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Foundation
Master the fundamentals of stocks, markets, and how prices work.
What Is a Stock?
A plain-English guide to what a stock actually is — ownership, rights, common vs preferred (UK "ordinary" and "preference"), dividends, the bankruptcy waterfall and why prices move. Built for UK investors who want the truth, not the hype.
How Are Stock Prices Determined?
The mechanics behind every price tick on the London Stock Exchange — the marginal trade, market makers, supply and demand, and why "the price" is really a story told by the last person to trade.
How Stock Prices Move
Why share prices move every day — the gap between reality and expectation, how UK and US markets digest earnings, and why "good news" can still send a stock down.
Understanding Market Capitalisation — A Clear, Modern Guide
What market cap actually measures, how it's used to slice the FTSE 100, 250 and AIM, and where it quietly breaks down — for UK investors trying to compare a £2bn AIM growth name with a £100bn blue-chip.
Reading a Stock Quote — Price, Volume and Market Data
A step-by-step decoder of every number on a UK stock quote — ticker, bid/ask spread, day range, market cap, P/E and volume — with the GBX-versus-pence gotchas British investors hit first.
The Stock Exchange Explained — How Markets Actually Work
How the London Stock Exchange and its global peers actually work — order matching, market makers, opening and closing auctions, and the FTSE indices a UK investor will see every day.
Understanding Risk & Reward Scores
How Openbook's Risk and Reward scores are built, what they measure (and what they deliberately don't), and how to use them as a starting point rather than a final answer.