There's no single right answer in valuation, but there is a useful starting point: what the company earns per share (EPS) times the multiple the market is willing to pay (P/E). Insightr puts that calculation on every stock page. Every number can be changed, and the result sits right next to today's price.
It starts from forward EPS. Tap a common multiple, type your own, or swap in your own EPS estimate. For Taiwan stocks, EPS comes from MOPS as the sum of the latest four quarters, the same basis TWSE and TPEx use for P/E, and every figure shows its source.
Step through the last four quarters of revenue, costs, and expenses down to net income, adjust each assumption, see the result as a waterfall, and discount it back to a price today. For US stocks you can value each operating segment from the 10-K or define your own business lines.
P/E works best for companies with steady profits. For loss-making, cyclical, or transitioning businesses the number tells you much less. Defaults are reported figures, the assumptions are yours, and the result is not a price target.
