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Market Intelligence › Basic Terminologies
The relationship between conviction and size, and why it needs an upper limit
Published by The Retail Trader · JUL 26, 2026 · Risk Management
Big returns often come from concentrated portfolios, and so do big losses. The question is not whether concentration is good or bad — the question is its upper limit.
A position that is a large part of the portfolio makes your return and also decides your outcome. Its being wrong can outweigh everything else being right.
Conviction is a feeling, and a feeling has no position limit. That is why the limit has to be imposed from outside; it does not arise from within.
A practical framework is this:
• Write down the maximum percentage for a single name beforehand, before taking the position.
• That limit does not rise on its own when the price rises — trimming the winner is part of it.
• Count your employer's stock and ESOPs within the same limit.
• Ask: if this name halves tomorrow, how much will the portfolio fall.
The most dangerous concentration is the one that builds up slowly — a good stock keeps rising and one day it is half the portfolio. By then it is no longer a decision, it has become a habit.
This article is educational only — it is not a buy or sell recommendation, it makes no claim of guaranteed returns, and it is not advice. Rules, rates and mechanics are changed from time to time by the exchanges, SEBI and RBI, so verify every number yourself with your broker or an official source.