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Micro Cap Biotechnology
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
SPRO icon
101
Spero Therapeutics
SPRO
$73.4M
$73.4M $1.26 7.35%
PMVP icon
102
PMV Pharmaceuticals
PMVP
$73.2M
$73.2M $1.37 9.27%
CING icon
103
Cingulate
CING
$72.4M
$72.4M $4.98 3.3%
TENX icon
104
Tenax Therapeutics
TENX
$71.1M
$71.1M $1.90 2.06%
PLRX icon
105
Pliant Therapeutics
PLRX
$70M
$70M $1.13 0.88%
CSBR icon
106
Champions Oncology
CSBR
$69.9M
$69.9M $5.02 5.1%
OKYO
107
OKYO Pharma
OKYO
$69.3M
$69.3M $1.32 2.22%
APLM icon
108
Apollomics
APLM
$68.2M
$68.2M $23.40 1.35%
BSEM
109
BioStem Technologies
BSEM
$68.2M
$68.2M $3.80 4.52%
CNTB
110
Connect Biopharma Holdings
CNTB
$67.4M
$67.4M $1.07 12.3%
GOSS icon
111
Gossamer Bio
GOSS
$67.2M
$67.2M $10.99 5.99%
ALPS
112
ALPS Group Inc
ALPS
$66.6M
$66.6M $0.4000 0.03%
XBIT icon
113
XBiotech
XBIT
$66.5M
$66.5M $2.18 0%
RNTX
114
Rein Therapeutics
RNTX
$66.5M
$66.5M $0.7703 3.07%
HYFT
115
MindWalk Holdings
HYFT
$65.5M
$65.5M $1.39 6.08%
ATHE
116
Alterity Therapeutics
ATHE
$64.6M
$64.6M $3.55 6.08%
INKT icon
117
MiNK Therapeutics
INKT
$63M
$63M $12.35 1.98%
BOLD
118
Boundless Bio
BOLD
$61.4M
$61.4M $2.70 6.25%
HYPD
119
Hyperion DeFi Inc
HYPD
$60.9M
$60.9M $3.92 1.75%
PDSB icon
120
PDS Biotechnology
PDSB
$59.7M
$59.7M $0.8239 9.46%
EXOZ
121
eXoZymes Inc
EXOZ
$59.2M
$59.2M $6.38 3.07%
XLO icon
122
Xilio Therapeutics
XLO
$58.8M
$58.8M $8.94 1.11%
INMB icon
123
INmune Bio
INMB
$55.5M
$55.5M $2 7.41%
LONA
124
LeonaBio Inc
LONA
$55.5M
$55.5M $5.89 2.64%
HRTX icon
125
Heron Therapeutics
HRTX
$55.2M
$55.2M $0.2910 2.68%
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5
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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 276 micro cap Biotechnology stocks — companies in the Biotechnology industry with a market cap under $250M — worth a combined $19.1B.

The largest by market cap are Sionna Therapeutics (SION) at $249M, MacroGenics (MGNX) at $242M and ProQR Therapeutics (PRQR) at $240M.

Among institutional investors, Eledon Pharmaceuticals (ELDN) drew the most net new fund positions in Q2 2026: 51 funds opened new positions, taking total fund holders up 40 (33%) quarter-over-quarter.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.