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RTW Investments, LP

Q4 2015 Holdings

Filed 2016-02-16 | 41 holdings | $75.4M | 13F-HR/A | View on SEC ↗ · Holdings Table ↗

Amended (2016-05-24) | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alnylam Pharmaceuticals Inc(ALNY)COM02043Q107$53.0M562,69770.2%
BioCryst Pharmaceuticals Inc(BCRX)COM09058V103$20.4M1,973,10827.0%
Anika Therapeutics Inc(ANIK)ACOM035255108$1.0M27,5001.4%
Allscripts Healthcare Solutions Inc(MDRX)ACOM01988P108$738.0K48,0001.0%
La Jolla Pharmaceutical Co(LJPC)ACOM PAR $.0001 2503459604$29.3K1,084,4169.7%
Omeros Corp(OMER)COM682143102$28.1K1,785,5020.0%
Kite Pharma IncCOM49803L109$25.3K411,1430.0%
Dicerna Pharmaceuticals Inc(DRNAUSD)COM253031108$23.4K1,975,2290.0%
Achillion Pharmaceuticals Inc(ACHNEUR)COM00448Q201$21.1K1,951,9220.0%
Mirati Therapeutics Inc(MRTXEUR)ACOM60468T105$12.2K385,4564.0%
Atara Biotherapeutics Inc.(ATRAGBX)COM046513107$11.2K425,8520.0%
Five Prime Therapeutics Inc(FPRX)COM33830X104$10.5K252,4520.0%
Celldex Therapeutics IncANEW COM15117B103$10.0K637,2383.3%
Agenus Inc(AGENEUR)COM NEW00847G705$9.9K2,173,2670.0%
Symmetry Surgical IncCOM87159G100$7.9K863,2640.0%
Bristol-Myers Squibb Co(BMY)ACOM110122108$7.5K109,7012.5%
Corium International IncCOM21887L107$5.9K730,0310.0%
Global Blood Therapeutics IncCOM37890U108$5.6K171,8980.0%
Dyax CorpACOM26746E103$4.4K115,7951.4%
Regenxbio Inc(RGNX)ACOM75901B107$3.7K221,3261.2%
Lipocine IncCOM53630X104$2.8K216,4140.0%
Accelerate Diagnostics IncACOM00430H102$2.3K107,4670.8%
Invuity IncCOM NEW46187J205$1.8K202,8080.6%
CytRx CorpACOM PAR $.001232828509$1.2K470,5760.4%
Masimo Corp(MASI)ACOM574795100$1.1K25,9000.0%
Biopharmx CorpCOM09072X101$563370,6360.2%
Genomic Health Inc(GHDX)ACOM37244C101$52815,0000.0%
Natera Inc(NTRA)ACOM632307104$34231,6930.0%
bluebird bio IncACOM09609G100$3405,3000.0%
Nivalis Therapeutics IncCOM65481J109$23230,0000.1%
T2 Biosystems Inc. CmnACOM89853L104$22920,9000.0%
Veracyte Inc(VCYT)ACOM92337F107$18025,0000.0%
Endologix IncACOM29266S106$14915,0000.0%
Vivo 01/15/2016 Call 20(MR4)CallCOM589584101$1101,2520.0%
Adaptimmune Therapeutics(ADAPY)ASPONDS ADR00653A107$857,0550.0%
Nvro 05/20/2016 PUT 50(NVROEUR)PutCOM64157F103$371420.0%
Berkshire Hathaway Inc(BRK/B)CL B NEW084670702$7500.0%
USO 01/15/2016 Call 25CallUnits91232N108$713,8500.0%