The Sharpe Ratio Explained: Formula, Uses, and Traps
Sharpe ratio, made simple: the formula, a worked example, long-run values for stocks, bonds, and Berkshire, and the traps that make it lie.
investing basics
ADRs Explained: How to Own TSMC, Alibaba, and Toyota
American Depositary Receipts let U.S. investors buy foreign stocks in dollars on U.S. exchanges. How they work, in plain English.
Options Greeks Explained: Delta, Gamma, Theta, Vega, Rho
Delta, gamma, theta, vega, and rho decoded: what each Greek measures, how they move an option’s price, and the mistakes that quietly cost traders money.
Bollinger Bands Explained: Formula, Squeeze, Mistakes
Bollinger Bands explained plainly: the formula, John Bollinger’s own rules, the squeeze setup, and the mistakes that fool retail traders.
MACD Explained: Formula, Signals, and Common Pitfalls
MACD explained plainly: the formula, the three signals traders watch, a worked example, and where the indicator quietly misleads you.
Fed Dot Plot Explained: How to Read the SEP
The Fed dot plot shows where 19 policymakers think interest rates should go. Here is how to read it, what it does not say, and what the June 2026 dots signal.
Sequence of Returns Risk: Why Order Matters in Retirement
Two retirees with the same average return can end wealthy or broke — because withdrawals turn the ORDER of returns into the decisive risk. Here’s why.
How IPOs Really Work: S-1, Pricing, Greenshoe, Lockup
From S-1 to greenshoe to the 180-day lockup — a plain-English guide to how a company actually goes public in the U.S., with Ritter’s 1980-2025 data.
What Wall Street’s Buy, Hold, Sell Ratings Actually Mean
Buy/Hold/Sell scales aren’t standardized. Here’s how sell-side analysts build ratings, derive price targets, and why the consensus beats any one call.
CPI vs Core CPI vs PCE: How the Fed’s Inflation Gauges Differ
Why the Fed targets PCE inflation at 2%, how CPI and PCE differ in formula, scope, and weights, and what June 2026’s readings actually show.