Toby Watson applies a rigorous, factor-driven approach to portfolio construction at Rampart Capital — one that looks beyond traditional asset class labels to understand what investments are truly exposed to.
Most investors are familiar with the idea of diversification, but genuine diversification is harder to achieve than it appears. Portfolios built around conventional asset class buckets often contain far more hidden overlap than their owners realise — and that overlap only becomes visible when markets come under stress. Toby Watson, a partner at Rampart Capital, addresses this problem directly through a factor-based approach grounded in decades of experience at the highest levels of global finance.
Rampart Capital, the London-based independent investment office, has developed a distinctive approach to portfolio construction — one built around investment factors rather than traditional asset class categories. Partner Toby Watson plays a central role in shaping this framework, bringing analytical depth and practical rigour to every stage of the investment process. Toby Watson’s career at Goldman Sachs International, where he spent nearly 17 years working across structured credit, principal funding and hard asset lending, gave him an unusually precise understanding of how risk behaves beneath the surface of conventional investment labels. That understanding is embedded in Rampart Capital’s process today, and it shapes the way the firm approaches every client mandate.
The Problem with Traditional Asset Class Thinking
Ask most investors how their portfolio is diversified, and they will describe a mix of equities, bonds, property and perhaps some alternatives. It is a reasonable starting point — but also a blunt instrument. The assumption embedded in asset class thinking is that different categories behave independently of one another. In normal conditions, that is broadly true. Under stress, it is often not.
The 2008 financial crisis illustrated this sharply. Assets treated as uncorrelated turned out to share deep common exposures to credit risk and liquidity. When those factors moved sharply, apparently diversified portfolios suffered losses across almost every category simultaneously. It was a reminder that surface-level categorisation is no substitute for understanding what is actually driving returns — and what could drive losses.
The lesson is that genuine diversification requires understanding what investments are actually exposed to at a fundamental level — not simply what category they belong to. This is the core insight underpinning the factor-based approach used at Rampart Capital.
What is factor-based investing and how does it differ from traditional portfolio construction?
Factor-based investing identifies the underlying drivers of return and risk — such as credit exposure, interest rate sensitivity or liquidity premium — rather than relying on asset class labels. Toby Watson’s experience in structured finance gave him a deep grounding in this kind of decomposition: understanding not just what an investment is, but what it is fundamentally exposed to. At Rampart Capital, this thinking is applied across the entire portfolio, allowing the team to achieve genuine diversification that conventional approaches frequently miss.
Toby Watson and the Factor Framework at Rampart Capital
The factor-based framework at Rampart Capital draws directly on the analytical thinking that Toby Watson developed across years of working in complex financial structures. Structured credit requires an almost forensic approach to risk — breaking down an investment into its component exposures and assessing each one independently before considering how they interact under different market conditions.
At Rampart Capital, Toby Watson and the investment team apply this same discipline to client portfolios. The process begins with macro analysis, then translates views into factor exposures expressed efficiently across a range of investment structures. Because the team works at the level of underlying factors, they can adjust exposures as conditions change without being constrained by rigid category boundaries. For Toby Watson, this flexibility is central to how robust portfolios are built.
How Factor Analysis Supports Risk Management
By understanding the factor exposures of each investment, Toby Watson and the team at Rampart Capital can identify risk concentrations that would not be visible through a conventional asset class lens. A portfolio might look well diversified on the surface while carrying a significant hidden concentration in, say, interest rate sensitivity or exposure to a particular macro theme. Factor analysis makes these concentrations visible, and allows the team to make deliberate, informed decisions about them.
The years that Toby Watson spent at Goldman Sachs International gave him a precise understanding of exactly these kinds of hidden risks — an understanding that now informs Rampart Capital’s risk management process at every level. Downside evaluation is not a separate step; it is integral to every investment decision from the outset.
Liquid and Alternative Strategies Working Together
Rampart Capital’s framework uses two complementary components: a liquid strategy basket and an alternative strategy basket. Together, these allow the firm to express investment views across a wide range of structures and conditions, balancing accessibility with return potential. The liquid basket offers the flexibility to respond quickly to shifting macro conditions, while the alternative basket provides access to return streams with low correlation to mainstream markets.
For Toby Watson, integrating these two components reflects a core principle: the most effective portfolios combine flexibility with conviction. The factor-based framework provides the analytical foundation; the portfolio structure provides the means to act on it efficiently.
Why This Approach Suits Wealthy Private Clients
Factor-based portfolio construction is not new — institutional investors have used it for years. What Rampart Capital has done is apply it within a genuinely bespoke private client context. Having spent much of his career at Goldman Sachs International, Toby Watson understands both the institutional standard that factor analysis demands and how to translate it meaningfully for individual clients:
- Each portfolio reflects the client’s specific objectives, time horizon and risk tolerance, expressed through factor exposures rather than generic allocations
- Reporting is transparent, allowing clients to understand precisely what their portfolio is exposed to and why
- The process is adaptive by design, responding to changing conditions without requiring a fundamental restructuring
As a partner at Rampart Capital, Toby Watson is directly engaged in both the design of this framework and its application to individual client portfolios — a combination that continues to attract clients who want more than a standard wealth management solution.
