Why SIP Investors Should Root for a Flat Market

Investors hope and want markets to go up all the time. Every single day. Except if you're a SIP investor, that instinct is working against you.

Here's the uncomfortable truth: a SIP investor should actually want the market to stay flat, muted, even a little miserable, for as long as possible. Not because you enjoy watching your portfolio go nowhere. But because that's when your SIP is quietly doing its best work.

How does a SIP work in a flat market?

Think about what a SIP actually does. Every month, you invest a fixed amount and buy units at whatever price the market is offering that day. When markets are low, your money buys more units. When markets are high, it buys fewer. Do this long enough, and your average purchase price tends to be lower than if you'd simply bought at the market's average level. That's rupee-cost averaging, and it works well in low, boring, sideways markets.

A lumpsum investor wants the opposite. They've deployed their entire corpus on day one, so from that point on, only a rising market helps them. Every day the market is flat or falling, they're standing still or losing ground.

But a SIP investor hasn't deployed everything yet. Most of the money is still coming, next month, and the month after, and the month after that. A muted market means each of those future instalments is being accumulated at ‘competitive’ prices. And that's the whole point.

Why do investors quit their SIP just when it’s working?

This is where it gets counterintuitive, and where most investors quietly sabotage themselves.

A flat market doesn't feel like it's working. Your portfolio statement shows more or less the same number, month after month. There's no moment worth talking about, nothing to feel good about. And so, right when the SIP mechanism is accumulating the most units at the best prices, investors start to lose faith. They pause the SIP. They wait for ‘a better time to invest.’ They chase whatever fund happens to be rallying that quarter instead.

In doing so, they abandon their only strategy exactly when it's setting them up for the payoff, because the payoff doesn't show up until the market eventually does move, and all those competitively priced units get repriced higher.

Why do SIP returns look bad in a flat market?

Here's the thing about SIP returns that nobody quite prepares you for. Measured at the wrong moment, they can look genuinely alarming. A SIP that's been running for a year or two through a falling or flat market can show returns that are barely positive, sometimes even negative. Measure the exact same SIP a few years later, after the market has had time to recover and compound, and the picture looks completely different, comfortably ahead of what a fixed deposit or a savings account would have given you.

Nothing about the SIP changed in between. Nothing about the strategy failed. Only the date on which you happened to check it changed.

That's the whole point of this piece. Point-to-point returns are just that, a snapshot, taken on a day the market happened to be wherever it was. The worst looking numbers you'll ever see and the best numbers you'll ever see can both belong to the same SIP, just measured a few months or years apart. If you'd started the same SIP a little earlier, or checked it a little later, the story could look entirely different.

What should a SIP investor do in a flat market?

For most SIP investors, the answer is to keep the SIP running and judge it over years, not months. Chasing or panicking over a single return number, positive or negative, is the wrong instinct. The number will look different next quarter. It always does. What won't change is whether you kept investing through the stretch that didn't look good, because that's usually the stretch that ends up mattering most.

So, the next time your portfolio value looks muted, resist the urge to see it as a problem. It probably isn't one. It's the unglamorous, unremarkable middle part of a story whose ending you haven't seen yet.

The investors who understand this end up wanting two very different things at two very different times. A calm, low market while they're still investing. And a rising one only once they're ready to stop. Confusing the two is one of the more common, and more costly, mistakes in SIP investing.

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Disclaimer: This article is for educational purposes only and does not constitute investment advice. Investments in securities markets are subject to market risks; read all related documents carefully before investing.