850 University
What you actually own in a stock, who is on the other side of your trade, bid and ask, market, limit and stop orders, market hours and T+1 settlement, halts and circuit breakers, indexes and why prices move, bulls, bears and compounding, and the fees and credit-first rule to know before you invest.
Learn what you really own when you buy a stock: a slice of ownership, the difference between common and preferred stock, where shareholders stand in a bankruptcy, and why your app purchase doesn't send money to the company.
Follow your order from the Buy button to the fill. Learn who brokers send orders to, what market makers and payment for order flow are, how much trading happens off-exchange, and what best execution does and doesn't promise.
Learn to read a stock quote the way the market sees it: the bid, the ask and the spread, why the last price isn't your price, and how big orders and thin stocks walk the order book.
Is Stock Market Foundations free on 850 University?
Yes — 10 of 10 lessons in this course are free with an 850ai account. Watch on YouTube anytime; create a free account to take quizzes and track progress.
How many lessons are in Stock Market Foundations?
This course includes 10 short video lessons, each followed by a quiz when you learn inside the 850ai app.
Can I dispute errors on my credit report after this course?
850 University teaches the concepts; 850ai can analyze your credit report and generate dispute letters when you are ready. Start free at my850.ai/landing.
Learn the strategy here, then let 850ai analyze your credit report and generate dispute letters tailored to your accounts.
Learn the core trade-off between market and limit orders: a certain fill at an uncertain price, or a capped price with an uncertain fill. See why opens, news and after-hours sessions change the choice.
Learn what stop, stop-limit and trailing-stop orders really do, why a gap can sell you far below your stop, and how time in force and broker rules affect your orders.
Learn when U.S. stocks trade, the risks of trading outside regular hours, the overnight session planned for December 2026, and how T+1 settlement and cash-account rules keep your trades clean.
Learn why trading in a stock can be halted, how single-stock Limit Up-Limit Down pauses and market-wide circuit breakers work, and what happens to your orders during a pause.
Learn what a market index is, how the S&P 500, Dow, Nasdaq indexes and Russell 2000 differ, why you can't buy an index directly, and the main forces that move stock prices.
Learn what corrections, bear markets and bull markets are, what the S&P 500's long-run history shows, how compounding and the Rule of 72 work, why inflation matters, and the basics of dividends and splits.
Learn how commission-free brokers make money, what small fees still apply, how fractional shares work and their limits, and why paying off high-interest debt and building an emergency fund come before investing.