Immuneering Corp: which funds bought and sold

Institutions that bought and sold Immuneering 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, 73 institutions that filed 13F reports for both quarters added to or opened positions in Immuneering, and 41 cut or closed them. Together they added a net 5.2M shares, +17.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 1.9M shares (−11.3%); index fund managers were net buyers of 5.2M shares (+101.3%). 38 opened a new position and 20 sold out entirely.

Bought, Q2 2026 73 institutions, 38 of them new holders Sold, Q2 2026 41 institutions, 20 of them sold out

Net change, all compared +5.2M shares (+17.9%)

Net change, active managers −1.9M shares (−11.3%), 11 bought, 11 sold

Buyers versus sellers

institutions compared, 132

73 bought 18 41 sold

Active managers and hedge funds 11 bought · 11 sold · −1.9M

Index fund managers 8 bought · 1 sold · +5.2M

Other institutions 54 bought · 29 sold · +1.9M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+2.9M +190.2%	4.4M	$21.8M
State Street Corp Index funds	+733K +273.2%	1.0M	$5M
Geode Capital Management, LLC Index funds	+733K +114.9%	1.4M	$6.8M
Dcf Advisers, LLC	+649K +458.5%	790K	$3.9M
Alethea Capital Management, LLC	+450K +1962.1%	473K	$2.4M
Nuveen, LLC	+438K New position	438K	$2.2M
Levin Capital Strategies, L.P. Active manager	+404K +4040.0%	414K	$2.1M
Vanguard Portfolio Management LLC Index funds	+359K New position	359K	$1.8M
Northern Trust Corp Index funds	+319K +271.4%	437K	$2.2M
Gsa Capital Partners LLP	+267K +347.3%	343K	$1.7M
D. E. Shaw & Co., Inc. Hedge fund	+204K New position	204K	$1M
Connor, Clark & Lunn Investment Management Ltd.	+201K +50.2%	601K	$3M
Permanent Capital Management, LP	+150K New position	150K	$748,500
Bank Of New York Mellon Corp	+132K New position	132K	$658,699
Charles Schwab Investment Management Inc Index funds	+131K +349.6%	168K	$837,826
Price T Rowe Associates Inc Active manager	+107K +5.8%	1.9M	$9.7M
Fisher Asset Management, LLC Active manager	+88K New position	88K	$440,781
Envestnet Asset Management Inc	+84K +384.0%	106K	$527,987
Corient Private Wealth LP	+77K New position	77K	$384,679
Summit Financial, LLC	+76K +20.0%	452K	$2.3M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Levin Capital Strategies, L.P. Active manager	+404K +4040.0%	414K	$2.1M
D. E. Shaw & Co., Inc. Hedge fund	+204K New position	204K	$1M
Price T Rowe Associates Inc Active manager	+107K +5.8%	1.9M	$9.7M
Fisher Asset Management, LLC Active manager	+88K New position	88K	$440,781
Alliancebernstein L.P. Active manager	+53K New position	53K	$277,887
Two Sigma Investments, LP Hedge fund	+44K +17.8%	288K	$1.4M
American Century Companies Inc Active manager	+25K +74.0%	60K	$297,194
Winton Group Ltd Hedge fund	+17K New position	17K	$85,828
Intech Investment Management LLC Active manager	+11K New position	11K	$53,712
Quantbot Technologies LP Hedge fund	+10K +613.8%	12K	$58,134

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Marshall Wace, LLP Hedge fund	−1.3M −63.3%	732K	$3.7M
Millennium Management LLC Hedge fund	−772K −70.0%	330K	$1.6M
Occam Crest Management LP	−267K −48.9%	278K	$1.1M
Goldman Sachs Group Inc	−231K −70.6%	96K	$480,138
Diametric Capital, LP	−175K Sold out	0	—
Squarepoint Ops LLC Hedge fund	−168K −74.5%	58K	$287,868
Wellington Management Group LLP Active manager	−156K Sold out	0	—
683 Capital Management, LLC Hedge fund	−151K Sold out	0	—
Barclays PLC	−102K −83.3%	20K	$101,586
Hudson Bay Capital Management LP Hedge fund	−96K Sold out	0	—
Prosight Management, LP	−87K −70.1%	37K	$183,936
Brevan Howard Capital Management LP Hedge fund	−86K Sold out	0	—
Jane Street Group, LLC	−77K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−73K Sold out	0	—
Morgan Stanley	−70K −23.5%	226K	$1.1M
Landscape Capital Management, L.L.C.	−67K Sold out	0	—
Citadel Advisors LLC Hedge fund	−61K −13.6%	386K	$1.9M
HRT Financial LP	−42K Sold out	0	—
HSBC Holdings PLC	−38K Sold out	0	—
Susquehanna International Group, LLP	−36K −34.6%	69K	$344,574

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Marshall Wace, LLP Hedge fund	−1.3M −63.3%	732K	$3.7M
Millennium Management LLC Hedge fund	−772K −70.0%	330K	$1.6M
Squarepoint Ops LLC Hedge fund	−168K −74.5%	58K	$287,868
Wellington Management Group LLP Active manager	−156K Sold out	0	—
683 Capital Management, LLC Hedge fund	−151K Sold out	0	—
Hudson Bay Capital Management LP Hedge fund	−96K Sold out	0	—
Brevan Howard Capital Management LP Hedge fund	−86K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−73K Sold out	0	—
Citadel Advisors LLC Hedge fund	−61K −13.6%	386K	$1.9M
Schonfeld Strategic Advisors LLC Hedge fund	−16K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Nuveen, LLC	438K	$2.2M
Vanguard Portfolio Management LLCIndex funds	359K	$1.8M
D. E. Shaw & Co., Inc.Hedge fund	204K	$1M
Permanent Capital Management, LP	150K	$748,500
Bank Of New York Mellon Corp	132K	$658,699
Fisher Asset Management, LLCActive manager	88K	$440,781
Corient Private Wealth LP	77K	$384,679
Ameriprise Financial Inc	71K	$356,555
Rhumbline AdvisersIndex funds	66K	$328,903
Alps Advisors Inc	66K	$327,633

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Diametric Capital, LP	175K	$921,707
Wellington Management Group LLPActive manager	156K	$824,355
683 Capital Management, LLCHedge fund	151K	$794,173
Hudson Bay Capital Management LPHedge fund	96K	$505,335
Brevan Howard Capital Management LPHedge fund	86K	$454,463
Jane Street Group, LLC	77K	$407,971
Renaissance Technologies LLCHedge fund	73K	$384,051
Landscape Capital Management, L.L.C.	67K	$355,699
HRT Financial LP	42K	$223,000
HSBC Holdings PLC	38K	$197,542

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 112
Ten largest holders: 74.0%
Index fund managers: 30.3%
Active managers and hedge funds: 42.7%

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	11	11	5	6	−1.9M	−11.3%
Index fund managers	8	1	2	0	+5.2M	+101.3%
Other institutions	54	29	31	14	+1.9M	+25.2%

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 Immuneering.

Only managers that filed a holdings report for both quarters are compared (132 here). 1 other holder is 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.

← Back to Immuneering Corp · Insiders · Politicians