With U.S. government operations back online and capital activity accelerating, several undervalued microcap stocks are drawing renewed investor attention across cybersecurity, AI infrastructure, critical minerals, and climate technology. Four names — Signal Advance (OTC: SIGL), 1606 Corp. (OTC: CBDW), Power Metallic (TSXV: PNPN / OTCQB: PNPNF), and Karbon-X Corp. (OTCQX: KARX) — stand out for strong catalysts and sector momentum. See Bonus Stocks Below.
Karbon-X Corp. (OTCQX: KARX) is strengthening its climate-impact portfolio with the new phase of its REDD+ Sur del Meta Project in Colombia, protecting 40,637 hectares of forest while supporting nearly 1,000 local families. Developed through ALLCOT — A Karbon-X Company, the initiative helps communities shift from deforestation and cattle ranching toward climate-smart cacao, coffee, and citrus production. The latest phase expands carbon and biodiversity monitoring, adds new wildlife camera traps, and establishes community-led governance groups to guide long-term benefits. Verified under global standards, the project is expected to avoid more than 3.7 million tonnes of CO₂e, reinforcing KARX’s role in delivering high-impact, community-driven climate solutions. See News Release.
Signal Advance (OTC: SIGL) continues to advance Analog Guard®, its physics-based encryption platform engineered to withstand AI-driven and future quantum-computing cyberattacks. Unlike mathematical encryption, it deploys continuously shifting analog waveforms, making it inherently AI-resistant and quantum-safe. With global cybercrime expected to exceed $19.7 trillion by 2030, SIGL is positioning as a first-mover in physics-layer cybersecurity across defense, infrastructure, finance, and telecom markets. See News Release.
1606 Corp. (OTC: CBDW) surged after signing a Term Sheet to be acquired by Sim Agro Inc., a global power-infrastructure developer. The deal will create a public platform focused on captive energy for AI datacenters, a high-growth sector as AI workloads strain global power grids. After closing, Sim Agro will trade under the CBDW ticker and pursue AI-optimized microgrids, hybrid systems, and datacenter-ready energy assets. See News Release.
Power Metallic (TSXV: PNPN / OTCQB: PNPNF) is emerging as a diversified critical-minerals opportunity with exposure to nickel, copper, cobalt, PGMs, rare earths, gold, and silver at its high-grade Nisk Project in Quebec. With U.S. government processes restored, the company is once again positioned to advance its long-discussed NYSE uplist, a move expected to expand U.S. institutional visibility and liquidity. PNPN/PNPNF offers leverage to growing demand for EV batteries, grid storage, and AI datacenter metals. See News Release.
3 Active Stocks Under $1Beyond sector-driven opportunities, several low-priced NASDAQ stocks are showing strong early-session activity today. Autozi Internet Technology (NASDAQ: AZI), Cheer Holding Inc (NASDAQ: CHR), and Aspire Biopharma Inc (NASDAQ: ASBP) are all trading actively under the $1 mark, capturing attention from momentum traders scanning for volume breakouts and volatility-driven opportunities.
Bottom Line SIGL, CBDW, PNPN, and KARX represent four undervalued microcaps with significant catalysts in cybersecurity, AI energy infrastructure, critical minerals, and carbon markets, while AZI, CHR, and ASBP highlight early-session action in the active under-$1 category.
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