Major Asset Classes | March 2026 | Performance Review

Key Takeaways

• Commodities ETF GSG up 24% in March.
• Global property ETF VNQI down over 12% month.
• Global Market Index fell biggest monthly drop in 3.5 years.
• All asset classes still up year‑over‑year and three‑year.
• Iran war sparked broad sell‑off across diversified portfolios.

Summary

March 2026 saw a sharp market downturn driven by the escalating war with Iran. While most major asset classes posted losses, the iShares S&P GSCI Commodity‑Indexed Trust (GSG) surged more than 24%, making it the month’s top performer, and cash also posted modest gains. Global property exposure (VNQI) suffered the steepest decline, falling over 12%, and the Global Market Index recorded its largest monthly drop in three and a half years after an 11‑month winning streak. Despite the monthly pain, all asset classes remain in positive territory year‑over‑year and over the past three years.

Pulse Analysis

The sudden escalation of hostilities between the United States and Iran in early March sent shockwaves through global equity and fixed‑income markets, prompting a rapid sell‑off that erased months of gains. Investors fled risk‑on assets, driving the Global Market Index (GMI) to its steepest monthly decline since mid‑2022. In contrast, raw‑material exposure proved resilient; the iShares S&P GSCI Commodity‑Indexed Trust (GSG) rallied more than 24% as oil, industrial metals and agricultural futures surged on supply‑concern premiums. Even cash positions posted modest upside, underscoring the classic flight‑to‑safety behavior during geopolitical turbulence.

The performance split underscores the importance of true multi‑asset diversification. The GMI, an unmanaged, market‑value weighted composite of ETFs across equities, bonds, real estate and commodities, showed that a modest tilt toward commodities and cash can generate alpha when equities slump. Meanwhile, sector‑specific ETFs such as the global property fund VNQI suffered over 12% losses, reflecting heightened sensitivity to financing costs and geopolitical risk in real‑estate markets. Portfolio managers who maintain dynamic weightings rather than static allocations are better positioned to capture the upside of commodity rallies while limiting downside exposure.

Looking ahead, the market’s year‑over‑year and three‑year positive returns suggest the March dip may be a temporary blip rather than a structural shift. Analysts are monitoring diplomatic channels for signs that the Iran conflict could de‑escalate within the next quarter, which would likely restore risk appetite and reignite equity momentum. In the interim, investors are advised to reassess risk budgets, consider increasing exposure to inflation‑linked commodities, and retain a cash cushion to navigate further volatility. Such a balanced approach aligns with the long‑term bullish bias that has characterized the past nine years of market performance.