The Total Portfolio Approach – New Innovation or Rebranded Old Ideas?

TPA: Total Portfolio Approach – Innovation or Old Ideas?

The Total Portfolio Approach – New Innovation or Rebranded Old Ideas?

Total Portfolio Approach (TPA): what it is, what it delivers, and what’s achievable within a flexible Strategic Asset Allocation (SSA).

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The Total Portfolio Approach has attracted growing attention from large, sophisticated institutional investors and is often positioned as a transformational alternative to traditional SAA—more dynamic, more factor driven, and less constrained by asset class ranges. This paper takes a measured, evidence-based look at what TPA actually changes in practice: where it reflects genuine innovation versus where it largely rebrands long-standing approaches. In this paper, we seek to clarify what TPA implementation looks like in the real world, including similarities and differences from traditional Strategic Asset Allocation approaches.
Key Takeaways
  1. TPA cannot be defined precisely. One of the core challenges to understanding the Total Portfolio Approach is that it is not a monolithic methodology that can be applied off the shelf. While TPA proponents sometimes define it as looking at risk in the total-portfolio context, this doesn’t sufficiently distinguish TPA from other approaches to portfolio management. In practice, “TPA” refers to a range of approaches that are less constrained than traditional Strategic Asset Allocation, often using reference portfolios and factor exposures rather than asset class ranges as the primary risk constraints. The core decision for institutions is how much discretion to delegate to the CIO/OCIO or internal team, under what parameters, and with what oversight and reporting. The teams will then have flexibility to rotate across investments with similar risk factors.
  2. Many perceived benefits can be achieved within a traditional SAA framework. Greater dynamism, better alignment to underlying risk factors, and reduced overdiversification are frequently cited as advantages of TPA. Our analysis suggests these features can—and often are—incorporated into a Strategic Asset Allocation framework by using broad policy categories, wide rebalancing ranges, Opportunity Allocations, and risk management through factor and tracking error lenses. For many institutions, the question is less about adopting a new label and more about evolving existing policies to embed these elements thoughtfully.
  3. What truly changes under TPA is who makes investment decisions and how those decisions are made. Compared with traditional approaches, TPA typically concentrates more authority with CIOs/OCIOs and investment teams and shifts emphasis from holdings-based limits (such as asset class minimums and maximums) toward returns and factor-based risk controls. This can enable a more active implementation, but it also raises important considerations around governance, accountability, transparency, and suitability. Not every institution will have, or want to build the governance capacity and risk tolerance required to fully adopt a TPA-style model.

Assessing TPA: A Practical Guide for Institutional Portfolio Decision Makers

TPA means different things to different people, and in practice, there is a wide range of practices used by proponents of TPA. These “TPA practices” blend new approaches with rebranding of strategies that have been around for decades, many of which are widely used without being described as “TPA” by those doing them. Those looking to understand TPA must realize that it is not a well-defined approach. It is an approach with a high level of delegation to the investment team to implement a highly active investment strategy, and there are many ways institutions implement that under the TPA umbrella.

Aon’s Thought Leader

Eric Friedman, CFA, FSA, EA
Investment Analytics and Strategy Development, Aon Investments USA Inc.

The Total Portfolio Approach is an A La Carte Menu

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The Total Portfolio Approach is an A La Carte Menu

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