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EcoR1 Capital Portfolio holdings

AUM $2.06B
1-Year Est. Return 215.32%
This Fund
S&P 500
This Quarter Est. Return
+13.6%
1 Year Est. Return
+215.32%
3 Year Est. Return
+310.3%
5 Year Est. Return
+497.45%
10 Year Est. Return
+14,692.23%
AUM
$300M
AUM Growth
-$135K
Cap. Flow
-$18M
Cap. Flow %
-6.01%
Top 10 Hldgs %
82.64%
Holding
32
New
9
Increased
4
Reduced
2
Closed
7

Top Buys

Rank Stock Value
1
KYNB
Kyntra Bio
KYNB
+$18.7M
2
ATYR
aTyr Pharma
ATYR
+$18.6M
3
EIGR
Eiger BioPharmaceuticals, Inc.
EIGR
+$17.5M
4
COLL icon
Collegium Pharmaceutical
COLL
+$8.04M
5
ARRY
Array Biopharma Inc
ARRY
+$2.95M

Top Sells

Rank Stock Value
1
RCPT
RECEPTOS INC COM STK (DE)
RCPT
+$24.9M
2
CLVS
Clovis Oncology, Inc.
CLVS
+$18M
3
IRWD icon
Ironwood Pharmaceuticals
IRWD
+$14.4M
4
SAGE
Sage Therapeutics
SAGE
+$5.65M
5
FLXN
Flexion Therapeutics, Inc.
FLXN
+$3.67M

Sector Composition

Rank Sector Weight
1 Healthcare 85.8%
2 Miscellaneous 14.2%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IRWD icon
26
Ironwood Pharmaceuticals
IRWD
$682M
– –
-1,074,600
Closed -$14.4M
SAGE
27
DELISTED
Sage Therapeutics
SAGE
– –
-112,455
Closed -$5.65M
CLVS
28
DELISTED
Clovis Oncology, Inc.
CLVS
– –
-243,048
Closed -$18M
CLVS
29
PUT
DELISTED
Clovis Oncology, Inc.
CLVS
– –
-2,500
Closed -$18.6M
FLXN
30
DELISTED
Flexion Therapeutics, Inc.
FLXN
– –
-162,900
Closed -$3.67M
RCPT
31
DELISTED
RECEPTOS INC COM STK (DE)
RCPT
– –
-151,301
Closed -$24.9M
1
2

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EcoR1 Capital's Q2 2015 Portfolio in Review

As of Q2 2015, EcoR1 Capital held 32 positions worth $300M, down 0.04% from $300M the previous quarter. Its ten largest holdings account for 83% of the portfolio.

EcoR1 Capital withdrew a net $18M in Q2 2015, closing 7 positions and reducing 2 holdings. Its most notable exit was RECEPTOS INC COM STK (DE), an estimated $24.9M position sold in full.

By sector, the portfolio is most concentrated in Healthcare at 86% of assets, up from 74% a quarter earlier, followed by Miscellaneous.

Against the trend, EcoR1 Capital opened a new position in aTyr Pharma worth $15.5M.

  • EcoR1 Capital's largest Q2 2015 buy was aTyr Pharma: 59,776 shares worth $15.5M.
  • EcoR1 Capital added most to Kyntra Bio in Q2 2015, an estimated $18.7M increase.
  • EcoR1 Capital's biggest Q2 2015 reduction was Xenon Pharmaceuticals, cutting an estimated $2.04M.
  • EcoR1 Capital fully exited RECEPTOS INC COM STK (DE) in Q2 2015, selling an estimated $24.9M.
  • EcoR1 Capital's ten largest holdings make up 83% of its $300M portfolio in Q2 2015.
  • EcoR1 Capital opened 9 new positions and closed 7 in Q2 2015.
  • EcoR1 Capital's portfolio value fell 0.04% quarter-over-quarter to $300M.

Based on EcoR1 Capital's 13F filing for Q2 2015, filed 14 Aug 2015.