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Buy Day today: Neutral (52) Mixed market breadth · no major macro event
IBIO

iBio, Inc.

Healthcare · Biotechnology

0.7317$ -4.0% vs. previous close Closing price · As of: Nov 13, 2026

Ownership

Ownership Structure

Who owns iBio, Inc. (IBIO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 71.7% of the shares are freely tradable; institutional investors hold 49.4%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 49.4%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 1.7%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 71.7%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 6.3%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 71Mio.

Largest Shareholders

Institutions

Institutions IBIO
Name Stake (%) Shares Change (%) Date
Affinity Asset Advisors, LLC 6.23 4,007,881 +29.0 06/30/2026
Cormorant Asset Management, LLC 5.55 3,570,000 +0.0 06/30/2026
SILVERARC CAPITAL MANAGEMENT, LLC 5.47 3,520,490 +1,457.7 06/30/2026
Vestal Point Capital LP 4.04 2,600,000 +0.0 06/30/2026
Vanguard Capital Management, LLC 3.26 2,098,151 +92.8 06/30/2026
Frazier Life Sciences Management, L.P. 3.04 1,953,467 +0.0 06/30/2026
Ensign Peak Advisors Inc 2.85 1,832,457 +0.0 06/30/2026
Woodline Partners LP 2.76 1,776,547 +0.0 06/30/2026
Millennium Management LLC 2.57 1,651,473 +6.6 06/30/2026

Funds

Funds IBIO
Name Stake (%) Shares Change (%) Date
Vanguard MStar Total Stk Mkt Idx Invest 2.28 1,465,833 +0.0 09/30/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Data as of: November 13, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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