EcoR1 Capital’s MyoKardia, Inc. Common Stock MYOK Stock Holding History

EcoR1 Capital’s Portfolio MYOK Stock Details MYOK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q2	–	Sell	-478,574	Closed	-$24.9M	–	52
2019 Q1	$24.9M	Buy	478,574 +244,193	+104%	+$11.2M	2.29%	14
2018 Q4	$11.5M	Buy	+234,381	New	+$12.9M	1.15%	28
2018 Q1	–	Sell	-778,393	Closed	-$32.8M	–	39
2017 Q4	$32.8M	Buy	778,393 +88,407	+13%	+$3.41M	3.69%	10
2017 Q3	$29.6M	Buy	+689,986	New	+$22M	3.94%	7

Other funds holding MYOK

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

FCM

Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return

PHS

PFM Health Sciences San Francisco, California $1.17B AUM 92.19% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return

Casdin Capital New York $2B AUM 147.21% 1-Year Est. Return

Bellevue Group Kuesnacht, Switzerland $4.75B AUM 68.58% 1-Year Est. Return

EcoR1 Capital's MYOK Position: Q2 2019 in Review

EcoR1 Capital sold out of MyoKardia, Inc. Common Stock (MYOK) in Q2 2019, closing a stake of 478,574 shares — an estimated $24.9M sold.

EcoR1 Capital first reported a position in MYOK in Q3 2017 and held it in 4 quarters. The position peaked at $32.8M in Q4 2017. 155 funds tracked by Wall St. Rank hold MYOK as of Q2 2019.

EcoR1 Capital reported no remaining MyoKardia, Inc. Common Stock position as of Q2 2019 after selling out during the quarter.
EcoR1 Capital sold 478,574 MyoKardia, Inc. Common Stock shares in Q2 2019, an estimated $24.9M.
EcoR1 Capital first reported a position in MyoKardia, Inc. Common Stock in Q3 2017 and held it in 4 quarters.
EcoR1 Capital's MyoKardia, Inc. Common Stock position peaked at $32.8M in Q4 2017.
155 funds tracked by Wall St. Rank held MyoKardia, Inc. Common Stock as of Q2 2019.

Based on EcoR1 Capital's 13F filing for Q2 2019, filed 14 Aug 2019.