The Art of the Long Game: Why Avoiding ‘Landmines’ is the Ultimate Investment Strategy
The current investment landscape presents a striking conundrum. While the “polycrisis” of geopolitical fragmentation and structural economic shifts seems to warrant a defensive approach, the transformational rise of Artificial Intelligence (AI) offers a generational leap in growth. Historically, great innovations have often emerged from periods of intense global friction, and AI is no different. For the investor, the challenge is not whether to participate in progress, but how to do so without stepping on the “landmines” of excessive valuation and overconfidence.
For Stonehage Fleming, who 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 a capital decline. A 10% decline requires more than an 11% gain to break even, but a 20% decline 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 permanent setback rather than trying to maximize 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," says Marais. "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. As Mark Twain observed, “It’s not what you don’t know that gets you into trouble - it’s what you know for sure that just isn’t so.”
Bryn Hatty, Chief Investment Officer at Stonehage Fleming, points out that even the world’s most iconic investors rarely attempt to "call" the market with precision. "Howard Marks has said that he's only made five 'big calls' in a career spanning over 50 years," Hatty observes. "What does that tell us? Even the best 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.
Hatty suggests that 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," Hatty explains. "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.
Reyneke van Wyk, Head of Investment Management SA, emphasizes that 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," says Van Wyk. "In the South African context, the 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 instead of succumbing 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.
Disclaimer
Opinions expressed here are as of the date of publication and subject to change without notice. Products and services may not be available in all jurisdictions or to all client types.
Stonehage Fleming Investment Management South Africa (Pty) Ltd is authorised and regulated by the Financial Sector Conduct Authority (South Africa) as a Financial Services Provider (FSP No. 42847). Approved for issue in South Africa by Stonehage Fleming Investment Management (South Africa) (Pty) Ltd (FSP No. 42847). Please note that representatives may be acting under supervision. © Stonehage Fleming 2026.