Read More Energy Industry News Helium One (AIM: HE1) shares tumble after £3m placing as US production ramp-up looms Helium One has secured £3 million at 0.29 pence per share to support its Colorado helium development and Tanzanian licence commitments, but the heavily discounted financing has intensified questions about dilution and future funding. bySrinathOctober 15, 2026