StockPik Blog

A hands-on comparison of the major stock screeners for value investors — GuruFocus, Simply Wall St, Stockopedia, Finviz, TradingView, and Yahoo Finance. Covers pricing, data depth, what each tool does well, and where each falls short.

The margin of safety is the gap between a stock's intrinsic value and its market price. Benjamin Graham called it the central concept of investing. Here's the formula, how to calculate it, and how to screen for stocks with a meaningful margin of safety.

The Piotroski F-Score is one of the most useful tools in value investing — a simple 0–9 rating that separates financially improving companies from value traps. Includes an interactive calculator and links to a free screener.

The price-to-book ratio compares a stock's market price to the net assets on its balance sheet. But what counts as "good" varies widely by industry. Here's how to interpret it correctly.

Benjamin Graham developed two formulas for valuing stocks: the Graham Number and his intrinsic value formula. Here's how both work, when to use each, and how to find stocks that pass his tests.