Rock Springs Capital Management’s MyoKardia, Inc. Common Stock MYOK Stock Holding History

Rock Springs Capital Management’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
2020 Q3	–	Sell	-172,716	Closed	-$16.7M	–	161
2020 Q2	$16.7M	Buy	172,716 +7,716	+5%	+$644K	0.46%	73
2020 Q1	$7.74M	Buy	165,000 +5,000	+3%	+$320K	0.32%	84
2019 Q4	$11.7M	Buy	+160,000	New	+$9.7M	0.37%	81
2017 Q4	–	Sell	-40,000	Closed	-$1.71M	–	153
2017 Q3	$1.71M	Buy	+40,000	New	+$1.28M	0.08%	133

Other funds holding MYOK

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

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

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

FCM

Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return

Rock Springs Capital Management's MYOK Position: Q3 2020 in Review

Rock Springs Capital Management sold out of MyoKardia, Inc. Common Stock (MYOK) in Q3 2020, closing a stake of 172,716 shares — an estimated $16.7M sold.

Rock Springs Capital Management first reported a position in MYOK in Q3 2017 and held it in 4 quarters. The position peaked at $16.7M in Q2 2020. 237 funds tracked by Wall St. Rank hold MYOK as of Q3 2020.

Rock Springs Capital Management reported no remaining MyoKardia, Inc. Common Stock position as of Q3 2020 after selling out during the quarter.
Rock Springs Capital Management sold 172,716 MyoKardia, Inc. Common Stock shares in Q3 2020, an estimated $16.7M.
Rock Springs Capital Management first reported a position in MyoKardia, Inc. Common Stock in Q3 2017 and held it in 4 quarters.
Rock Springs Capital Management's MyoKardia, Inc. Common Stock position peaked at $16.7M in Q2 2020.
237 funds tracked by Wall St. Rank held MyoKardia, Inc. Common Stock as of Q3 2020.

Based on Rock Springs Capital Management's 13F filing for Q3 2020, filed 16 Nov 2020.