Investing Education: Plain-English Guides for Independent Investors
Every guide in this section is written to answer a real investing question in plain English — no jargon, no vague advice, no content that could have been written without actually understanding the topic. Each guide includes verified perspectives from respected academics and practitioners, and connects to the AlphaLens research frameworks that put the concepts into practice.
Start Here
New here? These five guides are the core research process, in order. The two case studies show that process run against a live company.
How to Start Investing in Stocks
The complete beginner's path — from opening an account to your first research-backed position.
Read the guide →How to Pick Stocks for Beginners
A step-by-step research process — the same approach professional analysts use before investing.
Read the guide →How to Research a Stock Before Buying
The structured sequence that separates real research from reading headlines.
Read the guide →How to Analyze a Stock
Business, moat, valuation, earnings, management, risk — the full analysis sequence.
Read the guide →Stock Research Checklist
The checklist version of the process — print it, follow it, don't skip steps.
Read the guide →Case Study: SanDisk (SNDK)
A 2025 spinoff with almost no history — a genuine stress test for live-data research.
Read the case study →Case Study: SpaceX Post-IPO
The largest IPO in history — what structured research does with a stock that barely exists yet.
Read the case study →Keep Exploring
The 15 Research Frameworks
Every guide here feeds one of the 15 AlphaLens frameworks. See the full set and what each one answers.
Browse all frameworks →Free Investing Calculators
Margin of safety, position size, implied growth, dilution — 10 tools that do the arithmetic behind the guides.
Open the calculators →Investing Glossary
Plain-English definitions for every term used across the guides and frameworks.
Browse the glossary →Getting Started
How to Start Investing in Stocks in 2026
The complete beginner's path — from opening an account to your first research-backed position.
Read the guide →How to Pick Stocks for Beginners
A step-by-step research process — the same approach professional analysts use before investing.
Read the guide →How to Research a Stock Before Buying
The structured sequence that separates real research from reading headlines.
Read the guide →Best Stocks for Beginners
Not a list — a framework for thinking about what makes a stock appropriate for your first investment.
Read the guide →How to Invest with Little Money
Starting small is better than not starting. Here's the right sequence.
Read the guide →How Much Should I Invest?
A practical framework for deciding how much to put into stocks and when.
Read the guide →Account Types 101: Which Should You Open First?
Taxable brokerage, Roth IRA, Traditional IRA, 401(k), 529 — the decision tree, in order.
Read the guide →Stock Research Checklist
The step-by-step checklist version of the research process — print it, follow it, don't skip steps.
Read the guide →Research Journal & Thesis Template
Turn the checklist into a written thesis — fill it in, save it by ticker, and come back later to see if you were right.
Read the guide →Learning Paths
Guided sequences through the guides and glossary, matched to where you are as an investor.
Read the guide →Which Framework, When?
15 AlphaLens frameworks, one obvious question each — find yours and run only what you need.
Read the guide →Core Concepts
What Is Behavioral Finance?
The psychological biases that quietly sabotage investment decisions.
Read the guide →What Is Supply and Demand in Stocks?
The basic force behind every price move, dressed up in market jargon.
Read the guide →What Is the Efficient Market Hypothesis?
The theory that prices reflect all known information — and its real-world limits.
Read the guide →How Does the Stock Market Work?
How prices are set, what moves them, and what the market is actually measuring.
Read the guide →What Is Compound Interest?
The most powerful force in long-term investing — and why time matters more than amount.
Read the guide →What Is Risk Tolerance?
How to assess your real risk tolerance before a market drop forces the question.
Read the guide →What Is Asset Allocation?
The most important investment decision most people make — and how to get it right.
Read the guide →What Is Diversification?
What it protects against, what it can't protect against, and how to do it properly.
Read the guide →Is Now a Good Time to Invest?
Why this is usually the wrong question — and what to ask instead.
Read the guide →Valuation & Analysis
How to Score and Compare Competitive Moats
A structured way to rank moat strength across companies instead of relying on gut feel.
Read the guide →What Is a Catalyst in Investing?
The specific events that can move a stock — and how to track them before they happen.
