The 5-Minute Sunday Portfolio Review

The problem

Drift happens silently

Over time, winners get too big and sector allocations shift without you noticing. If you only look at your portfolio when something feels wrong, you usually find problems that have been building for weeks. A stock that was 5% of your portfolio six months ago might be 15% today just because it rallied. Worse, your careful 20% IT sector allocation might have quietly ballooned to 35% while you were not paying attention, turning a diversified portfolio into a concentrated sector bet you never intended to make. Most Indian retail investors fall into one of two traps. The first group checks their portfolio every single day, sometimes multiple times a day, reacting to every 2% swing with anxiety and making impulsive trades that hurt long-term returns. The second group goes the other way entirely, ignoring their portfolio for months or even a full year, only to discover unpleasant surprises like a stock that fell 40% after poor quarterly results they never read, or a bonus issue they missed because they were not tracking corporate actions. Neither approach works. A weekly cadence is the sweet spot: frequent enough to catch problems before they compound, but infrequent enough to filter out daily noise. Then there is the cost of missing corporate actions. Indian markets are full of them: bonus issues, stock splits, rights issues, dividend record dates, and buyback tenders. Missing a rights issue deadline means losing your proportional claim to discounted shares. Not knowing about a stock split can cause panic when you see your share price suddenly halved. These events are not rare; in any given week, at least a few companies in a typical 20-stock portfolio will have some corporate action or quarterly result announcement. The false comfort of set-and-forget investing is that you believe nothing needs your attention. The reality is that your portfolio needs a small amount of regular attention, and a weekly review is the most efficient way to give it.