Since Harry Markowitz developed trendy portfolio principle’s mean-variance optimization (MVO), monetary advisors and wealth managers have been confronted with a vital query: What’s the relative significance of threat tolerance (the investor’s perspective towards threat) in comparison with threat capability (the investor’s skill to endure unfavourable outcomes)?
I have to confess that I’ve been perplexed by this query for many years. My frequent co-author, Paul Kaplan, and I consider we’ve got solved this 50+ yr conundrum utilizing an expanded MVO optimization mannequin known as web price optimization (NWO).
I plan to debate our findings on my panel at CFA Institute LIVE 2025 in Chicago in Could.
How did we get right here?
The objective (goal operate) of mean-variance optimization is to maximise the anticipated return of a portfolio, minus a personalised penalty for the anticipated threat (variance) of the portfolio. Customized penalty is the investor’s threat tolerance coefficient multiplied by the variance of the portfolio.
In MVO, the “threat tolerance” coefficient is a single quantity reflecting the speed at which the investor is prepared to commerce off extra threat in pursuit of extra anticipated return. Realizing the investor’s threat tolerance coefficient lets you remedy for the corresponding MVO environment friendly portfolio.
Within the economics literature and the works of Nobel Prize winners like Paul Samuelson, threat tolerance is clearly associated to the investor’s perspective towards threat, not threat capability.
Advisors regularly have a deep understanding of their purchasers’ conditions. This would possibly embrace data on extra accounts, spousal property, compensation data, mortgage funds, and so forth. Some purchasers could also be very snug with threat, however with little capability for opposed outcomes given their circumstances. Whereas different purchasers are extraordinarily uncomfortable with threat however can tolerate opposed outcomes with little impression on their monetary well-being. Advisors discover themselves navigating what has been a extremely subjective threat tolerance (perspective) versus threat capability conundrum.
Two Approaches to Threat Capability
Pragmatically, there have been two approaches that explicitly concentrate on threat capability.
The primary strategy is a standard function of the “scoring” element of threat tolerance questionnaires. When scoring the responses to a threat tolerance questionnaire, there are regularly two scores: a threat tolerance rating and a time horizon rating. The time horizon rating serves as a crude proxy for the investor’s capability to tackle threat that limits which portfolios are deemed appropriate.
The second strategy might be much less recognized to practitioners however prevalent within the practitioner-oriented literature. This strategy is finest represented by the “discretionary wealth speculation” primarily put forth by Jarrod Willcox.[1] In a majority of these approaches, the investor’s perspective towards threat is discounted or ignored, and monetary ratios just like the ratio of assets-to-liabilities are used as the first issue to estimate a so-called “threat tolerance coefficient. I take advantage of quotes to tell apart this from the financial definition of threat tolerance as an perspective.
Internet Price Optimization (NWO)
In our 2024 CFA Institute Analysis Basis guide, “Lifetime Monetary Recommendation,” Kaplan and I put forth NWO. It’s a important extension of MVO. NWO consists of all the investor’s property and labilities within the optimization, particularly human capital, and it optimizes the investor’s holistic financial stability sheet.
An investor’s financial stability sheet consists of all his or her property — dwelling, land, collectables, and all monetary property. Most significantly, the financial stability sheet consists of the capitalized worth of the investor’s lifetime of earnings — human capital. For many individuals, the mortality weighted web current worth of all future labor revenue, together with deferred labor revenue within the type of outlined advantages and social safety, is their single largest asset.
The lifetime of money flows stemming from human capital is regularly harking back to the money flows you’ll obtain from a big, inflation-linked, long-duration bond. Others have much less regular human capital that may resemble a inventory/bond combine.
On the right-side of an financial stability sheet, all of us have ongoing bills, reminiscent of lease, a mortgage, insurance coverage, medical prices, and meals. Whereas these might not be authorized liabilities, these bills are sometimes inescapable. Collectively, their capitalized values kind what we consider because the investor’s nondiscretionary consumption legal responsibility.
Simply as a stability sheet is a vital indicator of an organization’s monetary well being, a holistic particular person financial stability sheet is a wonderful indicator of the investor’s general monetary well being and capability for taking up threat. The distinction between the full worth of all property and all liabilities is web price. Therefore the time period web price optimization or NWO.
NWO consists of all the main financial stability sheet entries. Nontradable entries — the investor’s human capital and nondiscretionary consumption legal responsibility — are included within the optimization, though the optimizer can’t change the web current worth of both. These nontradeable property are modeled as portfolios of asset lessons, which allow us to derive correct market-based low cost charges and perceive how they work together with the remainder of the stability sheet.
