Currency Overlay

Splitting the asset bet from the currency bet

When you invest abroad, you make two bets, not one. The first is on the assets themselves, foreign stocks or bonds. The second, often overlooked, is on the currency: returns must eventually be converted back to rupees, so exchange-rate moves can amplify or erase your gains. A currency overlay is a strategy that manages this second bet separately from the first, treating currency risk as its own layer to be hedged or actively traded.

The insight is that you might love a US stock but have no view on the dollar, or you might want US-equity exposure without taking on rupee-dollar risk. An overlay lets you separate the two decisions.

How it works

A currency overlay manager uses forwards, futures and options to adjust the currency exposure of an existing international portfolio, without touching the underlying holdings. There are two broad approaches. A passive overlay simply hedges currency exposure back to the home currency to neutralise forex risk, useful for investors who want pure asset returns. An active overlay goes further, taking deliberate currency positions to generate additional return, betting that one currency will strengthen or weaken, run as a distinct source of alpha.

This specialisation is why large global funds often hire dedicated currency-overlay managers, separate from their equity and bond teams.

Relevance for Indian investors

For Indian investors going global, through international mutual funds, ETFs or direct investment under the LRS, currency overlay matters even if they never use the term. Most retail international funds in India are unhedged, meaning investors take on full rupee-dollar risk: if the rupee weakens (its long-term tendency), it boosts their returns, but a strengthening rupee eats into them.

Some funds and structures offer hedged share classes that apply an overlay-like hedge. The practical takeaway is to always check whether an international investment is hedged or unhedged, because the currency component can dominate returns over short and medium periods. Sophisticated investors think of their foreign allocation as two distinct decisions, the asset and the currency, which is exactly the discipline a currency overlay formalises.