HolderBook

ALPHA COGNITION INC (ACOG)

Institutional ownership reported to the SEC as of Q2 2026, across 7 quarters.

26
Reporting holders
$77.2M
Reported value
49.1%
Of shares outstanding
0.0%
Calls
0.0%
Puts
+1
Holder change

Institutions report 10,695,471 shares against 21,777,868 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.

Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.

Holders

Download these holders as CSV

FilerValueShares Their book Held Change
Opaleye Management Inc.$20.9M2,895,4671.89%4q+13.0%+$2.4M
Solas Capital Management, LLC$13.9M1,924,6177.45%7qHELD
AWM Investment Company, Inc.$12.1M1,672,1681.05%6qHELD
Cable Car Capital, LP$10.0M1,382,3390.21%7qHELD
Ikarian Capital, LLC$6.0M836,2590.65%7q-20.8%-$1.6M
SPHERA FUNDS MANAGEMENT LTD.$3.9M545,8160.51%7q-3.8%-$157.4K
Alyeska Investment Group, L.P.$2.6M365,0000.01%3qHELD
Aristides Capital LLC$1.6M218,5100.31%7qHELD
CANTOR FITZGERALD, L. P.$1.6M217,8360.01%3q+15.5%+$210.9K
CITADEL ADVISORS LLC$1.4M195,0920.00%3q+117.8%+$761.7K
BOOTHBAY FUND MANAGEMENT, LLC$1.4M189,1480.02%7q-26.2%-$485.5K
VILLERE ST DENIS J & CO LLC$513.8K71,1580.06%7qHELD
TUDOR INVESTMENT CORP ET AL$444.7K61,5960.00%7qHELD
ACT CAPITAL MANAGEMENT, LLC$371.8K51,5000.24%3qHELD
BERKSHIRE ASSET MANAGEMENT LLC/PA$143.1K19,8240.01%5qHELD
TWO SIGMA INVESTMENTS, LP$136.0K18,8320.00%4q+18.5%+$21.3K
GEODE CAPITAL MANAGEMENT, LLC$86.6K11,9920.00%5qHELD
RAYMOND JAMES FINANCIAL INC$72.2K10,0000.00%2qHELD
NATIONAL BANK OF CANADA /FI/$37.7K5,2920.00%7qHELD
UBS Group AG$10.5K1,4560.00%5q+232.4%+$7.3K
Allworth Financial LP$5.4K7500.00%3qHELD
JONES FINANCIAL COMPANIES LLLP$1.6K2500.00%2q+150.0%
MORGAN STANLEY$1.4K2000.00%newNEW
Steward Partners Investment Advisory, LLC$1.4K2000.00%7qHELD
ROYAL BANK OF CANADA$1.0K1220.00%7q-82.0%-$4.6K
HARBOUR INVESTMENTS, INC.$336470.00%2q+1075.0%

Five percent filings

Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →

FiledFormFiler % of class
2026-09-2313GJames E. Besser INDIVIDUALwith 4 co-filers7.4%
2026-07-2413G/AOpaleye Management Inc.with 2 co-filers14.2%

What the insiders did

Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.

Ten percent owners and entities

Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.

DateInsiderRoleSideSharesValue
2026-07-22Opaleye Management Inc.10% ownerBought150,237$1.2M ×2
2026-06-26Opaleye Management Inc.10% ownerBought152,336$975.2K
2026-09-16Opaleye Management Inc.10% ownerBought80,170$682.6K ×2
2026-05-29Opaleye Management Inc.10% ownerBought70,577$416.4K
2026-08-03Opaleye Management Inc.10% ownerBought50,000$400.0K
2026-07-23Opaleye Management Inc.10% ownerBought49,849$388.6K

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
Q2 202626$77.2M10,695,4711740.0%
Q1 202625$57.8M10,532,4913550.0%
Q4 202527$64.4M9,909,10071130.0%
Q3 202528$36.7M5,643,1217650.0%
Q2 202526$53.4M5,719,1619480.0%
Q1 202522$32.4M6,338,4632470.0%
Q4 202423$34.9M5,943,39723000.0%