EcoR1 Capital, LLC Quant / Systematic

CIK: 0001587114 · Show all filings

Period: Q3 2015 (← Previous) (Next →)

Filing Date: Nov 16, 2015

Total Value ($000): $219,698 (89.9% shares, 10.1% debt)

Holdings (25)

— FIBROGEN INC 12.3%

Value ($000) $26,970 Shares 1,230,391 Est. Cost $24.72 Unrealized —

— ATARA BIOTHERAPEUTICS INC 11.5%

Value ($000) $25,261 Shares 803,458 Est. Cost $36.04 Unrealized —

— ARRAY BIOPHARMA INC 10.1%

Value ($000) $22,210 Shares 22,534,000 Est. Cost $0.96 Unrealized —

— RETROPHIN INC 9.3%

Value ($000) $20,415 Shares 1,007,660 Est. Cost $21.51 Unrealized —

— EPIZYME INC 8.7%

Value ($000) $19,196 Shares 1,492,700 Est. Cost $19.11 Unrealized —

— ASSEMBLY BIOSCIENCES INC 8.2%

Value ($000) $18,040 Shares 1,887,069 Est. Cost $9.75 Unrealized —

— KITE PHARMA INC 7.1%

Value ($000) $15,668 Shares 281,400 Est. Cost $57.67 Unrealized —

— FLEX PHARMA INC 5.1%

Value ($000) $11,214 Shares 933,691 Est. Cost $19.13 Unrealized —

COLL COLLEGIUM PHARMACEUTICAL INC 4.7%

Value ($000) $10,284 Shares 465,118 Est. Cost $17.29 Unrealized +4.1%

— ATYR PHARMA INC 3.9%

Value ($000) $8,623 Shares 840,462 Est. Cost $18.52 Unrealized —

— NABRIVA THERAPEUTICS AG 3.6%

Value ($000) $7,938 Shares 835,530 Est. Cost $9.50 Unrealized —

— KINDRED BIOSCIENCES INC 3.1%

Value ($000) $6,882 Shares 1,323,431 Est. Cost $7.40 Unrealized —

— GENVEC INC 2.1%

Value ($000) $4,589 Shares 1,986,413 Est. Cost $2.08 Unrealized —

— CELLADON CORP 1.4%

Value ($000) $2,985 Shares 2,843,170 Est. Cost $1.26 Unrealized —

— ONCOTHYREON INC 1.2%

Value ($000) $2,585 Shares 943,500 Est. Cost $2.74 Unrealized —

— AKARI THERAPEUTICS PLC 1.1%

Value ($000) $2,417 Shares 100,709 Est. Cost $24.00 Unrealized —

— FORWARD PHARMA A/S 1.1%

Value ($000) $2,403 Shares 101,995 Est. Cost $23.61 Unrealized —

— FIVE PRIME THERAPEUTICS INC 1.0%

Value ($000) $2,293 Shares 149,000 Est. Cost $15.39 Unrealized —

— CALITHERA BIOSCIENCES INC 1.0%

Value ($000) $2,256 Shares 415,480 Est. Cost $15.57 Unrealized —

— GILEAD SCIENCES INC 1.0%

Value ($000) $2,148 Shares 3,255 Est. Cost — Unrealized —

— OREXIGEN THERAPEUTICS INC 0.9%

Value ($000) $1,979 Shares 937,958 Est. Cost $2.11 Unrealized —

— QLT INC 0.8%

Value ($000) $1,699 Shares 638,900 Est. Cost $3.58 Unrealized —

— VALEANT PHARMACEUTICALS INTL 0.6%

Value ($000) $1,347 Shares 1,265 Est. Cost — Unrealized —

— CATALYST BIOSCIENCES INC 0.1%

Value ($000) $261 Shares 56,000 Est. Cost $4.66 Unrealized —

— REGULUS THERAPEUTICS INC 0.0%

Value ($000) $35 Shares 1,280 Est. Cost — Unrealized —

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
—	FIBROGEN INC	1,230,391	$26,970	12.3%	$24.72	—	COM	31572Q808
—	ATARA BIOTHERAPEUTICS INC	803,458	$25,261	11.5%	$36.04	—	COM	046513107
—	ARRAY BIOPHARMA INC	22,534,000	$22,210	10.1%	$0.96	—	NOTE	04269XAA3
—	RETROPHIN INC	1,007,660	$20,415	9.3%	$21.51	—	COM	761299106
—	EPIZYME INC	1,492,700	$19,196	8.7%	$19.11	—	COM	29428V104
—	ASSEMBLY BIOSCIENCES INC	1,887,069	$18,040	8.2%	$9.75	—	COM	045396108
—	KITE PHARMA INC	281,400	$15,668	7.1%	$57.67	—	COM	49803L109
—	FLEX PHARMA INC	933,691	$11,214	5.1%	$19.13	—	COM	33938A105
COLL	COLLEGIUM PHARMACEUTICAL INC	465,118	$10,284	4.7%	$17.29	+4.1%	COM	19459J104
—	ATYR PHARMA INC	840,462	$8,623	3.9%	$18.52	—	COM	002120103
—	NABRIVA THERAPEUTICS AG	835,530	$7,938	3.6%	$9.50	—	SPONSORED ADR	62957M104
—	KINDRED BIOSCIENCES INC	1,323,431	$6,882	3.1%	$7.40	—	COM	494577109
—	GENVEC INC	1,986,413	$4,589	2.1%	$2.08	—	COM	37246C307
—	CELLADON CORP	2,843,170	$2,985	1.4%	$1.26	—	COM	15117E107
—	ONCOTHYREON INC	943,500	$2,585	1.2%	$2.74	—	COM	682324108
—	AKARI THERAPEUTICS PLC	100,709	$2,417	1.1%	$24.00	—	SPONSORED ADR	00972G108
—	FORWARD PHARMA A/S	101,995	$2,403	1.1%	$23.61	—	SPONSORED ADR	34986J105
—	FIVE PRIME THERAPEUTICS INC	149,000	$2,293	1.0%	$15.39	—	COM	33830X104
—	CALITHERA BIOSCIENCES INC	415,480	$2,256	1.0%	$15.57	—	COM	13089P101
—	GILEAD SCIENCES INC	3,255	$2,148	1.0%	—	—	Call	375558903
—	OREXIGEN THERAPEUTICS INC	937,958	$1,979	0.9%	$2.11	—	COM	686164104
—	QLT INC	638,900	$1,699	0.8%	$3.58	—	COM	746927102
—	VALEANT PHARMACEUTICALS INTL	1,265	$1,347	0.6%	—	—	Call	91911K902
—	CATALYST BIOSCIENCES INC	56,000	$261	0.1%	$4.66	—	COM	14888D109
—	REGULUS THERAPEUTICS INC	1,280	$35	0.0%	—	—	Call	75915K901