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EcoR1 Capital, LLC Buys CRISPR Therapeutics AG, Ultragenyx Pharmaceutical Inc, Xencor Inc, Sells FibroGen Inc, Ionis Pharmaceuticals Inc, Assembly Biosciences Inc

San Francisco, CA, based Investment company EcoR1 Capital, LLC buys CRISPR Therapeutics AG, Ultragenyx Pharmaceutical Inc, Xencor Inc, Mirati Therapeutics Inc, Gossamer Bio Inc, Chiasma Inc, MyoKardia Inc, Mersana Therapeutics Inc, Aduro Biotech Inc, Vericel Corp, Sienna Biopharmaceuticals Inc, sells FibroGen Inc, Ionis Pharmaceuticals Inc, Assembly Biosciences Inc, Scholar Rock Holding Corp, Spark Therapeutics Inc, Solid Biosciences Inc, Ascendis Pharma A/S, Akcea Therapeutics Inc, Sangamo Therapeutics Inc, Zai Lab, WAVE Life Sciences, Array BioPharma Inc, Immune Design Corp, Portola Pharmaceuticals Inc, Aclaris Therapeutics Inc, Arbutus Biopharma Corp, Five Prime Therapeutics Inc, Corcept Therapeutics Inc, Dynavax Technologies Corp, Corvus Pharmaceuticals Inc, Onconova Therapeutics Inc, Affimed NV, Constellation Pharmaceuticals Inc, ProQR Therapeutics NV during the 3-months ended 2019Q1, according to the most recent filings of the investment company, EcoR1 Capital, LLC. As of 2019Q1, EcoR1 Capital, LLC owns 36 stocks with a total value of $911 million. These are the details of the buys and sells.

For the details of EcoR1 Capital, LLC's stock buys and sells, go to https://www.gurufocus.com/guru/ecor1+capital%2C+llc/current-portfolio/portfolio

These are the top 5 holdings of EcoR1 Capital, LLC
  1. argenx SE (ARGX) - 825,087 shares, 11.30% of the total portfolio.
  2. Kura Oncology Inc (KURA) - 5,276,753 shares, 9.61% of the total portfolio.
  3. Mirati Therapeutics Inc (MRTX) - 1,000,000 shares, 8.04% of the total portfolio. Shares added by 54.52%
  4. CRISPR Therapeutics AG (CRSP) - 1,878,277 shares, 7.36% of the total portfolio. Shares added by 799.34%
  5. Xencor Inc (XNCR) - 2,059,429 shares, 7.02% of the total portfolio. Shares added by 108.23%
New Purchase: Ultragenyx Pharmaceutical Inc (RARE)

EcoR1 Capital, LLC initiated holding in Ultragenyx Pharmaceutical Inc. The purchase prices were between $39.87 and $69.36, with an estimated average price of $56.86. The stock is now traded at around $64.05. The impact to a portfolio due to this purchase was 3.79%. The holding were 497,899 shares as of .

New Purchase: Gossamer Bio Inc (GOSS)

EcoR1 Capital, LLC initiated holding in Gossamer Bio Inc. The purchase prices were between $17.58 and $23.97, with an estimated average price of $20.81. The stock is now traded at around $20.53. The impact to a portfolio due to this purchase was 1.84%. The holding were 772,096 shares as of .

New Purchase: Mersana Therapeutics Inc (MRSN)

EcoR1 Capital, LLC initiated holding in Mersana Therapeutics Inc. The purchase prices were between $3.51 and $7.3, with an estimated average price of $5.02. The stock is now traded at around $5.69. The impact to a portfolio due to this purchase was 1.33%. The holding were 2,300,000 shares as of .

New Purchase: Aduro Biotech Inc (ADRO)

EcoR1 Capital, LLC initiated holding in Aduro Biotech Inc. The purchase prices were between $2.42 and $4.3, with an estimated average price of $3.47. The stock is now traded at around $3.39. The impact to a portfolio due to this purchase was 0.85%. The holding were 1,939,390 shares as of .

