REN - Redes Energéticas Nacionais, SGPS, S.A. (ENXTLS: RENE). Last close €3.55 (as of 2026-10-21); 52-week range €3.09 to €3.95. ORTEX data as of 2026-10-19: short interest is 0% of free float, 0 days to cover and the average cost to borrow is 0.23%.