EcoR1 Capital, LLC Buys Shattuck Labs Inc, Solid Biosciences Inc, Chinook Therapeutics Inc, Sells Kura Oncology Inc, Assembly Biosciences Inc, Sutro Biopharma Inc

• New Purchases: STTK, SLDB, KDNY, GRTS, ACIU, KRON, SYRS, DFHT, CERE, LOGC, GLPG, NGM, CDAK, GOSS, KNTE,
• Added Positions: ORIC, RCUS,
• Reduced Positions: KURA, STRO, SURF, NLTX, CYCN, GERN, ACRS,
• Sold Out: ASMB, GLYC, RPRX, FPRX, XCUR, XOMA, UBX, SVRA,

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

1. Xencor Inc (XNCR) - 4,547,072 shares, 12.89% of the total portfolio.
2. Relay Therapeutics Inc (RLAY) - 3,200,649 shares, 8.64% of the total portfolio.
3. Shattuck Labs Inc (STTK) - 2,456,854 shares, 8.37% of the total portfolio. New Position
4. Prothena Corp PLC (PRTA) - 9,426,640 shares, 7.36% of the total portfolio.
5. ORIC Pharmaceuticals Inc (ORIC) - 3,092,218 shares, 6.80% of the total portfolio. Shares added by 17.03%

EcoR1 Capital, LLC initiated holding in Shattuck Labs Inc. The purchase prices were between $19 and $57.61, with an estimated average price of $32.14. The stock is now traded at around $30.330000. The impact to a portfolio due to this purchase was 8.37%. The holding were 2,456,854 shares as of 2020-12-31.

EcoR1 Capital, LLC initiated holding in Solid Biosciences Inc. The purchase prices were between $3.08 and $7.79, with an estimated average price of $4.23. The stock is now traded at around $5.810000. The impact to a portfolio due to this purchase was 3.93%. The holding were 7,977,702 shares as of 2020-12-31.

EcoR1 Capital, LLC initiated holding in Chinook Therapeutics Inc. The purchase prices were between $11.9 and $20.91, with an estimated average price of $15.13. The stock is now traded at around $17.250000. The impact to a portfolio due to this purchase was 1.29%. The holding were 1,250,001 shares as of 2020-12-31.

EcoR1 Capital, LLC initiated holding in Gritstone Oncology Inc. The purchase prices were between $2.57 and $4.22, with an estimated average price of $3.03. The stock is now traded at around $10.499900. The impact to a portfolio due to this purchase was 0.88%. The holding were 3,421,287 shares as of 2020-12-31.

EcoR1 Capital, LLC initiated holding in AC Immune SA. The purchase prices were between $4.47 and $5.58, with an estimated average price of $5.11. The stock is now traded at around $7.810000. The impact to a portfolio due to this purchase was 0.81%. The holding were 2,410,240 shares as of 2020-12-31.

EcoR1 Capital, LLC initiated holding in Kronos Bio Inc. The purchase prices were between $26.68 and $38.23, with an estimated average price of $31.37. The stock is now traded at around $28.045000. The impact to a portfolio due to this purchase was 0.75%. The holding were 387,357 shares as of 2020-12-31.

EcoR1 Capital, LLC added to a holding in Arcus Biosciences Inc by 21.32%. The purchase prices were between $17 and $32.36, with an estimated average price of $24.32. The stock is now traded at around $33.040000. The impact to a portfolio due to this purchase was 0.65%. The holding were 2,195,892 shares as of 2020-12-31.

EcoR1 Capital, LLC sold out a holding in Assembly Biosciences Inc. The sale prices were between $4.87 and $16.99, with an estimated average price of $9.66.

EcoR1 Capital, LLC sold out a holding in GlycoMimetics Inc. The sale prices were between $2.69 and $4.24, with an estimated average price of $3.51.

EcoR1 Capital, LLC sold out a holding in Royalty Pharma PLC. The sale prices were between $36.12 and $50.05, with an estimated average price of $42.42.

EcoR1 Capital, LLC sold out a holding in Exicure Inc. The sale prices were between $1.4 and $2.1, with an estimated average price of $1.67.

EcoR1 Capital, LLC sold out a holding in Five Prime Therapeutics Inc. The sale prices were between $4.56 and $22.43, with an estimated average price of $12.65.

EcoR1 Capital, LLC sold out a holding in Unity Biotechnology Inc. The sale prices were between $3.5 and $6.36, with an estimated average price of $4.84.

EcoR1 Capital, LLC reduced to a holding in Kura Oncology Inc by 61.53%. The sale prices were between $29 and $41.62, with an estimated average price of $35.21. The stock is now traded at around $26.610000. The impact to a portfolio due to this sale was -7.03%. EcoR1 Capital, LLC still held 1,773,037 shares as of 2020-12-31.

EcoR1 Capital, LLC reduced to a holding in Sutro Biopharma Inc by 97%. The sale prices were between $10.16 and $23.98, with an estimated average price of $16.66. The stock is now traded at around $22.580000. The impact to a portfolio due to this sale was -2.45%. EcoR1 Capital, LLC still held 93,416 shares as of 2020-12-31.

EcoR1 Capital, LLC reduced to a holding in Surface Oncology Inc by 98.54%. The sale prices were between $6.87 and $10.48, with an estimated average price of $8.72. The stock is now traded at around $8.175000. The impact to a portfolio due to this sale was -1.83%. EcoR1 Capital, LLC still held 48,558 shares as of 2020-12-31.

EcoR1 Capital, LLC reduced to a holding in Cyclerion Therapeutics Inc by 41.43%. The sale prices were between $2.25 and $7.12, with an estimated average price of $3.36. The stock is now traded at around $3.460000. The impact to a portfolio due to this sale was -0.56%. EcoR1 Capital, LLC still held 1,606,276 shares as of 2020-12-31.