RE:Write downs If you want to know who is suceptible to write downs due to commodity price reductions look at the share price relative to NAV of P1 reserves per share. If the share price is higher or close to the NAV, the company may need to take a write down. On this basis, the two biggest candidates from my perspective are ATH and BTE. Ygr is so undervalued compared to their reserves NAV, it won't even be close to a write down.