0001172661-14-001101.txt : 20140515 0001172661-14-001101.hdr.sgml : 20140515 20140515150538 ACCESSION NUMBER: 0001172661-14-001101 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20140331 FILED AS OF DATE: 20140515 DATE AS OF CHANGE: 20140515 EFFECTIVENESS DATE: 20140515 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: 14846492 BUSINESS ADDRESS: STREET 1: 650 SOUTH EXETER STREET CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 4102200129 MAIL ADDRESS: STREET 1: 650 SOUTH EXETER STREET CITY: BALTIMORE STATE: MD ZIP: 21202 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001595725 XXXXXXXX 03-31-2014 03-31-2014 false Rock Springs Capital Management LP

650 South Exeter Street Baltimore MD 21202

13F HOLDINGS REPORT 028-16048 N Jeffrey Annecchino 410-220-0129 /s/ Jeffrey Annecchino Baltimore MD 05-15-2014 0 75 433561 INFORMATION TABLE 2 infotable.xml ABBVIE INC COM 00287Y109 18504 360000 SH SOLE 360000 0 0 ACTAVIS PLC SHS G0083B108 11579 56250 SH SOLE 56250 0 0 ADVISORY BRD CO COM 00762W107 1997 31075 SH SOLE 31075 0 0 AGILENT TECHNOLOGIES INC COM 00846U101 8668 155000 SH SOLE 155000 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 7378 48500 SH SOLE 48500 0 0 ALKERMES PLC SHS G01767105 1565 35500 SH SOLE 35500 0 0 AMGEN INC COM 031162100 14184 115000 SH SOLE 115000 0 0 ARROWHEAD RESH CORP COM NEW 042797209 1232 75000 SH SOLE 75000 0 0 ATHENAHEALTH INC COM 04685W103 3125 19500 SH SOLE 19500 0 0 AVANIR PHARMACEUTICALS INC CL A NEW 05348P401 1101 300000 SH SOLE 300000 0 0 BIOGEN IDEC INC COM 09062X103 16899 55250 SH SOLE 55250 0 0 BRISTOL MYERS SQUIBB CO COM 110122108 9637 185500 SH SOLE 185500 0 0 CARDINAL HEALTH INC COM 14149Y108 5318 76000 SH SOLE 76000 0 0 CASTLIGHT HEALTH INC CL B 14862Q100 2122 100000 SH SOLE 100000 0 0 CELGENE CORP COM 151020104 10749 77000 SH SOLE 77000 0 0 CERNER CORP COM 156782104 2363 42000 SH SOLE 42000 0 0 CHARLES RIV LABS INTL INC COM 159864107 2987 49500 SH SOLE 49500 0 0 CHINA CORD BLOOD CORP SHS G21107100 2870 717500 SH SOLE 717500 0 0 CONCERT PHARMACEUTICALS INC COM 206022105 801 59553 SH SOLE 59553 0 0 COOPER COS INC COM NEW 216648402 8310 60500 SH SOLE 60500 0 0 COVANCE INC COM 222816100 3377 32500 SH SOLE 32500 0 0 CUBIST PHARMACEUTICALS INC COM 229678107 2195 30000 SH SOLE 30000 0 0 CVS CAREMARK CORPORATION COM 126650100 8459 113000 SH SOLE 113000 0 0 DICERNA PHARMACEUTICALS INC COM 253031108 2966 105000 SH SOLE 105000 0 0 ENTEROMEDICS INC COM NEW 29365M208 1183 650000 SH SOLE 650000 0 0 ENVISION HEALTHCARE HLDGS IN COM 29413U103 4652 137500 SH SOLE 137500 0 0 EXELIXIS INC COM 30161Q104 881 249000 SH SOLE 249000 0 0 FEI CO COM 30241L109 2833 27500 SH SOLE 27500 0 0 FIVE PRIME THERAPEUTICS INC COM 33830X104 3441 175000 SH SOLE 175000 0 0 FLAMEL TECHNOLOGIES SA SPONSORED ADR 338488109 10050 750000 SH SOLE 750000 0 0 FOREST LABS INC COM 345838106 4983 54000 