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Micro Cap Solar
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
TOYO icon
1
TOYO Co
TOYO
$171M
$171M $4 2.91%
SPWR icon
2
SunPower Inc
SPWR
$78.8M
$78.8M $0.2460 6.36%
TYGO icon
3
Tigo Energy
TYGO
$63.3M
$63.3M $0.8246 1.4%
PN icon
4
PN Smart Energy Ltd
PN
$33.3M
$33.3M $2.25 0.9%
FTCI icon
5
FTC Solar
FTCI
$26.6M
$26.6M $1.61 3.01%
SPRU icon
6
Spruce Power Holding Corp
SPRU
$25.2M
$25.2M $1.31 10.3%
SMXT icon
7
Solarmax Technology
SMXT
$23.3M
$23.3M $4.91 4.84%
BEEM icon
8
Beam Global
BEEM
$20.2M
$20.2M $0.8928 6.94%
ASTI icon
9
Ascent Solar Technologies
ASTI
$18.2M
$18.2M $1.85 2.12%
SUNE icon
10
SUNation Energy
SUNE
$13.4M
$13.4M $2.05 5.09%
ZEO icon
11
Zeo Energy
ZEO
$11.9M
$11.9M $0.2550 5.9%
TURB icon
12
Turbo Energy
TURB
$10.9M
$10.9M $0.8704 2.11%

Micro Cap Solar Stocks at a Glance

Solar companies design, make, and install solar power systems and components. Demand rides falling equipment costs, energy policy, and utility procurement cycles, while module pricing and interest rates — which set project economics — drive the sharp swings.

There are 12 micro cap Solar stocks — companies in the Solar industry with a market cap under $250M — worth a combined $496M.

The largest by market cap are TOYO Co (TOYO) at $171M, SunPower Inc (SPWR) at $78.8M and Tigo Energy (TYGO) at $63.3M.

Among institutional investors, TOYO Co (TOYO) drew the most net new fund positions in Q2 2026: 41 funds opened new positions, taking total fund holders up 34 (243%) quarter-over-quarter.

  • Combined market cap: $496M across 12 stocks.
  • Micro Cap: market cap under $250M.
  • Largest constituent: TOYO Co (TOYO), $171M market cap.
  • Most net new fund positions in Q2 2026: TOYO Co (TOYO), +34 holders.

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