A 'net-net' trades below its net current assets (current assets minus all liabilities) — Graham's deepest-value screen, implying you pay less than the liquidation value of the working capital alone.
Price-to-book compares price against accounting equity; a low P/B can signal value or a broken business, so pair it with profitability and debt checks.
These screens surface candidates, not conclusions — the work is separating cheap-and-sound from cheap-and-dying.
Try it: DeepValueRadar on net net book value.