Micro-Cap Stocks: YDKG, SIGL, DTREF, SPTY, KOAN Power Next-Gen Sector GrowthThe Street spotlights five emerging micro-cap innovators reshaping their respective industries—from blockchain finance and AI cybersecurity to advanced mineral exploration, digital advertising, and regenerative biotechnology. As market interest accelerates toward companies driving innovation with measurable traction, these five companies below are capturing attention through strategic developments, leadership milestones, and breakthrough technologies that position them at the forefront of their respective sectors.