Read the guide →What Is a Competitive Advantage?
The five sources of durable edge that let a company outearn its rivals for years.
Read the guide →What Is Capital Allocation?
How management decides where every dollar of profit goes — and why it matters more than the product.
Read the guide →What Is Intrinsic Value?
The gap between price and worth — and the different ways to estimate it.
Read the guide →How to Value a Stock
Three-scenario valuation, margin of safety, and why one number is never enough.
Read the guide →How to Analyze a Stock
The complete analysis sequence — business, moat, valuation, earnings, management, risk.
Read the guide →What Is a P/E Ratio?
The most widely used valuation metric — and the most misused. Here's how to use it properly.
Read the guide →What Is a Moat?
The five sources of durable competitive advantage and how to evaluate them.
Read the guide →What Is Margin of Safety?
Benjamin Graham's core concept — buying with enough cushion to survive being wrong.
Read the guide →What Is Earnings Quality?
Why reported profits can be misleading — and how to check if they're real.
Read the guide →What Is Free Cash Flow?
The number that's harder to fake than earnings — and why Buffett prioritizes it.
Read the guide →What Is EBITDA?
What it measures, why it's widely used, and when it significantly misleads.
Read the guide →What Is Book Value?
When it matters, when it doesn't, and how to use price-to-book correctly.
Read the guide →What Is ROI?
Return on investment — and the annualized version that actually enables comparison.
Read the guide →Research Skills
How to Evaluate Management
Track record, capital allocation, and the tells that separate great operators from good talkers.
Read the guide →How to Read a Cash Flow Statement
Where the real cash moves — and why it's harder to fake than the income statement.
Read the guide →What Is a 10-K Annual Report?
The most detailed disclosure a public company files — and where to focus first.
Read the guide →What Is a Proxy Statement?
The filing that reveals executive pay, board elections, and shareholder votes.
Read the guide →What Is Financial Modeling?
Building a spreadsheet forecast of a company's future — and where most models go wrong.
Read the guide →What Is Technical Analysis?
Reading price and volume patterns — and where it fits alongside fundamentals.
Read the guide →How to Read an Earnings Report
What actually matters beyond the EPS headline — and where the real information lives.
Read the guide →How to Read a Stock Chart
Trends, support, resistance, and how to use technicals as a secondary tool.
Read the guide →How to Read SEC Filings
10-K and 10-Q — where the real disclosures are and what most investors miss.
Read the guide →How to Use Stock Screeners
What screeners can and can't tell you — and how to use them as a starting point.
Read the guide →How to Build a Stock Portfolio
Position sizing, concentration, correlation — the construction decisions that matter most.
Read the guide →Investment Vehicles & Strategies
How to Invest in Dividend Stocks
What makes a dividend sustainable — and the yield-chasing mistake that traps most beginners.
Read the guide →How to Invest in Growth Stocks
Evaluating companies priced for the future, not the present — and knowing when growth is real.
Read the guide →How to Invest in International Stocks
Currency risk, access options, and what changes when you invest outside the US.
Read the guide →How to Invest in Value Stocks
Finding cheap stocks that are actually cheap — not just beaten down for good reason.
Read the guide →What Is a Convertible Bond?
A hybrid security that pairs bond-like safety with equity upside — and its trade-offs.
Read the guide →What Is Activist Investing?
How activist investors push for change — and what it signals when one takes a stake.
Read the guide →What Is a Futures Contract?
How futures work, who uses them, and the leverage that makes them high-risk.
Read the guide →What Is a Hedge Fund?
How hedge funds differ from mutual funds — and the strategies only accredited investors can access.
Read the guide →What Is a Leveraged Buyout (LBO)?
How debt-funded acquisitions work — and why they carry more risk than they first appear.
Read the guide →What Is a REIT?
How real estate investment trusts work, and why they're required to pay out most of their income.
Read the guide →What Is a Special Situation?
Investing around a specific corporate event rather than ordinary business performance.
Read the guide →What Is ESG Investing?
How environmental, social, and governance factors get folded into investment decisions.
Read the guide →What Is Private Equity?
