Navigating Currency Volatility: Strategies for Investors

In recent months, the foreign exchange market has experienced sharper-than-usual volatility, prompting investors to reassess their strategies for managing currency risk in their portfolios. According to The Business Times, the US dollar index weakened dramatically in late 2025, sliding to a multi-year low due to aggressive interest rate cuts by the Federal Reserve and a weakening labor market. However, it reversed course and surged to its highest level in over a year by June 2026, buoyed by strong equity and tech markets alongside a resilient economic outlook.

In contrast, the Japanese yen has faced significant fluctuations, briefly appreciating in mid-2025 before hitting a 40-year low against the US dollar by June 2026. Meanwhile, Malaysia's ringgit has shown remarkable resilience, outperforming other Asian currencies and appreciating 7% against the dollar after reaching a 13-month high in November 2025.

“A significant depreciation in that currency can diminish or erase attractive investment returns when converted back to an investor’s home currency.”Christopher Wong, FX strategist at OCBC

Experts suggest that the current climate necessitates active management and diversification of currency risk across cross-border portfolios. Christopher Wong, FX strategist at OCBC, highlighted that a portfolio might appear diversified in terms of stocks and bonds, but if most assets are tied to a single currency, investors remain vulnerable to common currency risks. He noted that a significant depreciation in that currency can diminish or erase attractive investment returns when converted back to an investor’s home currency.

Impact of Monetary Policy on Currency Stability

The Monetary Authority of Singapore (MAS) employs a unique monetary policy framework centered on the exchange rate, which significantly influences inflation in the country. In Singapore's open economy, where gross exports and imports exceed 300% of GDP, the exchange rate serves as a more effective tool for maintaining price stability than interest rates. MAS manages the Singapore dollar against a trade-weighted basket of currencies, adjusting its nominal effective exchange rate (S$NEER) within a policy band to ensure medium-term price stability.

Recent adjustments to the S$NEER policy band reflect MAS's proactive stance against imported inflation, particularly amid rising oil prices. In July 2026, MAS unexpectedly tightened its monetary policy for the second consecutive time, indicating a calibrated adjustment to the rate of appreciation of the S$NEER, which highlights the central bank's commitment to addressing inflationary pressures while navigating currency volatility.

Diversification Strategies for Investors

Analysts predict that currency movements will become increasingly differentiated throughout the year, influenced by varying monetary policies, fiscal credibility, and domestic growth prospects. While the Singapore dollar and the Swiss franc are viewed as more resilient, emerging market currencies like the Indonesian rupiah and the yen are expected to remain volatile.

Saktiandi Supaat, head of FX research at Maybank Securities, emphasized the importance of not solely focusing on a single “winning” currency. Instead, he advises investors to diversify their portfolios across currencies with different economic drivers. He stated that a balanced portfolio should combine relatively defensive currencies with selective exposure to cyclical currencies where valuations and fundamentals remain attractive.

“A balanced portfolio should combine relatively defensive currencies with selective exposure to cyclical currencies where valuations and fundamentals remain attractive.”Saktiandi Supaat, head of FX research at Maybank Securities

Investment strategies may differ based on the investor's time horizon. Long-term investors might not need to hedge against every short-term currency fluctuation, while those with defined liabilities may require more active management. Regular rebalancing of portfolios is also recommended to avoid unintended currency concentrations over time.

Tools for Managing Currency Risk

Currency options are a common tool for managing risk during periods of heightened uncertainty. These options provide flexibility, allowing investors to protect against adverse currency movements while still participating in favorable shifts. However, the costs associated with options can be higher during volatile periods, potentially impacting overall returns.

“The aim is not to eliminate all currency risk but to ensure that no single currency has an outsized impact on the portfolio.”Christopher Wong, FX strategist at OCBC

Different types of investors may approach currency hedging differently. Bond investors, who prioritize income stability and capital preservation, often hedge most or all of their foreign currency exposure to maintain predictable returns. In contrast, equity investors, who typically seek capital appreciation, may hedge only part of their exposure or remain unhedged if they anticipate currency appreciation or if hedging costs are prohibitive.

Wong concluded that the key to effective currency management lies in being selective. He stated that the aim is not to eliminate all currency risk but to ensure that no single currency has an outsized impact on the portfolio.