Markets have rarely presented investors with such a striking conundrum. Geopolitical fragmentation, structural economic upheaval and the deepening uncertainty of a multipolar world argue for caution, yet the transformational rise of AI holds out the promise of a generational leap in growth.
History offers a reminder of how great innovations have consistently emerged from periods of intense global friction, and AI is no different. The real challenge for investors, then, is not whether to participate in progress, but how to do so without stepping on the “landmines” of excessive valuations and overconfidence.
For Stonehage Fleming, which oversees multi-generational wealth for ultra-high-net-worth families, the most effective strategy involves the discipline to distinguish between a great company and a great investment and to avoid overpaying for even the most compelling investment story.
The mathematics of recovery
The core of this philosophy is rooted in a simple, often overlooked mathematical reality – the asymmetry of loss. A 10% decline requires more than an 11% gain to break even, and a 20% loss demands a 25% recovery.
Lehani Marais, partner in the investment management division at Stonehage Fleming, notes that in an opaque global outlook, the focus must be on preventing a permanent setback rather than attempting to maximise immediate upside. “When we talk about ‘landmines’, we’re not talking about a disappointing year or two. We’re talking about the permanent loss of capital,” he says.
“This is why limiting downside often matters more than fully capturing every upside. You don’t need to be the hero every year. Being consistently good, occasionally great and never awful can outperform being brilliant one year and disastrous the next.”
The danger of false certainty
Most investment disasters stem not from a lack of information, but from overconfidence. Even the world’s most iconic investors rarely attempt to “call” the market with precision. Howard Marks only made five “big calls” in a career spanning over 50 years. What does that tell us? Even the best investors don’t rely on their ability to time the market. The real value lies in remaining invested for the long haul, allowing compounding to drive growth while building portfolios that are robust to shocks.
Navigating the concentration trap
A significant challenge in the current global and local context is market concentration. While the “Magnificent 7” AI heavyweights have driven a staggering portion of global returns, this dominance creates a hidden risk for passive investors. Given that market-cap-weighted indices allocate more capital to the largest companies, investors can inadvertently become over-exposed to “crowded trades” at the very moment they are most expensive.
The solution lies in more thoughtful, active portfolio construction. Increasing inflows into passive strategies can make indices concentrated in a handful of the biggest names. This underlines the importance of regularly reviewing exposures. In recent years, we have chosen to allocate some passive exposure to equal-weighted indices, rather than traditional market-cap-weighted ones, to help mitigate these risks.
Diversification with intent
For South African families, global diversification remains a cornerstone of risk management. However, the primary motivation should be the reduction of country-specific risk and access to unique opportunities, rather than speculative bets on currency movements. Diversification must be well-considered and strategic, not merely owning more assets for the sake of it.
Effective risk diversification means doing so with the intent to diversify sources of return. In the South African context, currency should not be the primary driver. Investors should stay the course in the appropriate portfolio, accessing global opportunities for the right reasons rather than reacting to short-term rand volatility.
The power of patience
Ultimately, creating and sustaining wealth does not rely on bold, risky moves. It relies on consistent, careful choices and the discipline to stick to a strategy rather than succumb to emotional decision-making.
In a world obsessed with the “now”, the real winners are those who have the patience to maintain a long-term perspective. Time, patience and discipline remain the only true secrets to successful investing. By prioritising resilience over heroism, investors can ensure they are not merely surviving market cycles but are strategically positioned to capture long-term growth and compound their capital.
