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Buy Day today: Neutral (46) Mixed market breadth · no major macro event
JBIO

Jade Biosciences, Inc.

Healthcare · Biotechnology

14.10$ -1.3% vs. previous close Closing price · As of: Oct 30, 2026

Ownership

Ownership Structure

Who owns Jade Biosciences, Inc. (JBIO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 81.7% of the shares are freely tradable; institutional investors hold 84.8%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 84.8%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 0.9%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 81.7%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 23.3%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 64Mio.

Largest Shareholders

Institutions

Institutions JBIO
Name Stake (%) Shares Change (%) Date
FMR Inc 14.35 9,126,877 +28.8 06/30/2026
Jupiter Topco LLC 9.86 6,273,262 +0.0 06/30/2026
Fairmount Funds Management LLC 7.16 4,553,494 +0.0 06/30/2026
RA Capital Management, LLC 5.77 3,671,083 +0.0 06/30/2026
VR Adviser, LLC 5.06 3,220,364 +0.0 06/30/2026
HHG PLC 4.88 3,105,669 +0.0 03/31/2026
Bellevue Group AG 4.81 3,057,996 -12.7 06/30/2026
Paradigm Biocapital Advisors LP 4.49 2,857,405 +0.0 06/30/2026
BlackRock Inc 4.41 2,801,451 +21.1 06/30/2026
Franklin Templeton Inc 4.39 2,792,080 +0.0 06/30/2026

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: October 30, 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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