Standard Deviation in Finance: Volatility Explained
Standard deviation measures the dispersion of investment returns, quantifying how much a stock or portfolios performance...
Master portfolio management and risk analysis with articles written by Ryan O'Connell, CFA, FRM
Learn how to measure and quantify investment risk using industry-standard metrics.
Standard deviation measures the dispersion of investment returns, quantifying how much a stock or portfolios performance...
Beta is one of the most important risk metrics in finance. Whether you’re evaluating a single stock, building a di...
Correlation and covariance quantify how two assets move relative to each other, forming the foundation of portfolio dive...
Understand how assets are priced and the relationship between risk and expected return.
The Capital Asset Pricing Model describes the relationship between systematic risk and expected return, providing a fram...
Beta is one of the most important risk metrics in finance. Whether you’re evaluating a single stock, building a di...
The Fama-French three-factor model extends CAPM by adding size (SMB) and value (HML) factors, explaining roughly 90% of ...
Build and manage diversified portfolios using modern portfolio theory.
Learn how portfolio diversification reduces risk, the diversification ratio formula, and practical strategies for buildi...
Learn what the efficient frontier is, how Markowitz mean-variance optimization works, and how to identify optimal portfo...
Learn how Monte Carlo simulation generates probability distributions of portfolio outcomes for retirement planning, risk...
Evaluate investment performance using risk-adjusted return measures.
The Sharpe ratio measures risk-adjusted return per unit of total volatility, making it the most widely used performance ...
The Treynor ratio measures risk-adjusted portfolio performance by dividing excess return by beta, making it the standard...
Jensen's Alpha measures a portfolio's risk-adjusted performance by comparing its actual return to the return predicted b...
Value stocks using discounted cash flow, multiples, and fundamental analysis.
Intrinsic value is the estimated true worth of a stock based on fundamental analysis. Learn how to calculate intrinsic v...
Fundamental analysis is the systematic process of evaluating a stock\x27s intrinsic value by examining financial stateme...
Discounted cash flow analysis is the gold standard of intrinsic valuation in finance. Rather than relying on what the ma...
Analyze company profitability, efficiency, and financial health using key ratios.
Return on equity is the single most important profitability metric for equity investors. It measures how much profit a c...
Return on assets (ROA) measures how efficiently a company converts its total asset base into profit. This guide covers t...
Return on invested capital (ROIC) measures how much after-tax operating profit a company generates relative to the total...
Evaluate investment projects, cost of capital, and real estate financing decisions.
The weighted average cost of capital (WACC) is the blended cost of equity and after-tax debt that serves as the hurdle r...
Net present value (NPV) and internal rate of return (IRR) are the two most widely used capital budgeting tools. Learn th...
Learn what the payback period and discounted payback period measure, how to calculate them, and how they compare to NPV ...
Master option mechanics, the Greeks, and pricing models.
Complete guide to call options — how they work, buying vs selling calls, payoff diagrams, and when to use call options...
Complete guide to put options — how they work, buying vs selling puts, payoff diagrams, hedging applications, and when...
Comprehensive guide to intrinsic and extrinsic option value — what drives each component, how moneyness affects the br...
Learn defined-risk and income-generating options strategies with payoff diagrams.
Complete guide to covered calls — how the strategy works, payoff diagram, max profit and loss calculations, and when t...
A cash-secured put is an income-generating options strategy where you sell a put option while holding enough cash to buy...
Complete guide to protective puts — how to hedge stock positions with put options, payoff diagram, cost analysis, and ...
Understand bond pricing, duration, convexity, and yield curve strategies.
Learn how to calculate bond prices and yield to maturity (YTM) with step-by-step formulas and examples for annual and se...
Complete guide to bond duration — Macaulay, Modified, and Effective duration formulas with worked examples, interpreta...
Bond convexity measures the curvature of the price-yield relationship, capturing what duration misses. Learn the convexi...
Learn how exchange-traded and OTC forward agreements work, including hedging applications.
A forward contract is a customized OTC agreement to buy or sell an asset at a predetermined price on a future date. Lear...
Learn how futures contracts work, including margin requirements, daily settlement, clearinghouse mechanics, and how futu...
Learn how futures prices are determined using the cost-of-carry model, why markets trade in contango or backwardation, a...
Explore swaps, exotic options, and over-the-counter derivative instruments.
Learn how interest rate swaps work including plain vanilla swap structure, swap rate formula, step-by-step pricing examp...
Learn how interest rate caps and floors provide insurance against adverse rate movements. Covers caplet and floorlet pay...
Complete guide to forward rate agreements (FRAs) — what they are, how FRA notation works, how to price an FRA from spo...
Understand credit risk measurement, CDS, and securitized products.
Complete guide to credit risk measurement — probability of default (PD), loss given default (LGD), the expected loss f...
Learn how credit default swaps work — CDS mechanics, pricing, premium and protection legs, settlement types, and real-...
Credit valuation adjustment (CVA) is the market price of counterparty credit risk — a risk-neutral pricing adjustment ...
Compare investing philosophies and approaches from value investing to momentum.
Comprehensive comparison of active vs passive investing strategies. Covers SPIVA performance data, fee impact analysis, ...
Growth vs value investing is one of the oldest debates in finance. This guide explains the differences between growth an...
Value investing is the discipline of buying stocks below their intrinsic value with a margin of safety. Learn Benjamin G...
Understand ETFs, mutual funds, hedge funds, and other investment structures.
Exchange-traded funds (ETFs) combine mutual fund diversification with intraday stock trading. Learn how the creation/red...
Mutual funds pool money from many investors into diversified portfolios of stocks, bonds, or other securities. Learn how...
Learn what index funds are, how they work, and why passive investing outperforms most active strategies. Covers SPIVA ev...
Understand GDP, inflation, unemployment, monetary policy, and how macroeconomic forces shape financial markets.
Supply and demand is the foundational economic model explaining how prices are set, how markets reach equilibrium, and w...
Learn how price elasticity of demand measures consumer responsiveness to price changes, including the midpoint method, d...
Learn what price ceilings and price floors are, when they are binding, and their real-world effects — from rent contro...
Explore how firms, consumers, and markets interact — from cost curves and competition to game theory and income inequality.
Learn the costs of production in economics — fixed costs, variable costs, marginal cost, average total cost, economies...
Learn how firms in perfectly competitive markets maximize profit using MC = MR, when to shut down or exit, why long-run ...
A monopoly in economics exists when a single firm is the sole seller with no close substitutes. Learn how monopolists se...
Learn how market structure, global factors, and trading mechanics affect investments.
Market capitalization measures a company's total equity value by multiplying its stock price by shares outstanding. Lear...
A stock market index tracks the performance of a group of stocks, serving as a benchmark for portfolio evaluation, the b...
The efficient market hypothesis (EMH) states that stock prices reflect all available information, making it impossible t...