iBio IBIO Institutional Ownership

NASDAQ IBIO

$1.18 +0.01 (+0.85%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

56 Institutions

Increased 39 69.6%

Unchanged 8 14.3%

Reduced 9 16.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

33.38%

▲+17.14 pp QoQ

Shares Held by Institutions

34.74Mn

of 104.06Mn outstanding

▲+117.08% QoQ

Shares Outstanding

104.06Mn

69.32Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+4 vs prior quarter

Net Shares Added (QoQ)

+18.74Mn

accumulated since last quarter

Value of Holdings

$40.99Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

iBio, Inc. (NASDAQ:IBIO) has 56 institutional investors with active 13F positions as of June 2026.

They owned 33.4% of outstanding stock in June 2026, up from 16.2% the prior quarter.
They increased total shares held in iBio by 117.08% from the prior quarter, while the number of investors in IBIO increased 86.67% year over year.
Activity in IBIO broke down as 39 buyers, 9 sellers, and 8 unchanged among 56 total holders.
Institutional investors collectively held 34.74Mn shares in iBio as of June 2026, up by 18.74Mn shares quarter on quarter, and up 31.54Mn shares year over year.
Affinity Asset Advisors, LLC holds the largest position in IBIO at 4.01Mn shares as of June 30, 2026, or 3.85% of shares outstanding.
The biggest buyers of iBio for the quarter ending June 2026 included Cormorant Asset Management, LP (3.57Mn), SILVERARC CAPITAL MANAGEMENT, LLC (3.29Mn), Vestal Point Capital, LP (2.6Mn), Ensign Peak Advisors, Inc (1.83Mn), Woodline Partners LP (1.78Mn).
Top sellers of IBIO stock for the quarter ending June 2026 included ADAR1 Capital Management, LLC (94.35K), Morgan Stanley (30.93K), DAFNA Capital Management LLC (23.58K), TWO SIGMA INVESTMENTS, LP (8.19K), XTX Topco Ltd (4.61K).
Per Business Quant data, the top 10 holders of iBio for the quarter ending June 2026 are Affinity Asset Advisors, LLC (4.01Mn), Cormorant Asset Management, LP (3.57Mn), SILVERARC CAPITAL MANAGEMENT, LLC (3.52Mn), Vestal Point Capital, LP (2.6Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.1Mn), Frazier Life Sciences Management, L.P. (1.95Mn), Ensign Peak Advisors, Inc (1.83Mn), Woodline Partners LP (1.78Mn), MILLENNIUM MANAGEMENT LLC (1.65Mn), CITADEL ADVISORS LLC (1.38Mn).

Form 13F Holdings

56 Institutional Holders

Report period 30 Jun, 2026

Total shares held 34.74Mn

Of outstanding 33.38%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Affinity Asset Advisors, LLC	0001773195	4,007,881	3.85%	▲900,681	+28.99%	$7.01Mn
2	Cormorant Asset Management, LP	0001583977	3,570,000	3.43%	▲3,570,000	0.00%	$6.25Mn
3	SILVERARC CAPITAL MANAGEMENT, LLC	0001816307	3,520,490	3.38%	▲3,294,490	+1,457.74%	$6.16Mn
4	Vestal Point Capital, LP	0001974915	2,600,000	2.50%	▲2,600,000	0.00%	$4.55Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,098,151	2.02%	▲1,009,852	+92.79%	$3.67Mn
6	Frazier Life Sciences Management, L.P.	0001892134	1,953,467	1.88%	0	0.00%	$3.42Mn
7	Ensign Peak Advisors, Inc	0001454984	1,832,457	1.76%	▲1,832,457	0.00%	$3.21Mn
8	Woodline Partners LP	0001784547	1,776,547	1.71%	▲1,776,547	0.00%	$3.11Mn
9	MILLENNIUM MANAGEMENT LLC	0001273087	1,651,473	1.59%	▲101,623	+6.56%	$2.89Mn
10	CITADEL ADVISORS LLC	0001423053	1,384,029	1.33%	▲427,600	+44.71%	$2.42Mn
11	BALYASNY ASSET MANAGEMENT L.P.	0001218710	1,170,893	1.13%	▲159,938	+15.82%	$2.05Mn
12	Bank Of America Corp /De/	0000070858	1,121,492	1.08%	▲831,079	+286.17%	$1.96Mn
13	Ikarian Capital, LLC	0001778253	957,062	0.92%	0	0.00%	$1.67Mn
14	Sio Capital Management, LLC	0001482416	904,268	0.87%	0	0.00%	$1.58Mn
15	MARSHALL WACE, LLP	0001318757	904,132	0.87%	▲283,530	+45.69%	$1.58Mn
16	GEODE CAPITAL MANAGEMENT, LLC	0001214717	500,816	0.48%	▲113,249	+29.22%	$876.65K
17	Walleye Capital LLC	0001758720	500,375	0.48%	▲111,821	+28.78%	$875.66K
18	Squarepoint Ops LLC	0001642575	498,872	0.48%	▲498,872	0.00%	$873.03K
19	NOESIS CAPITAL MANGEMENT CORP	0001262677	405,000	0.39%	▲93,500	+30.02%	$708.75K
20	TWO SIGMA INVESTMENTS, LP	0001179392	400,667	0.39%	▼8,191	-2.00%	$701.17K

Showing 1 to 20 of 56 holders