13F

Stock

Ionis Pharmaceuticals Inc

IONS · held by 21 managers

Reported value

$274.3M

Holders

21

+6 new · −0 exited

Holders’ est. mark

$36.3M

Price effect on 3 books still in the name

Largest holder

$94.9M

MORGAN STANLEY

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
MORGAN STANLEY14M$94.9MHeld
BANK OF AMERICA CORP /DE/3.12M$59.1MHeld
BARCLAYS PLC917K$47M$36.2MAdded$22.4M
GROUPAMA ASSET MANAGMENT1.06M$37.4MHeld
Hudson Bay Capital Management LP515K$33.7MHeld
Savant Capital, LLC7.24K$473.4K$144.3KAdded$253.4K
Swiss Life Asset Management Ltd6.83K$446.6KNew
PEAK6 LLC6.11K$399.8KNew
FARALLON CAPITAL MANAGEMENT LLC4.8K$314KNew
NWAM LLC3.24K$238.2KNew
Sanctuary Advisors, LLC3.64K$237.9KNew
IFP Advisors, Inc1.07K$70KHeld
Allworth Financial LP840$55KHeld
AllSquare Wealth Management LLC198$13KHeld
Leonteq Securities AG63$4.12K$1.63KAdded$1.63K
Principia Wealth Advisory, LLC26$1.7KHeld
Essential Partners LLC7$458New
KBC Group NV4.7K$307Held

Who left

Positions as of Q3 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.