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RA Capital Management 13F holdings, Q1 2012

Holdings as of March 31, 2012 · filings on SEC EDGAR · latest filing →

RA Capital Management disclosed 23 US equity positions worth $184.6m in its Q1 2012 13F filing. The largest position was SEQUENOM INC at 12.2% of the reported book, followed by ARTHROCARE CORP and POZEN INC. Against the Q4 2011 filing, it opened 12 new positions, added to 4 and reduced 5 among the top 23 holdings.

← Q4 2011 · Q2 2012 →

What did RA Capital Management own in Q1 2012? Top 23 positions

#StockSectorWeightValueSharesΔ sharesvs Q4 2011
1 SEQUENOM INC 12.2%$22.6m5,547,283 -9% reduced
2 ARTHROCARE CORP 9.9%$18.3m683,146 60% added
3 POZEN INC 9.6%$17.7m2,946,944 21% added
4 XOMA CORP DEL 8.1%$15.0m5,426,009 new
5 BCRX BIOCRYST PHARMACEUTICALS Healthcare 8.0%$14.7m3,045,146 new
6 VNDA VANDA PHARMACEUTICALS INC Healthcare 6.7%$12.3m2,573,570 6% added
7 DYAX CORP 6.5%$12.1m7,736,875 25% added
8 ACAD ACADIA PHARMACEUTICALS INC Healthcare 6.1%$11.3m5,269,999 0% held
9 DERMA SCIENCES INC 5.4%$10.0m1,043,419 0% held
10 NBIX NEUROCRINE BIOSCIENCES INC Healthcare 3.7%$6.8m850,000 new
11 VIVUS INC 3.6%$6.7m300,000 new
12 VSTM VERASTEM INC Healthcare 3.6%$6.6m605,600 new
13 VENTRUS BIOSCIENCES INC 2.9%$5.3m534,916 -39% reduced
14 ANACOR PHARMACEUTICALS INC 2.6%$4.7m800,530 new
15 YM BIOSCIENCES INC 2.3%$4.3m2,288,000 new
16 SGMOQ SANGAMO BIOSCIENCES INC Healthcare 1.9%$3.5m705,679 -19% reduced
17 ARDEA BIOSCIENCES INC 1.8%$3.3m150,010 new
18 REPROS THERAPEUTICS INC 1.5%$2.8m666,666 new
19 ALNY ALNYLAM PHARMACEUTICALS INC Healthcare 1.5%$2.8m250,000 new
20 NEWLINK GENETICS CORP 1.4%$2.6m288,456 -42% reduced
21 PAIN THERAPEUTICS INC 0.2%$424.0k117,084 new
22 NVAX NOVAVAX INC Healthcare 0.2%$378.0k300,000 -69% reduced
23 CORONADO BIOSCIENCES INC 0.2%$353.0k41,700 new

Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.