Graphene stocks
Haydale plc (AIM: HAYD) announced plans on September 30, 2026, to commercially roll out its graphene--enhanced Super--Efficient Thermal Transfer Fluid (SETTF) across data centers. The proprietary additive improves the thermal conductivity of conventional glycol--based coolants by approximately 28%, matching the thermal performance of pure water while resolving historical particle--thickening challenges. Haydale has entered commercial agreements with DC Cooling Solutions and Levidian Nanosystems to accelerate market entry and confirmed advanced commercial discussions with operators to deploy the fluid across roughly 200 MW of compute capacity.