Knowing what's out there isn't the same as knowing how much to own. This module covers portfolio construction end to end, how much should be global, US vs rest of world, bonds and commodities, funding, and rebalancing without losing money to taxes.
You now know what to hold and roughly how much of each. This chapter turns to a more mechanical question, but one that genuinely affects your outcome: when you have money to invest, should it go in all at once, or gradually over time?
A Systematic Investment Plan, or SIP, means investing a fixed amount at regular intervals, monthly, say, rather than all at once. This is also popularly known as dollar-cost averaging. The mechanism is simple: when prices are high, your fixed amount buys fewer shares; when prices are low, it buys more. Over time, this smooths out the price you effectively paid, rather than betting everything on wherever the market happened to be on one particular day.
The real benefit isn't mathematical so much as behavioural. Nobody can reliably time market tops and bottoms, not professionals, not you. A SIP removes the need to try. It also makes it easier to keep investing through a bearish market, since a falling market means your fixed contribution is quietly buying more shares.
None of this means a lump sum is the wrong choice. Markets rise more often than they fall over any long stretch, which means, on average, investing a lump sum immediately tends to outperform spreading the same amount out over time, simply because more of your money is in the market for longer. Waiting to average in has a real, quantifiable cost when markets are going up, which is most of the time.
So the honest picture is a trade-off. Lump sum wins, on average, because more time in the market beats timing the market. SIP wins on the specific occasions markets fall or stay flat for a stretch, and it wins almost every time on the emotional dimension, since it's far easier to stick with than watching a single large investment swing right after you made it.
There's a practical issue specific to investing globally from India. Every time you remit money abroad, the currency conversion cost applies again. A SIP means paying that cost on every single contribution, month after month, while a lump sum pays it once. For frequent, modest contributions, this recurring cost is worth weighing against the behavioural benefit SIPs otherwise offer.
If you have a large sum sitting ready today, and you can genuinely stomach the swings, a lump sum has the stronger mathematical case. If your money arrives gradually, as it does for most people through salary or vesting, or if you know volatility would tempt you into bad decisions, a SIP is the more realistic path to actually staying invested, which matters more than any small mathematical edge. With the portfolio built and the money getting in, one question remains before it can be left alone: what to do as it inevitably drifts out of shape.
One question. Less than 10 seconds.
Reinforce what you've learned before continuing to the next chapter.
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