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Micro Cap Biotechnology
Stocks Ranked by
Market Capitalization

Micro Cap Biotechnology Stocks at a Glance

Biotechnology companies research and develop novel drugs and therapies, often with no products yet on the market. Clinical-trial readouts and regulatory decisions drive binary stock moves, making pipeline breadth, cash runway, and partnership deals the key variables.

There are 273 micro cap Biotechnology stocks — companies in the Biotechnology industry with a market cap under $250M — worth a combined $18.3B.

The largest by market cap are Greenwich LifeSciences (GLSI) at $248M, Adagene (ADAG) at $248M and Capricor Therapeutics (CAPR) at $243M.

Among institutional investors, Atrium Therapeutics (RNA) drew the most net new fund positions in Q1 2026: 162 funds opened new positions.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q1 2026.