Think about a 45-year previous pharmaceutical scientist with a base wage of $200,000, adjusted every year for inflation, who receives $100,000 nominal restricted inventory items with a five-year vesting schedule who additionally expects to obtain roughly $25,000 per yr from social safety beginning at age 65. One may mannequin this particular person’s human capital as almost 2/3rds long-duration-inflation-adjusted company bonds with a period similar to the 20 years of money flows, and almost 1/3rd mid-cap shares (reflecting the dimensions of the corporate).
You may refine the 1/3rd mid-cap shares by modeling them based mostly on the pharmaceutical sector and even utilizing the particular inventory in query. The present web current worth of social safety isn’t price that a lot at this time, however it too needs to be accounted for correctly. The anticipated returns on every kind the idea for a weighted common value of capital for calculating the worth of the scientist’s human capital.
The capitalized worth of the investor’s nondiscretionary consumption legal responsibility, which is considerably like issuing a long-duration-inflation-linked bond with outgoing coupon funds, is included as a nontradable unfavourable holding within the optimization.
Then within the presence of nontradable property and liabilities NWO determines the optimum asset allocation for the investor’s tradable property — an optimization that totally accounts for the investor’s skill to tackle threat.
Transferring by means of time life occurs. The shopper might be fired, the worth of inventory may go up/down, inflation may improve/lower, begin a household, or an uninsured dwelling on the coast might be washed away, and so forth. Critically, as the worth of the particular person’s property relative to the worth of liabilities evolves, the particular person’s monetary well being and skill to tackle threat evolve. In contrast to asset-only MVO, NWO totally captures the investor’s skill to tackle threat.
In a February 2025 Monetary Planning Evaluate article, “Internet Price Optimization,” Kaplan and I focus on greater than 8,000 web price optimizations wherein we various the investor’s human capital and the composition of the investor’s financial stability sheet. As Determine 1 exhibits, after controlling for the investor’s threat tolerance, the quantity of fairness publicity for tradable monetary property elevated with the relative power of the investor’s financial stability sheet. We consider this can be a new, however intuitive consequence.
Determine 1: Optimum Monetary Capital Fairness Degree.
Supply: Idzorek and Kaplan (2025).
In Determine 1, every dot is the common fairness degree of economic capital from 180 web price optimizations similar to totally different combos of human capital and threat tolerance. Because the holistic financial stability sheet strengthens, all else equal, it’s optimum to tackle extra threat.
Conundrum Solved
With NWO there is no such thing as a conundrum. We now not must ask which is extra vital, the shopper’s perspective towards threat or the shopper’s capability to tackle threat.
NWO lets you use the shopper’s threat tolerance because it was meant — to mirror the shopper’s perspective towards threat. Most significantly, NWO concurrently goes nicely past the time horizon proxy of threat capability by totally reflecting the shopper’s skill to tackle threat as captured by a holistic and evolving financial stability sheet.
With the development of web price optimization, the monetary planning trade ought to transfer from MVO to NWO.
References
Idzorek, Thomas M., and Paul D. Kaplan. 2024. Lifetime Monetary Recommendation: A Customized Optimum Multi-Degree Strategy. Charlottesville, VA: Analysis Basis of CFA Institute. https://rpc.cfainstitute.org/websites/default/recordsdata/-/media/paperwork/article/rf-brief/lifetime-financial-advice.pdf
Idzorek, Thomas M., and Paul D. Kaplan. 2025. “Internet Price Optimization.” Monetary Planning Evaluate 8 (1): e1200. https://onlinelibrary.wiley.com/doi/epdf/10.1002/cfp2.1200
Straehl, Philip U., Robert ten Brincke, and Carlos Gutierrez Mangas. 2024. “Ought to Your Inventory Portfolio Contemplate Your Profession?” Morningstar Analysis Paper, June 21.
Wilcox, Jarrod W. 2003. “Harry Markowitz and the Discretionary Wealth Speculation.” Journal of Portfolio Administration 29 (3): 58 – 65. DOI: 10.3905/jpm.2003.319884
Wilcox, Jarrod W., and Frank J. Fabozzi. 2009. “A Discretionary Wealth Strategy for Funding Coverage.” Journal of Portfolio Administration 36 (1): 46-59. DOI: 10.3905/JPM.2009.36.1.046
Wilcox, Jarrod W., Jeffrey E. Horvitz, and Dan DiBartolomeo. 2006. Funding Administration for Taxable Non-public Buyers. Charlottesville, VA: Analysis Basis of CFA Institute.
[1] Examples embrace Wilcox (2003), Wilcox, Horvitz, and di Bartolomeo (2006), and Wilcox and Fabozzi (2009).
