Posts tagged #markets

How much you put into a trade decides whether you survive a losing streak. Here's the math behind fixed fractional sizing, the 1% rule, and half-Kelly.

Most US retail stock orders never touch an exchange. Here's how wholesalers, payment for order flow, and the NBBO decide your price, and what changed in 2026.

Fundamental analysis asks what a business is worth; technical analysis asks what price is doing. Here's how each works and why the rivalry is a category error.

Sector rotation charts promise a map of the business cycle laid over the stock market. The taxonomy and the economic logic hold up well.

The SPIVA scorecards are the most-cited evidence in the passive-versus-active debate. Here is what they actually measure, why survivorship and persistence…

The number at the top of an earnings press release is the number the company chose to put there. Here is where the actual information lives: the…

Investing a windfall all at once beats easing it in about two-thirds of the time. Here is what the research actually says, and when dollar-cost averaging…

Market, limit, and stop orders each trade off price against execution in a different way. Here is how they actually work, with a worked example.

A practical explainer on how stock options work — what calls and puts are, how they're priced, and what time decay means for buyers and sellers.