Rethinking Portfolio Construction for a Non-Normal World

A Changing Climate: The New Normal of Uncertainty

Volatility is no longer the exception; it is the climate we operate in. Equity markets are turbulent, the dollar has had its worst start to the year since the 1970s and fixed income is no longer providing the shelter it once did. Traditional diversification is being tested. Investing in a new world requires portfolios that can weather macro and geopolitical uncertainty therefore the assumptions underpinning portfolio construction, ranging from correlations to safe havens – are being rewritten. As with ecosystems facing climate change, portfolios require structural diversity and adaptability to endure.

In nature, resilience does not come from uniformity, it comes from diversity, adaptation and balance. The same is true with investing. At PPS Investments, we believe portfolio construction in a non-normal world requires the mindset of an ecologist, not just a strategist. Gone are the days when a traditional mix of asset classes could reliably weather every storm. Today’s investment environment is more like a living ecosystem, complex, dynamic and sensitive to shifts in climate, soil, and species. We build portfolios like ecosystems: designed to thrive across conditions, absorb shocks and deliver outcomes aligned to our members’ long-term goals.

The Power of Portfolio Construction and Opportunity Through Diversity

South Africa, like its ecosystems, offers rich and unique investment biodiversity, from high real yields in local fixed income, to specialist managers with deep local knowledge, to emerging market dynamics that often decouple from developed world cycles. However, it also presents constraints including volatility, concentration and structural challenges. These are the environmental stressors we plan for and navigate using globally aware, locally grounded design.

In nature, monocultures are vulnerable. Just as ecological monocultures lack the resilience to withstand shocks, investment portfolios concentrated in one dimension face similar fragility. The same applies to portfolios overly reliant on a single style, asset class or philosophy. That is why PPS Investments employs an approach using specialist and multi asset investment strategies, not as a diversification checkbox, but as an intentional design choice. Each manager brings a different genetic code to the portfolio: specialist or multi asset, local or global, systematic or discretionary.

This biodiversity of insight helps ensure the portfolio can continue to function even if one species (or strategy) underperforms. Just as a resilient ecosystem contains both fast-adapting species and long-lived anchors, our portfolios blend agility and endurance.

Ecosystem Dynamics: Adapting to a Shifting Macro Landscape

Nature does not stand still and neither do markets. Today’s portfolios must account for fat tails, regime shifts, currency shocks, climate change and policy pivots. As such, scenario-based planning is more effective than relying on single-point forecasts. We view these scenarios like changing seasons. Some species flourish in dry conditions; others in rain. Similarly, our portfolios incorporate assets and strategies that respond differently to economic environments, each element has a role, just like in nature.

What we do in practice is to research fund managers who are successful in investing along these lines in its multi-manager business. It also looks to invest outside of the traditional investment processes focused on listed equities, like hedge funds and private equity, where it can help support things like public-private partnerships.

The DNA of Resilience: More Than Just Allocation

Building resilient portfolios requires layering resilience across multiple dimensions. strategic asset allocation (SAA) serves as the foundation to root member needs and long-term objectives – the “soil” of the ecosystem.

In support is tactical asset allocation (TAA) representing the short-term responses to conditions, akin to migratory patterns or flowering cycles. Furthermore, manager selection represents the carefully curation to ensure complementary capabilities, risk management is about monitoring exposure, correlations, and behavioural biases – the immune system of the ecosystem.

This system is supported by a strong data architecture, akin to an ecosystem’s neural network, that allows us to detect stress early and adapt quickly.

Sustainability as a Natural Principle

In resilient ecosystems, sustainability is not an add-on – it is intrinsic. As an example, it is very natural for us to be invested in education, because it is core to our business offering. However, it is also a clear societal benefit and an effective way to help mitigate the risks of societal decline.

The same applies to portfolios built with a long-term, intergenerational view. At PPS Investments, we are on a journey to embed sustainability, aligned with both global frameworks like the UN SDGs and local principles like CRISA 2. Our approach prioritises not only financial health but social and environmental stewardship, ensuring portfolios reflect our members’ values and the world they want to live in. In essence, we are not just building portfolios, we are cultivating living systems.

Stewardship in an Uncertain World

In an increasingly fragile and complex investment climate, our job is not to predict the weather. It is to design ecosystems that endure and adapt. We see portfolio construction not as a formula, but as a living system that evolves over time. It is a collective of voices brought together through the multi-manager approach, a resilient design anchored in long-term purpose with short-term adaptability and a form of stewardship. Because in the end, our portfolios do not exist in models, they exist in the lives and futures of our members.