SH SOLE 54000 0 0 GILEAD SCIENCES INC COM 375558103 23455 331000 SH SOLE 331000 0 0 GW PHARMACEUTICALS PLC ADS 36197T103 1054 17750 SH SOLE 17750 0 0 HCA HOLDINGS INC COM 40412C101 3518 67000 SH SOLE 67000 0 0 HEARTWARE INTL INC COM 422368100 4689 50000 SH SOLE 50000 0 0 HUMANA INC COM 444859102 7383 65500 SH SOLE 65500 0 0 ILLUMINA INC COM 452327109 6318 42500 SH SOLE 42500 0 0 INCYTE CORP COM 45337C102 3399 63500 SH SOLE 63500 0 0 INFINITY PHARMACEUTICALS INC COM 45665G303 1159 97500 SH SOLE 97500 0 0 INTERCEPT PHARMACEUTICALS IN COM 45845P108 4287 13000 SH SOLE 13000 0 0 INTERMUNE INC COM 45884X103 13723 410000 SH SOLE 410000 0 0 INTUITIVE SURGICAL INC COM NEW 46120E602 8103 18500 SH SOLE 18500 0 0 JAZZ PHARMACEUTICALS PLC SHS USD G50871105 2739 19750 SH SOLE 19750 0 0 JOHNSON & JOHNSON COM 478160104 24558 250000 SH SOLE 250000 0 0 KINDRED BIOSCIENCES INC COM 494577109 1714 92500 SH SOLE 92500 0 0 MCKESSON CORP COM 58155Q103 16156 91500 SH SOLE 91500 0 0 MEDICINES CO COM 584688105 3410 120000 SH SOLE 120000 0 0 MEDNAX INC COM 58502B106 2014 32500 SH SOLE 32500 0 0 MYLAN INC COM 628530107 2588 53000 SH SOLE 53000 0 0 NEUROCRINE BIOSCIENCES INC COM 64125C109 4830 300000 SH SOLE 300000 0 0 NOVAVAX INC COM 670002104 1472 325000 SH SOLE 325000 0 0 OREXIGEN THERAPEUTICS INC COM 686164104 5395 830000 SH SOLE 830000 0 0 PACIRA PHARMACEUTICALS INC COM 695127100 4269 61000 SH SOLE 61000 0 0 PERRIGO CO PLC SHS G97822103 4408 28500 SH SOLE 28500 0 0 PHARMACYCLICS INC COM 716933106 3157 31500 SH SOLE 31500 0 0 PROTHENA CORP PLC SHS G72800108 2490 65000 SH SOLE 65000 0 0 PUMA BIOTECHNOLOGY INC COM 74587V107 388 3728 SH SOLE 3728 0 0 RECEPTOS INC COM 756207106 2097 50000 SH SOLE 50000 0 0 REGENERON PHARMACEUTICALS COM 75886F107 2252 7500 SH SOLE 7500 0 0 RTI SURGICAL INC COM 74975N105 2800 686382 SH SOLE 686382 0 0 SELECT SECTOR SPDR TR SBI HEALTHCARE 81369Y209 11698 200000 SH SOLE 200000 0 0 STERICYCLE INC COM 858912108 3522 31000 SH SOLE 31000 0 0 TEAM HEALTH HOLDINGS INC COM 87817A107 5426 121250 SH SOLE 121250 0 0 TESARO INC COM 881569107 3818 129500 SH SOLE 129500 0 0 THERAVANCE INC COM 88338T104 2576 83250 SH SOLE 83250 0 0 THERMO FISHER SCIENTIFIC INC COM 883556102 12896 107250 SH SOLE 107250 0 0 THORATEC CORP COM NEW 885175307 14360 401000 SH SOLE 401000 0 0 ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 2518 51500 SH SOLE 51500 0 0 UNITEDHEALTH GROUP INC COM 91324P102 14840 181000 SH SOLE 181000 0 0 UNIVERSAL HLTH SVCS INC CL B 913903100 3693 45000 SH SOLE 45000 0 0 VALEANT PHARMACEUTICALS INTL COM 91911K102 6987 53000 SH SOLE 53000 0 0 VERTEX PHARMACEUTICALS INC COM 92532F100 1132 16000 SH SOLE 16000 0 0 WALGREEN CO COM 931422109 4655 70500 SH SOLE 70500 0 0 WELLCARE HEALTH PLANS INC COM 94946T106 3271 51500 SH SOLE 51500 0 0 WUXI PHARMATECH CAYMAN INC SPONS ADR SHS 929352102 1935 52500 SH SOLE 52500 0 0