Proteostasis Therapeutics Inc (PTI) Ownership

Institutional Ownership

Ikarian Capital, LLC is the biggest individual institutional holder of Proteostasis Therapeutics Inc (PTI), owning a total of 2.4 million shares. Combined, the top 20 institutional holders of PTI own 223.92% of the company with a total of 5.8 million shares.

In the latest ownership report on December 31st 2020, the top 20 institutional holders decreased their combined ownership of PTI by 3 thousand shares. None of the institutional holders bought any additional shares. However 2 institutions sold 2,620 total shares and decreased their ownership by an average of 100%.

Overall this is a negative sign as the number of shares owned by the top 20 institutional holders of Proteostasis Therapeutics decreased by a net total of -2,620 in the latest quarter.

Institution Ownership Chart

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Latest Institutional Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
California Public Employees Retrmnt Sys0.000%-100.000%0-2,0602020-12-31
State Street Corporation0.000%-100.000%0-5602020-12-31

Top Institutions

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Ikarian Capital, LLC91.594%0.000%2,389,8912,389,8912020-09-30
BlackRock Inc41.591%-0.153%1,085,207-1,6602020-09-30
Bain Capital Public Equity Management II, LLC25.270%-12.731%659,350-96,1862020-09-30
Harbourvest Partners, LLC16.887%0.000%440,62702020-09-30
Millennium Management LLC15.499%663.505%404,398351,4322020-09-30
Qube Research & Technologies11.122%0.000%290,207290,2072020-09-30
Bridgeway Capital Management, LLC10.348%-15.625%270,000-50,0002020-09-30
Two Sigma Advisers, LLC6.228%-12.915%162,500-24,1002020-09-30
Susquehanna International Group, LLP2.310%-58.537%60,261-85,0742020-09-30
Tower Research Capital LLC1.280%197.496%33,39122,1672020-09-30
Royal Bank of Canada1.177%-46.333%30,700-26,5052020-09-30
Nelson, Van Denburg & Campbell Wealth Management G0.249%30.000%6,5001,5002020-09-30
FLAGSHIP HARBOR ADVISORS, LLC0.192%0.000%5,00002020-09-30
Morgan Stanley - Brokerage Accounts0.153%0.000%4,00002020-09-30
Dimension Capital Management LLC0.013%0.000%3283282020-09-30
Advisor Group Holdings, Inc.0.006%0.000%15002020-09-30
CAROLINAS WEALTH CONSULTING LLC0.004%0.000%10002020-09-30
California Public Employees Retrmnt Sys0.000%-100.000%0-2,0602020-12-31
State Street Corporation0.000%-100.000%0-5602020-12-31
Goldman Sachs Group Inc0.000%-100.000%0-36,3382020-09-30

Mutual Fund Ownership

Northern Trust Extended Eq Market Idx is the biggest individual fund holder of Proteostasis Therapeutics Inc (PTI), owning a total of 35 thousand shares. Combined, the top 18 mutual fund holders of PTI own 7.15% of the company with a total of 61 thousand shares.

In the latest ownership report on January 29th 2021, the top 18 fund holders not made any changes to their ownership of PTI. None of the mutual funds bought any additional shares.

Overall this is a neutral sign as the number of shares owned by the top 20 mutual funds holding Proteostasis Therapeutics stayed the same in the latest report.

Mutual Funds Chart

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Latest Mutual Fund Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
iShares Core S&P Total US Stock Mkt ETF5.086%0.000%6,63502021-01-29

Top Mutual Funds

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Northern Trust Extended Eq Market Idx1.333%10.078%34,7903,1852020-06-30
Dimensional Global Small Coms USD Acc0.318%0.000%8,30002020-09-30
iShares Core S&P Total US Stock Mkt ETF5.086%0.000%6,63502021-01-29
Inversiones Lutimo SICAV0.184%0.524%4,798252020-06-30
Northern Trust Wilshire 50000.174%-23.087%4,534-1,3612020-06-30
Blackstone Alternative Multi-Strategy I0.058%-25.000%1,500-5002020-09-30
Vanguard U.S. Eq Idx £ Acc0.000%-100.000%0-5522020-12-31
Vanguard U.S. All-Cap Equity Idx Pooled0.000%-100.000%0-2292020-11-30
Vanguard Instl Ttl Stk Mkt Idx InstlPls0.000%-100.000%0-46,4422020-08-31
Vanguard Balanced Index Inv0.000%-100.000%0-2,9232020-12-31
Symmetry Moderate Growth Port Cl A0.000%-100.000%0-402020-06-30
Symmetry Equity Port Cl W0.000%-100.000%0-102020-06-30
Symmetry Conservative Port A0.000%-100.000%0-1412020-06-30
NT US Market Cap Idx Fd - L0.000%-100.000%0-2272020-12-31
NT Ext Equity Mkt Idx Fd - NL0.000%-100.000%0-1,6702020-12-31
iShares Core Growth ETF Portfolio0.000%-100.000%0-302020-12-24
iShares Core MSCI ACty Wld exCan ETF0.000%-100.000%0-52020-12-24
JNL/DFA US Small Cap A0.000%-100.000%0-1952020-12-31

Discussions

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7starRestaurant

$PTI we all speculate but nobody knows what going to happen.

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iburnmoney

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micmic

$PTI just go up

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delaina

$PTI Market is down
No worries

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jchonnee

$PTI omg this is bullshit

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