSA PHARMACEUTICALS LTD
COM CL A
G5269C101
1562
90000
SH
SOLE
90000
0
0
KURA ONCOLOGY INC
COM
50127T109
7280
400000
SH
SOLE
400000
0
0
LA JOLLA PHARMACEUTICAL CO
COM PAR $.0001 2
503459604
6484
222300
SH
SOLE
222300
0
0
LOXO ONCOLOGY INC
COM
548862101
50292
289900
SH
SOLE
289900
0
0
MACROGENICS INC
COM
556099109
5679
275000
SH
SOLE
275000
0
0
MADRIGAL PHARMACEUTICALS INC
COM
558868105
95738
342300
SH
SOLE
342300
0
0
MCKESSON CORP
COM
58155Q103
667
5000
SH
SOLE
5000
0
0
MEDICINES CO
COM
584688105
25323
690000
SH
SOLE
690000
0
0
MEDICINES CO
NOTE 2.500% 1/1
584688AE5
3660
3000000
PRN
SOLE
3000000
0
0
MEDICINES CO
NOTE 2.750% 7/1
584688AG0
5052
5000000
PRN
SOLE
5000000
0
0
MENLO THERAPEUTICS INC
COM
586858102
2680
330000
SH
SOLE
330000
0
0
MERSANA THERAPEUTICS INC
COM
59045L106
17860
1000000
SH
SOLE
1000000
0
0
MIRATI THERAPEUTICS INC
COM
60468T105
11832
240000
SH
SOLE
240000
0
0
MOLINA HEALTHCARE INC
COM
60855R100
53377
545000
SH
SOLE
545000
0
0
MOMENTA PHARMACEUTICALS INC
COM
60877T100
9254
452500
SH
SOLE
452500
0
0
MYOVANT SCIENCES LTD
COM
G637AM102
6749
295100
SH
SOLE
295100
0
0
NABRIVA THERAPEUTICS PLC
SHS
G63637105
2227
640000
SH
SOLE
640000
0
0
NEUROCRINE BIOSCIENCES INC
COM
64125C109
61930
630400
SH
SOLE
630400
0
0
NEUROCRINE BIOSCIENCES INC
NOTE 2.250% 5/1
64125CAD1
1446
1000000
PRN
SOLE
1000000
0
0
NOVAVAX INC
COM
670002104
4355
3250000
SH
SOLE
3250000
0
0
NUVASIVE INC
COM
670704105
19415
372500
SH
SOLE
372500
0
0
OBSEVA SA
COM
H5861P103
16957
1120000
SH
SOLE
1120000
0
0
ODONATE THERAPEUTICS INC
COM
676079106
8782
397750
SH
SOLE
397750
0
0
PACIRA PHARMACEUTICALS INC
COM
695127100
38396
1198000
SH
SOLE
1198000
0
0
PACIRA PHARMACEUTICALS INC
NOTE 2.375% 4/0
695127AD2
932
1000000
PRN
SOLE
1000000
0
0
PARATEK PHARMACEUTICALS INC
COM
699374302
4590
450000
SH
SOLE
450000
0
0
PENUMBRA INC
COM
70975L107
32707
236750
SH
SOLE
236750
0
0
PORTOLA PHARMACEUTICALS INC
COM
737010108
12230
323800
SH
SOLE
323800
0
0
PRA HEALTH SCIENCES INC
COM
69354M108
26911
288247
SH
SOLE
288247
0
0
PROTEOSTASIS THERAPEUTICS IN
COM
74373B109
1315
471321
SH
SOLE
471321
0
0
PROTHENA CORP PLC
SHS
G72800108
1239
85000
SH
Call
SOLE
85000
0
0
PUMA BIOTECHNOLOGY INC
COM
74587V107
28144
475800
SH
SOLE
475800
0
0
RA PHARMACEUTICALS INC
COM
74933V108
7463
750000
SH
SOLE
750000
0
0
RADIUS HEALTH INC
COM NEW
750469207
33154
1125000
SH
SOLE
1125000
0
0
RADIUS HEALTH INC
NOTE 3.000% 9/0
750469AA6
1399
1500000
PRN
SOLE
1500000
0
0
RESTORBIO INC
COM
76133L103
2516
275000
SH
SOLE
275000
0
0
RETROPHIN INC
COM
761299106
10904
400000
SH
SOLE
400000
0
0
RHYTHM PHARMACEUTICALS INC
COM
76243J105
6721
215000
SH
SOLE
215000
0
0
RIGEL PHARMACEUTICALS INC
COM NEW
766559603
11179
3950000
SH
SOLE
3950000
0
0
RTI SURGICAL INC
COM
74975N105
8970
1950000
SH
SOLE
1950000
0
0
SAGE THERAPEUTICS INC
COM
78667J108
7670
49000
SH
SOLE
49000
0
0
SAREPTA THERAPEUTICS INC
COM
803607100
39324
297500
SH
SOLE
297500
0
0
SCYNEXIS INC
COM
811292101
1345
820000
SH
SOLE
820000
0
0
SERES THERAPEUTICS INC
COM
81750R102
1892
220000
SH
SOLE
220000
0
0
SOLID BIOSCIENCES INC
COM
83422E105
3385
95000
SH
SOLE
95000
0
0
SPARK THERAPEUTICS INC
COM
84652J103
45021
544000
SH
SOLE
544000
0
0
SPERO THERAPEUTICS INC
COM
84833T103
7702
525000
SH
SOLE
525000
0
0
STRYKER CORP
COM
863667101
30057
178000
SH
SOLE
178000
0
0
TELEFLEX INC
COM
879369106
24809
92500
SH
SOLE
92500
0
0
TESARO INC
COM
881569107
27812
625400
SH
SOLE
625400
0
0
THERAVANCE BIOPHARMA INC
NOTE 3.250%11/0
88339KAA0
1491
1500000
PRN
SOLE
1500000
0
0
THERAVANCE BIOPHARMA INC
COM
G8807B106
14801
652600
SH
SOLE
652600
0
0
THERMO FISHER SCIENTIFIC INC
COM
883556102
19885
96000
SH
SOLE
96000
0
0
TRANSLATE BIO INC
COM
89374L104
12790
1011079
SH
SOLE
1011079
0
0
ULTRAGENYX PHARMACEUTICAL IN
COM
90400D108
15374
200000
SH
SOLE
200000
0
0
UNITEDHEALTH GROUP INC
COM
91324P102
139230
567500
SH
SOLE
567500
0
0
VERTEX PHARMACEUTICALS INC
COM
92532F100
32377
190500
SH
SOLE
190500
0
0
WELLCARE HEALTH PLANS INC
COM
94946T106
54912
223000
SH
SOLE
223000
0
0
WEST PHARMACEUTICAL SVSC INC
COM
955306105
15886
160000
SH
SOLE
160000
0
0
WRIGHT MED GROUP N V
ORD SHS 0.03 PAR
N96617118
25960
1000000
SH
SOLE
1000000
0
0
ZAI LAB LTD
ADR
98887Q104
6975
300000
SH
SOLE
300000
0
0
ZIMMER BIOMET HLDGS INC
COM
98956P102
17942
161000
SH
SOLE
161000
0
0
ZOGENIX INC
COM NEW
98978L204
9989
226000
SH
SOLE
226000
0
0