HolderBook

PROTEOSTASIS THERAPEUTICS IN (PTI)

Institutional ownership reported to the SEC as of Q3 2020, across 8 quarters.

40
Reporting holders
$12.7M
Reported value
2.3%
Held as options
-7
Holder change

Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.

Holders

FilerValueShares Their book Held Change
Ikarian Capital, LLC$2.6M2,389,8910.19%newNEW
VANGUARD GROUP INC$2.0M1,781,1710.00%8q-2.5%-$51.1K
JENNISON ASSOCIATES LLC$1.3M1,145,7400.00%newNEW
BlackRock Inc.$1.2M1,085,2070.00%8qHELD
MACQUARIE GROUP LTD$825.0K750,0000.00%8qHELD
Bain Capital Public Equity Management II, LLC$725.0K659,3500.05%6q-12.7%-$105.8K
HarbourVest Partners LLC$485.0K440,6270.18%8qHELD
MILLENNIUM MANAGEMENT LLC$445.0K404,3980.00%3q+663.5%+$386.7K
GEODE CAPITAL MANAGEMENT, LLC$363.0K330,5860.00%8qHELD
ACADIAN ASSET MANAGEMENT LLC$332.0K301,6330.00%7q-14.6%-$56.6K
Qube Research & Technologies Ltd$319.0K290,2070.00%2q+411.6%+$256.6K
BRIDGEWAY CAPITAL MANAGEMENT INC$297.0K270,0000.01%5q-15.6%-$55.0K
BOOTHBAY FUND MANAGEMENT, LLC$288.0K262,1080.02%newNEW
RENAISSANCE TECHNOLOGIES LLC$259.0K235,2630.00%2q+24.2%+$50.5K
RBF Capital, LLC$183.0K166,0780.02%4qHELD
TWO SIGMA ADVISERS, LP$179.0K162,5000.00%8q-12.9%-$26.5K
GROUP ONE TRADING, L.P.$133.0Koptions only0.00%8qOPTIONS
GSA CAPITAL PARTNERS LLP$131.0K119,2840.02%3q+138.2%+$76.0K
SUSQUEHANNA INTERNATIONAL GROUP, LLP$131.0K60,2610.00%8q-58.5%-$184.9K
NORTHERN TRUST CORP$89.0K80,6070.00%8q+6.8%+$5.7K
CITADEL ADVISORS LLC$88.0K30,9120.00%8q-71.0%-$215.4K
WELLS FARGO & COMPANY/MN$69.0K62,9820.00%2q-4.1%-$3.0K
SIMPLEX TRADING, LLC$47.0K11,9910.00%4q-62.8%-$79.4K
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM$45.0K41,2000.00%8qHELD
Tower Research Capital LLC (TRC)$37.0K33,3910.00%2q+201.0%+$24.7K
ROYAL BANK OF CANADA$34.0K30,7000.00%8q-46.3%-$29.4K
9258 Wealth Management, LLC$23.0K23,3650.01%4qHELD
COMMONWEALTH EQUITY SERVICES, LLC$21.0K19,8470.00%2q+1.0%
DIMENSIONAL FUND ADVISORS LP$20.0K18,0000.00%4qHELD
BLAIR WILLIAM & CO/IL$18.0K16,5550.00%3q-44.9%-$14.7K
LPL Financial LLC$15.0K13,6500.00%newNEW
STATE STREET CORP$12.0K11,2000.00%8qHELD
Lehman & Derafelo Financial Resources LLC$12.0K10,8000.00%3q-1.8%
Nelson, Van Denburg & Campbell Wealth Management Group, LLC$7.0K6,5000.00%2q+30.0%+$1.6K
UBS Group AG$6.0K5,8740.00%4q-60.7%-$9.3K
BANK OF AMERICA CORP /DE/$5.0K4,7940.00%newNEW
FLAGSHIP HARBOR ADVISORS, LLC$5.0K5,0000.00%2qHELD
MORGAN STANLEY$4.0K4,0000.00%4qHELD
Cutler Group LP$4.0K3,9000.00%8qHELD
American Portfolios Advisors$1651500.00%11qHELD

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q3 202040$12.7M11,289,72258132.3%
Q2 202047$12.5M8,679,431910144.5%
Q1 202042$13.4M11,024,16271195.9%
Q4 201950$30.3M11,739,4901915811.8%
Q3 201947$18.0M21,210,07345220.6%
Q2 201958$25.5M25,127,456713253.9%
Q1 201985$43.1M30,730,30025232210.1%
Q4 201891$134.7M40,416,7666203.0%