How private equity firms buy, operate, and exit companies outside public markets.
Read the guide →Individual Stocks vs Index Funds
When each approach makes sense — and the middle path most investors use.
Read the guide →What Is an ETF?
How exchange-traded funds work, their advantages, and when to use them.
Read the guide →What Is a Mutual Fund?
How they work, active vs passive, and how they compare to ETFs.
Read the guide →What Is Passive Investing?
The evidence for index funds — and their real limitations.
Read the guide →Growth Stocks vs Value Stocks
The difference, the historical record, and why the best investors blend both.
Read the guide →What Is Dollar-Cost Averaging?
How it works, when it helps, and when lump-sum beats it.
Read the guide →Can You Time the Stock Market?
What the research actually shows — and what to do instead.
Read the guide →Stocks vs Bonds
How they differ in risk and return — and how to think about the right mix.
Read the guide →What Is an Index Fund?
Index funds for beginners — how they work, why they're so cheap, and how they differ from ETFs.
Read the guide →Key Metrics Explained
What Is a Credit Rating?
How agencies grade a company's ability to repay debt, and why it moves borrowing costs.
Read the guide →What Is a Dividend Aristocrat?
The 25-year streak that separates dividend aristocrats from ordinary dividend payers.
Read the guide →What Is a Growth Stock?
What separates a true growth stock from a stock that's simply gone up.
Read the guide →What Is an IPO?
How a company goes public, why IPO stocks are volatile, and what the lockup period means.
Read the guide →What Is a Secondary Offering?
When a company sells more shares after its IPO — and what it means for existing holders.
Read the guide →What Is a Spin-Off?
Why companies split themselves apart — and how to evaluate the new shares you receive.
Read the guide →What Is a Stock Buyback?
How repurchases affect earnings per share — and when they're a good use of cash.
Read the guide →What Is a Stock Market Index?
How indexes like the S&P 500 are built, weighted, and used to track the market.
Read the guide →What Is a Stock Option?
The right to buy or sell at a set price — and the basics before you trade one.
Read the guide →What Is a Turnaround Stock?
Spotting a genuine recovery story before the market prices it in.
Read the guide →What Is Debt-to-Equity Ratio?
How much a company leans on debt versus its own capital — and what's normal by industry.
Read the guide →What Is Enterprise Value?
The truer measure of what it would cost to buy a whole company, debt included.
Read the guide →What Is Goodwill in Accounting?
The premium paid in an acquisition — and the impairment risk it carries later.
Read the guide →What Is Gross Margin?
What's left after production costs — and why it reveals pricing power.
Read the guide →What Is Net Income?
The bottom line after every expense — and why it's not the same as cash in the bank.
Read the guide →What Is Operating Leverage?
Why some companies see profits swing far more than revenue does.
Read the guide →What Is Price-to-Sales Ratio?
A valuation shortcut for companies that don't have earnings yet.
Read the guide →What Is Return on Equity?
How efficiently a company turns shareholder capital into profit.
Read the guide →What Is Revenue?
The top line before any costs are subtracted — and why growth alone doesn't tell the story.
Read the guide →What Is Working Capital?
The short-term liquidity measure that shows if a company can fund its own operations.
Read the guide →What Is a Dividend?
How dividends work, what makes them sustainable, and the yield trap to avoid.
Read the guide →What Is Market Capitalization?
Large cap vs small cap — what the categories mean for investors.
Read the guide →What Is Volatility?
What drives it, how to measure it, and when it's opportunity rather than threat.
Read the guide →What Is a Balance Sheet?
How to read one as an investor and what the key numbers reveal.
Read the guide →Risk & Protection
How to Think About Position Sizing
What percentage of your portfolio a single stock should occupy — and why conviction matters.
Read the guide →What Is a Value Trap?
Why a cheap-looking stock can keep getting cheaper — and how to tell the difference.
Read the guide →What Is Currency Risk in Stocks?
How exchange rates affect returns on international holdings — even when the stock itself does fine.
Read the guide →What Is Interest Rate Risk?
How rate changes ripple through bond prices and rate-sensitive stocks.
