Foreign investors pulled more than $20 billion out of Indian shares in the first four months of 2026. Monthly SIPs kept buying straight through it, and that indifference is the whole design.
Every month, on a fixed date, the same amount leaves crores of Indian bank accounts and buys mutual fund units. It happens in rising markets and falling ones, through elections, wars and World Cups. This is the systematic investment plan, and its defining feature is that it has no opinion about the news. In the first four months of 2026, as war in the Gulf sent oil above $100, foreign investors pulled more than $20 billion out of Indian shares. SIP money kept arriving on schedule, close to ₹30,000 crore a month, and bought much of what they sold.
The discount nobody celebrates
Suppose a SIP puts ₹2,000 into a Nifty 50 index fund every month. When the index is expensive, the ₹2,000 buys fewer units. When the market drops 10%, the same ₹2,000 buys about 11% more of them. No judgement was involved. The fixed amount did the arithmetic on its own, buying more when prices are low and less when they are high. Finance textbooks call this rupee cost averaging. A canteen would call it stocking up while the price is down.
To a SIP, a crash is a sale on the same goods it was already buying.
What it actually protects you from
Mostly, yourself. The most expensive habit in investing is timing: waiting to buy until things settle down, selling when the headlines turn frightening. Calm days rarely announce themselves in advance, and the market’s best days have a habit of sitting directly beside its worst ones. A SIP removes the decision entirely. There is nothing left to time, because every date on the calendar is already committed.
The catch is that the arithmetic only works if the money keeps flowing when it feels worst. Stopping a SIP in a bear market cancels the discount and keeps the full-price purchases. The investors who did well out of SIPs are, overwhelmingly, the ones who left them alone. Combined with basic diversification, it is roughly the strategy most professional fund managers fail to beat.
Sources: AMFI monthly data; NSDL foreign portfolio investment data, January–April 2026.
- A SIP invests a fixed amount monthly, regardless of market conditions.
- When prices fall, the same ₹2,000 buys more units. This is called rupee cost averaging.
- It removes the most expensive decision in investing, which is trying to time the market.
- The arithmetic only works if the SIP keeps running through the frightening months.
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