Promis Neurosciences Inc.: which funds bought and sold

Institutions that bought and sold Promis Neurosciences shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 10 institutions that filed 13F reports for both quarters added to or opened positions in Promis Neurosciences, and 8 cut or closed them. Together they added a net 259K shares, +5.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 95K shares (+4.1%); index fund managers held the same number of shares overall. 4 opened a new position and 2 sold out entirely.

Bought, Q2 2026 10 institutions, 4 of them new holders Sold, Q2 2026 8 institutions, 2 of them sold out

Net change, all compared +259K shares (+5.3%)

Net change, active managers +95K shares (+4.1%), 4 bought, 2 sold

Buyers versus sellers

institutions compared, 28

10 bought 10 8 sold

Active managers and hedge funds 4 bought · 2 sold · +95K

Index fund managers 0 bought · 0 sold · 0

Other institutions 6 bought · 6 sold · +164K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Ally Bridge Group (NY) LLC	+206K +49.8%	620K	$8.2M
Ameriprise Financial Inc	+186K New position	186K	$2.4M
Ikarian Capital, LLC	+150K +272.7%	205K	$2.7M
Woodline Partners LP Hedge fund	+47K +11.8%	442K	$5.8M
Boothbay Fund Management, LLC Hedge fund	+46K +286.9%	62K	$816,946
Adage Capital Partners Gp, L.L.C. Hedge fund	+25K +18.0%	164K	$2.2M
Bank Of Montreal	+11K New position	11K	$149,642
Morgan Stanley	+7,559 New position	7,559	$99,476
683 Capital Management, LLC Hedge fund	+2,150 +2.3%	95K	$1.3M
Caitong International Asset Management Co., Ltd	+3 New position	3	$39

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Woodline Partners LP Hedge fund	+47K +11.8%	442K	$5.8M
Boothbay Fund Management, LLC Hedge fund	+46K +286.9%	62K	$816,946
Adage Capital Partners Gp, L.L.C. Hedge fund	+25K +18.0%	164K	$2.2M
683 Capital Management, LLC Hedge fund	+2,150 +2.3%	95K	$1.3M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Great Point Partners LLC	−285K −76.8%	86K	$1.1M
Empery Asset Management, LP	−60K Sold out	0	—
Heights Capital Management, Inc	−51K Sold out	0	—
Millennium Management LLC Hedge fund	−22K −28.1%	56K	$737,552
ADAR1 Capital Management, LLC Hedge fund	−2,500 −2.6%	93K	$1.2M
UBS Group AG	−609 −46.8%	691	$9,093
Royal Bank Of Canada	−50 −18.7%	218	$3,000
Steward Partners Investment Advisory, LLC	−6 −6.0%	94	$1,237

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−22K −28.1%	56K	$737,552
ADAR1 Capital Management, LLC Hedge fund	−2,500 −2.6%	93K	$1.2M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Ameriprise Financial Inc	186K	$2.4M
Bank Of Montreal	11K	$149,642
Morgan Stanley	7,559	$99,476
Caitong International Asset Management Co., Ltd	3	$39

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Empery Asset Management, LP	60K	$766,483
Heights Capital Management, Inc	51K	$643,382

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 27
Ten largest holders: 87.9%
Index fund managers: 0.0%
Active managers and hedge funds: 38.2%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	4	2	0	0	+95K	+4.1%
Index fund managers	0	0	0	0	0	—
Other institutions	6	6	4	2	+164K	+6.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Promis Neurosciences.

Only managers that filed a holdings report for both quarters are compared (28 here). 2 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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