The 10-15-30 Portfolio

You don't have a stock-picking problem. You have a system problem.

Many intelligent, successful people underperform in the market for one central reason: they have no structure telling them what to buy, when to buy, and most critically, when to sell. They buy on headlines, hold on hope, and sell in panic.

The 10-15-30 Portfolio fixes that.

Written by Prof. Tchai Tavor, a professor of empirical finance and behavioral economics with more than 70 peer-reviewed publications and over 15 years as an active investor, this book delivers the exact system he built to manage his own capital through calm markets and violent storms alike.

This is not a collection of stock tips or market predictions. It is a complete, rules-based framework with precise, executable numbers.

What you will learn:

• The AGS Pyramid: how to divide your capital into three layers (Anchor, Growth, and Sniper) so stability, growth, and speculation each play their role without sinking the whole portfolio.
• The stop-loss discipline: exact trailing-stop percentages for every type of stock, and how to tighten them automatically when markets turn.
• When to sell: the single hardest decision in investing, reduced to a clear mechanical rule that executes before emotion can talk you out of it.
• Entry timing: how to buy when the odds favor you, and how to avoid the traps that punish retail investors.
• A 90-day action plan: a step-by-step path from reading to running a live portfolio in 15 to 30 minutes a day.

Whether you are protecting a growing nest egg or trying to finally beat the index you keep losing to, this book gives you the structure to stop guessing and start managing.

Stop reacting to the market. Start running a system.