Ibio, Inc.: which funds bought and sold

Institutions that bought and sold Ibio 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, 37 institutions that filed 13F reports for both quarters added to or opened positions in Ibio, and 21 cut or closed them. Together they added a net 15.3M shares, +78.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 6.7M shares (+79.0%); index fund managers were net buyers of 1.4M shares (+66.9%). 15 opened a new position and 12 sold out entirely.

Bought, Q2 2026 37 institutions, 15 of them new holders Sold, Q2 2026 21 institutions, 12 of them sold out

Net change, all compared +15.3M shares (+78.8%)

Net change, active managers +6.7M shares (+79.0%), 11 bought, 4 sold

Buyers versus sellers

institutions compared, 66

37 bought 8 21 sold

Active managers and hedge funds 11 bought · 4 sold · +6.7M

Index fund managers 6 bought · 1 sold · +1.4M

Other institutions 20 bought · 16 sold · +7.2M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Cormorant Asset Management, LP Hedge fund	+3.6M New position	3.6M	$6.2M
Silverarc Capital Management, LLC	+3.3M +1457.7%	3.5M	$6.2M
Vestal Point Capital, LP Hedge fund	+2.6M New position	2.6M	$4.5M
Ensign Peak Advisors, Inc	+1.8M New position	1.8M	$3.2M
Woodline Partners LP Hedge fund	+1.8M New position	1.8M	$3.1M
Vanguard Capital Management LLC Index funds	+1.0M +92.8%	2.1M	$3.7M
Affinity Asset Advisors, LLC	+901K +29.0%	4.0M	$7M
Bank Of America Corp	+831K +286.2%	1.1M	$2M
Squarepoint Ops LLC Hedge fund	+499K New position	499K	$873,026
Citadel Advisors LLC Hedge fund	+428K +44.7%	1.4M	$2.4M
Ally Bridge Group (NY) LLC	+390K New position	390K	$682,757
Marshall Wace, LLP Hedge fund	+284K +45.7%	904K	$1.6M
Verdad Advisers, LP	+243K +430.8%	299K	$523,122
Renaissance Technologies LLC Hedge fund	+203K New position	203K	$354,982
Balyasny Asset Management L.P. Hedge fund	+160K +15.8%	1.2M	$2M
Geode Capital Management, LLC Index funds	+113K +29.2%	501K	$876,650
Walleye Capital LLC Hedge fund	+112K +28.8%	500K	$875,656
Blackrock, Inc. Index funds	+111K +84.4%	242K	$423,528
Millennium Management LLC Hedge fund	+102K +6.6%	1.7M	$2.9M
Atom Investors LP	+102K New position	102K	$177,725

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Cormorant Asset Management, LP Hedge fund	+3.6M New position	3.6M	$6.2M
Vestal Point Capital, LP Hedge fund	+2.6M New position	2.6M	$4.5M
Woodline Partners LP Hedge fund	+1.8M New position	1.8M	$3.1M
Squarepoint Ops LLC Hedge fund	+499K New position	499K	$873,026
Citadel Advisors LLC Hedge fund	+428K +44.7%	1.4M	$2.4M
Marshall Wace, LLP Hedge fund	+284K +45.7%	904K	$1.6M
Renaissance Technologies LLC Hedge fund	+203K New position	203K	$354,982
Balyasny Asset Management L.P. Hedge fund	+160K +15.8%	1.2M	$2M
Walleye Capital LLC Hedge fund	+112K +28.8%	500K	$875,656
Millennium Management LLC Hedge fund	+102K +6.6%	1.7M	$2.9M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Ecor1 Capital, LLC Hedge fund	−1.6M Sold out	0	—
Logos Global Management LP Hedge fund	−1.3M Sold out	0	—
Susquehanna International Group, LLP	−413K Sold out	0	—
ADAR1 Capital Management, LLC Hedge fund	−94K −20.1%	376K	$657,179
Lynx1 Capital Management LP	−68K Sold out	0	—
Morgan Stanley	−31K −100.0%	10	$18
Dafna Capital Management LLC	−24K −12.2%	170K	$297,593
Pfg Investments, LLC	−20K Sold out	0	—
Vanguard Personalized Indexing Management, LLC Index funds	−12K Sold out	0	—
Scientech Research LLC	−11K Sold out	0	—
Virtu Financial LLC	−11K Sold out	0	—
Two Sigma Investments, LP Hedge fund	−8,191 −2.0%	401K	$701,167
Xtx Topco Ltd	−4,609 −7.4%	58K	$101,224
Royal Bank Of Canada	−3,891 Sold out	0	—
UBS Group AG	−1,672 −76.9%	501	$877
Citigroup Inc	−1,373 Sold out	0	—
Fortitude Family Office, LLC	−207 −32.4%	431	$754
Osaic Holdings, Inc.	−204 −34.9%	380	$665
Hillsdale Investment Management Inc.	−32 Sold out	0	—
BNP Paribas Financial Markets	−3 −60.0%	2	$4

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Ecor1 Capital, LLC Hedge fund	−1.6M Sold out	0	—
Logos Global Management LP Hedge fund	−1.3M Sold out	0	—
ADAR1 Capital Management, LLC Hedge fund	−94K −20.1%	376K	$657,179
Two Sigma Investments, LP Hedge fund	−8,191 −2.0%	401K	$701,167

New positions

largest by value

Institution	Shares	Value June 30, 2026
Cormorant Asset Management, LPHedge fund	3.6M	$6.2M
Vestal Point Capital, LPHedge fund	2.6M	$4.5M
Ensign Peak Advisors, Inc	1.8M	$3.2M
Woodline Partners LPHedge fund	1.8M	$3.1M
Squarepoint Ops LLCHedge fund	499K	$873,026
Ally Bridge Group (NY) LLC	390K	$682,757
Renaissance Technologies LLCHedge fund	203K	$354,982
Atom Investors LP	102K	$177,725
Two Sigma Securities, LLC	16K	$28,264
Innovative Asset Advisors Group, LLC	15K	$26,250

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Ecor1 Capital, LLCHedge fund	1.6M	$3M
Logos Global Management LPHedge fund	1.3M	$2.5M
Susquehanna International Group, LLP	413K	$784,178
Lynx1 Capital Management LP	68K	$129,344
Pfg Investments, LLC	20K	$38,000
Vanguard Personalized Indexing Management, LLCIndex funds	12K	$23,142
Scientech Research LLC	11K	$21,664
Virtu Financial LLC	11K	$21,000
Royal Bank Of Canada	3,891	$7,000
Citigroup Inc	1,373	$2,609

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 55
Ten largest holders: 70.2%
Index fund managers: 9.8%
Active managers and hedge funds: 44.0%

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	4	6	2	+6.7M	+79.0%
Index fund managers	6	1	0	1	+1.4M	+66.9%
Other institutions	20	16	9	9	+7.2M	+81.4%

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 Ibio.

Only managers that filed a holdings report for both quarters are compared (66 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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