MyoKardia Inc (MYOK) Ownership

Institutions
Mutual Funds

Institutional Ownership

FMR Inc is the biggest individual institutional holder of MyoKardia Inc (MYOK), owning a total of 8 million shares. Combined, the top 20 institutional holders of MYOK own 77.70% of the company with a total of 41.4 million shares.

In the latest ownership report on September 30th 2020, the top 20 institutional holders increased their combined ownership of MYOK by 1.2 million shares. 6 institutions bought 2,382,700 total additional shares and increased their ownership by an average of 34.20%. However 9 institutions sold 1,216,706 total shares and decreased their ownership by an average of 7.1%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of MyoKardia increased by a net total of 1,165,994 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
FMR Inc	14.910%	0.393%	7,950,467	31,140	2020-09-30
T. Rowe Price Associates, Inc.	10.279%	29.087%	5,480,943	1,235,028	2020-09-30
Vanguard Group Inc	8.279%	-3.291%	4,414,431	-150,243	2020-09-30
BlackRock Inc	7.946%	-5.416%	4,237,157	-242,628	2020-09-30
Baker Bros Advisors LP	5.644%	-4.895%	3,009,344	-154,890	2020-09-30
Wellington Management Company LLP	4.358%	-10.465%	2,324,024	-271,621	2020-09-30
venBio Select Advisor LLC	3.535%	0.266%	1,885,000	5,000	2020-09-30
Perceptive Advisors LLC	2.616%	0.000%	1,395,017	0	2020-09-30
Amvescap Plc.	2.421%	130.449%	1,290,801	730,676	2020-09-30
Farallon Capital Management, L.L.C.	2.297%	40.000%	1,225,000	350,000	2020-09-30
Bellevue Group AG	2.116%	-6.614%	1,128,400	-79,913	2020-09-30
State Street Corporation	2.015%	-3.795%	1,074,189	-42,371	2020-09-30
RTW INVESTMENTS, LLC	1.757%	0.000%	936,931	0	2020-09-30
Casdin Capital, LLC	1.632%	0.000%	870,000	0	2020-09-30
Geode Capital Management, LLC	1.452%	-1.152%	774,288	-9,027	2020-09-30
D. E. Shaw & Co LP	1.413%	-23.950%	753,567	-237,315	2020-09-30
Deerfield Management Co	1.320%	0.000%	704,000	0	2020-09-30
Hillhouse Capital Advisors, Ltd.	1.295%	0.000%	690,658	0	2020-09-30
Pictet Asset Management Ltd	1.213%	5.008%	647,038	30,856	2020-09-30
Northern Trust Corp	1.198%	-4.300%	638,688	-28,698	2020-09-30

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
FMR Inc	14.910%	0.393%	7,950,467	31,140	2020-09-30
T. Rowe Price Associates, Inc.	10.279%	29.087%	5,480,943	1,235,028	2020-09-30
Vanguard Group Inc	8.279%	-3.291%	4,414,431	-150,243	2020-09-30
BlackRock Inc	7.946%	-5.416%	4,237,157	-242,628	2020-09-30
Baker Bros Advisors LP	5.644%	-4.895%	3,009,344	-154,890	2020-09-30
Wellington Management Company LLP	4.358%	-10.465%	2,324,024	-271,621	2020-09-30
venBio Select Advisor LLC	3.535%	0.266%	1,885,000	5,000	2020-09-30
Perceptive Advisors LLC	2.616%	0.000%	1,395,017	0	2020-09-30
Amvescap Plc.	2.421%	130.449%	1,290,801	730,676	2020-09-30
Farallon Capital Management, L.L.C.	2.297%	40.000%	1,225,000	350,000	2020-09-30
Bellevue Group AG	2.116%	-6.614%	1,128,400	-79,913	2020-09-30
State Street Corporation	2.015%	-3.795%	1,074,189	-42,371	2020-09-30
RTW INVESTMENTS, LLC	1.757%	0.000%	936,931	0	2020-09-30
Casdin Capital, LLC	1.632%	0.000%	870,000	0	2020-09-30
Geode Capital Management, LLC	1.452%	-1.152%	774,288	-9,027	2020-09-30
D. E. Shaw & Co LP	1.413%	-23.950%	753,567	-237,315	2020-09-30
Deerfield Management Co	1.320%	0.000%	704,000	0	2020-09-30
Hillhouse Capital Advisors, Ltd.	1.295%	0.000%	690,658	0	2020-09-30
Pictet Asset Management Ltd	1.213%	5.008%	647,038	30,856	2020-09-30
Northern Trust Corp	1.198%	-4.300%	638,688	-28,698	2020-09-30

Mutual Fund Ownership

T. Rowe Price New Horizons is the biggest individual fund holder of MyoKardia Inc (MYOK), owning a total of 1.3 million shares. Combined, the top 20 mutual fund holders of MYOK own 18.04% of the company with a total of 9.6 million shares.

In the latest ownership report on October 31st 2020, the top 20 fund holders increased their combined ownership of MYOK by 14 thousand shares. 1 funds bought 14,056 total additional shares and increased their ownership by an average of 4.53%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding MyoKardia increased by a net total of 14,056 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Fidelity® Small Cap Index	0.609%	4.525%	324,667	14,056	2020-10-31

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
T. Rowe Price New Horizons	2.374%	4.482%	1,265,775	54,300	2020-09-30
BB Biotech AG Ord	2.063%	-6.773%	1,100,000	-79,913	2020-09-30
T. Rowe Price Health Sciences	2.048%	38.947%	1,092,171	306,138	2020-09-30
Eventide Healthcare & Life Sciences I	1.165%	0.000%	621,000	0	2020-09-30
Invesco Large Cap Growth Composite	0.988%	42.207%	526,982	156,407	2020-09-30
Invesco American Franchise Y	0.988%	42.207%	526,982	156,407	2020-09-30
T. Rowe Price Small-Cap Stock	0.977%	-0.440%	521,027	-2,300	2020-09-30
Janus Henderson US SMID Cap Growth	0.787%	-21.771%	419,549	-116,757	2020-09-30
Janus Henderson Triton D	0.787%	-21.771%	419,549	-116,757	2020-09-30
T. Rowe Price QM US Small-Cap Gr Eq	0.679%	10.978%	361,899	35,800	2020-09-30
Wellington Global HlthC Eq G USD Acc Unh	0.674%	0.000%	359,386	0	2020-09-30
T. Rowe Price Mid-Cap Growth	0.671%	0.000%	357,737	357,737	2020-09-30
Fidelity® Small Cap Index	0.609%	4.525%	324,667	14,056	2020-10-31
Macquarie US Small Cap Core Equity	0.590%	0.000%	314,450	314,450	2020-09-30
T. Rowe Price Instl Small-Cap Stock	0.532%	2.089%	283,691	5,804	2020-09-30
T. Rowe Price US Small-Cap Core Equity	0.532%	2.089%	283,691	5,804	2020-09-30
Janus Henderson Venture D	0.432%	-11.220%	230,325	-29,108	2020-09-30
Janus Henderson US Small Cap Growth	0.432%	-11.220%	230,325	-29,108	2020-09-30
Rhenman Healthcare Equity L/S RC2 SEK	0.356%	0.000%	190,000	0	2020-09-30
Carillon Eagle Small Cap Growth A	0.352%	70.288%	187,892	77,554	2020-09-30