New Purchase: Vericel Corp (VCEL)

EcoR1 Capital, LLC initiated holding in Vericel Corp. The purchase prices were between $16.23 and $20.29, with an estimated average price of $18.29. The stock is now traded at around $17.53. The impact to a portfolio due to this purchase was 0.25%. The holding were 131,001 shares as of .

New Purchase: Sienna Biopharmaceuticals Inc (SNNA)

EcoR1 Capital, LLC initiated holding in Sienna Biopharmaceuticals Inc. The purchase prices were between $2.32 and $3.25, with an estimated average price of $2.71. The stock is now traded at around $1.33. The impact to a portfolio due to this purchase was 0.2%. The holding were 800,000 shares as of .

Added: CRISPR Therapeutics AG (CRSP)

EcoR1 Capital, LLC added to a holding in CRISPR Therapeutics AG by 799.34%. The purchase prices were between $28.02 and $40.87, with an estimated average price of $34.47. The stock is now traded at around $39.30. The impact to a portfolio due to this purchase was 6.54%. The holding were 1,878,277 shares as of .

Added: Xencor Inc (XNCR)

EcoR1 Capital, LLC added to a holding in Xencor Inc by 108.23%. The purchase prices were between $27.85 and $38.09, with an estimated average price of $33.37. The stock is now traded at around $34.95. The impact to a portfolio due to this purchase was 3.65%. The holding were 2,059,429 shares as of .

Added: Mirati Therapeutics Inc (MRTX)

EcoR1 Capital, LLC added to a holding in Mirati Therapeutics Inc by 54.52%. The purchase prices were between $42.42 and $78.95, with an estimated average price of $67.65. The stock is now traded at around $70.22. The impact to a portfolio due to this purchase was 2.84%. The holding were 1,000,000 shares as of .

Added: Chiasma Inc (CHMA)

EcoR1 Capital, LLC added to a holding in Chiasma Inc by 701.53%. The purchase prices were between $2.98 and $6.93, with an estimated average price of $4.37. The stock is now traded at around $6.07. The impact to a portfolio due to this purchase was 1.52%. The holding were 3,043,827 shares as of .

Added: MyoKardia Inc (MYOK)

EcoR1 Capital, LLC added to a holding in MyoKardia Inc by 104.19%. The purchase prices were between $39.23 and $55.82, with an estimated average price of $46.05. The stock is now traded at around $48.61. The impact to a portfolio due to this purchase was 1.39%. The holding were 478,574 shares as of .

Sold Out: Ionis Pharmaceuticals Inc (IONS)

EcoR1 Capital, LLC sold out a holding in Ionis Pharmaceuticals Inc. The sale prices were between $52.92 and $81.17, with an estimated average price of $64.16.

Sold Out: Solid Biosciences Inc (SLDB)

EcoR1 Capital, LLC sold out a holding in Solid Biosciences Inc. The sale prices were between $7.19 and $32.37, with an estimated average price of $16.87.

Sold Out: Akcea Therapeutics Inc (AKCA)

EcoR1 Capital, LLC sold out a holding in Akcea Therapeutics Inc. The sale prices were between $25.45 and $34.03, with an estimated average price of $29.13.

Sold Out: Sangamo Therapeutics Inc (SGMO)

EcoR1 Capital, LLC sold out a holding in Sangamo Therapeutics Inc. The sale prices were between $7.72 and $12.81, with an estimated average price of $10.23.

Sold Out: WAVE Life Sciences Ltd (WVE)

EcoR1 Capital, LLC sold out a holding in WAVE Life Sciences Ltd. The sale prices were between $32.69 and $47.91, with an estimated average price of $40.58.

Sold Out: Array BioPharma Inc (ARRY)

EcoR1 Capital, LLC sold out a holding in Array BioPharma Inc. The sale prices were between $14.25 and $24.45, with an estimated average price of $20.7.



Here is the complete portfolio of EcoR1 Capital, LLC. Also check out:

1. EcoR1 Capital, LLC's Undervalued Stocks
2. EcoR1 Capital, LLC's Top Growth Companies, and
3. EcoR1 Capital, LLC's High Yield stocks
4. Stocks that EcoR1 Capital, LLC keeps buying

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