Read the guide →How to Avoid Losing Money in Stocks
The predictable causes of permanent capital loss — and how to avoid them.
Read the guide →What Is Short Selling?
How it works, the risks, and what short interest data tells regular investors.
Read the guide →What Is Insider Trading?
Legal vs illegal — and why executives' own stock purchases are worth watching.
Read the guide →What Is the Safest Investment?
The tradeoffs between safety and return — and the inflation risk most people ignore.
Read the guide →Personal Finance Foundations
What Is Portfolio Rebalancing?
Keeping your allocation on target as markets drift it out of shape.
Read the guide →What Is Tax-Loss Harvesting?
Turning a losing position into a tax break without abandoning your strategy.
Read the guide →Should I Invest or Pay Off Debt First?
A clear decision framework based on interest rates — with the one exception that changes everything.
Read the guide →401(k) vs Roth IRA
Key differences, when each wins, and the optimal contribution sequence for most investors.
Read the guide →How to Handle a Market Crash
What the research shows about staying invested — and the costly mistakes most investors make.
Read the guide →Target-Date Funds vs Building Your Own Portfolio
Simple vs custom — how to decide which approach fits your situation.
Read the guide →Best Brokerage Accounts for Beginners
What actually differentiates brokerages — and how to pick the right one.
Read the guide →Model Portfolios: Sample Allocations by Age
Concrete templates — conservative, moderate, aggressive — not just a definition.
Read the guide →Investment Fees and Costs Explained
What you're actually paying — and why 1% compounds into tens of thousands.
Read the guide →Roth IRA for Beginners
How it works, who qualifies, 2026 limits, and when it beats a Traditional IRA or 401(k).
Read the guide →Markets, Economy & Strategy
What Is a Bear Market?
The official threshold, what triggers one, and how long they typically last.
Read the guide →What Is a Bull Market?
What defines one, how they end, and why they last longer than most investors expect.
Read the guide →What Is a Stock Market Bubble?
The pattern behind every bubble in market history, and how to recognize one forming.
Read the guide →What Is a Stock Market Correction?
The 10% threshold that defines a correction — and why they're a normal part of investing.
Read the guide →What Is Quantitative Easing?
How central banks inject money into the economy — and what it means for stocks.
Read the guide →What Is Sector Rotation?
Shifting allocations between industries as the economic cycle turns.
Read the guide →What Is the Federal Reserve?
How Fed policy moves interest rates — and why markets hang on every meeting.
Read the guide →What Is the Yield Curve?
Why an inverted yield curve gets so much attention from economists and investors alike.
Read the guide →What Is Inflation and How Does It Affect Stocks?
Why inflation helps some companies and destroys others — and how to tell which is which.
Read the guide →What Is a Recession and How Should You Invest?
What causes them, how they affect different stocks, and what to do when one hits.
Read the guide →How Long-Term Investing Works
The evidence for patience — and the specific behaviors that separate successful investors.
Read the guide →How to Invest in Index Funds
Step-by-step from opening an account to your first automatic investment.
Read the guide →What Is Options Trading?
How options work, the risks involved, and whether they belong in your portfolio.
Read the guide →Case Studies
Case Study: SanDisk and the Frozen-Data Problem
Why a 2025 spinoff makes this stock a genuine stress test for AI-based research — and what a live-data process actually finds.
Read the case study →Case Study: Moderna and the 48-Hour-Old Model
A single trading session rewrote the investment thesis — why a frozen knowledge cutoff fails fast-moving catalyst stocks.
Read the case study →Case Study: SpaceX and the Stock That Didn't Exist Yet
The largest IPO in history means a frozen model won't just be outdated on this stock — it will say the stock doesn't exist.
Read the case study →Case Study: FDXF and the Spin-Off a Frozen Model Can't See
FedEx Freight became its own S&P 500 company in June 2026 — new debt, a new peer set, a retained-stake overhang. A pre-spin model still answers as if it's a FedEx segment.
Read the case study →Put the research into practice
AlphaLens runs 15 structured frameworks on any US stock — the same analytical process described across these guides, powered by Advanced AI with live data.
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