Primecap Management’s MyoKardia, Inc. Common Stock MYOK Stock Holding History

Primecap 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 Q4	–	Sell	-88,000	Closed	-$12M	–	325
2020 Q3	$12M	Hold	88,000	–	–	0.01%	235
2020 Q2	$8.5M	Sell	88,000 -97,900	-53%	-$8.17M	0.01%	232
2020 Q1	$8.71M	Sell	185,900 -110,826	-37%	-$7.1M	0.01%	220
2019 Q4	$21.6M	Sell	296,726 -5,474	-2%	-$332K	0.02%	209
2019 Q3	$15.8M	Buy	302,200 +32,500	+12%	+$1.73M	0.01%	218
2019 Q2	$13.5M	Buy	+269,700	New	+$13.1M	0.01%	232

Primecap Management's MYOK Position: Q4 2020 in Review

Primecap Management sold out of MyoKardia, Inc. Common Stock (MYOK) in Q4 2020, closing a stake of 88,000 shares — an estimated $12M sold.

Primecap Management first reported a position in MYOK in Q2 2019 and held it in 6 quarters. The position peaked at $21.6M in Q4 2019. 0 funds tracked by Wall St. Rank hold MYOK as of Q4 2020.

Primecap Management reported no remaining MyoKardia, Inc. Common Stock position as of Q4 2020 after selling out during the quarter.
Primecap Management sold 88,000 MyoKardia, Inc. Common Stock shares in Q4 2020, an estimated $12M.
Primecap Management first reported a position in MyoKardia, Inc. Common Stock in Q2 2019 and held it in 6 quarters.
Primecap Management's MyoKardia, Inc. Common Stock position peaked at $21.6M in Q4 2019.
0 funds tracked by Wall St. Rank held MyoKardia, Inc. Common Stock as of Q4 2020.

Based on Primecap Management's 13F filing for Q4 2020, filed 8 Feb 2021.