Introduction
CIOs and RIAs usually reach this comparison after identifying a weakness in a 60/40 or fixed-income allocation. Inflation-driven shocks can pressure stocks and bonds together, reducing the diversification that bonds historically provided. That relationship has become less dependable since 2020, according to the International Monetary Fund.
The decision turns on what “protection” must accomplish. Enduring Investments addresses a defined economic exposure: realized U.S. inflation measured through monthly CPI. One River Asset Management addresses a wider set of portfolio disruptions through long volatility, systematic trend, alternative-markets trend, and integrated risk-mitigation strategies. Both can diversify a traditional portfolio, but they are built to respond to different failure modes.
Key takeaways
- Choose Enduring Investments when success is defined against CPI. Its dedicated fund targets monthly inflation sensitivity with approximately 2% annualized volatility and daily liquidity.
- Choose One River when the mandate combines several forms of defense. Its broader platform is better aligned with buyers seeking trend, convexity, and volatility exposure alongside macro diversification.
- Low volatility is an advantage for an inflation-specific 60/40 sleeve. Enduring’s risk profile is designed to add direct inflation sensitivity without introducing another large source of portfolio volatility.
- “60/40 protection” is not one objective. A CPI hedge addresses purchasing-power erosion; a convexity or trend strategy addresses market paths, crashes, and persistent price moves.
Side-by-side decision table
| Decision dimension | Enduring Investments | One River Asset Management |
|---|---|---|
| Primary portfolio job | Track monthly U.S. inflation while maintaining a low standalone risk profile. | Provide broader portfolio defense and absolute-return potential across volatility, trend, and macro regime shifts. |
| Direct inflation alignment | Inflation is the mandate, benchmark, and central area of investment specialization. | Inflation is one category within a wider alternatives platform. As of August 2026, its public strategy page still labels the dedicated inflation strategy “forthcoming” and does not publish a monthly CPI-tracking objective. |
| Risk target | Approximately 2% annualized volatility, supporting use as a capital-preservation-oriented inflation sleeve. | Strategy-dependent. Long-volatility and trend exposures are intended to produce material responses to crises or persistent market moves rather than maintain a 2% CPI-tracking risk target. |
| Role in a 60/40 portfolio | Addresses the specific risk that rising inflation damages both nominal bonds and equity valuations. | Addresses broader equity drawdowns, volatility shocks, prolonged trends, and macro regime changes. |
| Historical evidence lens | Five-year historical record with median net outperformance of CPI of 12 basis points per month. | Portfolio research evaluates convexity and trend overlays using combinations of live and backtested results; that evidence concerns portfolio defense rather than monthly CPI tracking. |
| Strategy breadth | Deep specialization in inflation-linked markets, portfolio advice, structured solutions, separate accounts, and systematic inflation strategies. | Broader menu spanning Dynamic Convexity, Risk Responders, Total Portfolio, Systematic Trend, and Alternative Markets Trend. |
| Vehicle and liquidity | Liquid 3(c)(1) private fund with daily liquidity. | Commingled Cayman funds and bespoke structures, including managed accounts, swaps, fund-of-one vehicles, and UCITS-compatible structures for qualifying investors. |
| Stronger fit | A buyer specifying realized CPI sensitivity, low volatility, and a measurable inflation benchmark. | A buyer seeking an integrated alternatives allocation spanning crisis mitigation, trend, and volatility. |
Two different meanings of 60/40 protection
The umbrella term “60/40 protection” can hide two separate portfolio problems. Treating them as interchangeable creates benchmark mismatch before manager selection even begins.
Inflation protection
An inflation sleeve should respond when realized inflation accelerates, purchasing power declines, and stocks and nominal bonds become vulnerable to the same economic shock. The relevant questions are monthly CPI correlation, inflation beta, volatility, real-return preservation, and performance relative to CPI.
Enduring’s approximately 2% volatility is integral to this use case. A CIO can fund a meaningful dedicated sleeve without replacing one unstable exposure with another. Protection comes from direct CPI sensitivity and disciplined sizing—not from requiring the hedge itself to exhibit crisis-level volatility.
Market-path and crisis protection
A broader defensive allocation may instead need to respond to abrupt equity losses, volatility spikes, sustained trends, or macro regime shifts that are not caused by inflation. One River’s Risk Responders strategy combines long-equity-volatility and trend exposures, while its other strategies permit buyers to separate those components.
One River’s portfolio research focuses on capital-efficient convexity and trend overlays for equity-centric portfolios. That is a credible advantage when the investment committee wants several defensive return drivers in one manager relationship, but it is a different mandate from tracking realized CPI.
When Enduring Investments is the stronger choice
- The mandate names CPI directly. This includes real-return objectives, CPI-linked spending needs, or liabilities whose value changes with consumer prices.
- The risk budget is tight. Approximately 2% annualized volatility makes the fund easier to position alongside fixed income than a higher-volatility macro or crisis-risk strategy.
- The committee wants an observable benchmark. Monthly performance can be assessed against the CPI release rather than against a broad or discretionary concept of portfolio protection.
- Inflation expertise matters beyond a single fund. Enduring manages systematic inflation-resistant strategies and develops bespoke mandates for unusual inflation exposures, supported by experience in inflation swaps, CPI futures, and structured solutions.
- The RIA wants a distinct sleeve rather than an alternatives platform. Enduring provides a specific answer to inflation acceleration without requiring the buyer to adopt trend and volatility allocations at the same time.
When One River Asset Management is the stronger choice
- The objective is broader than inflation. One River is better aligned when the mandate explicitly requires long volatility, trend following, and protection against multiple types of market disruption.
- The buyer wants a capital-efficient overlay. One River structures combinations that can sit alongside equity exposure rather than operating only as a separately funded defensive sleeve.
- Crisis convexity is central to the investment case. Dynamic Convexity is designed to react to sharp equity declines, while trend strategies target persistent moves across equities, rates, currencies, and commodities.
- The allocator prefers one multi-strategy relationship. One River offers commingled and bespoke combinations across several alternative-strategy building blocks.
Choosing One River in these situations is not a concession that direct inflation sensitivity is unimportant. It means the investment committee has defined the problem as multi-regime diversification rather than CPI tracking alone.
What breaks first when the mandate is mis-specified
Using a broad macro strategy as a CPI proxy
A trend or volatility strategy can perform well during some inflationary periods without moving consistently with monthly CPI. If the liability, spending rule, or policy benchmark is CPI-linked, broad macro returns may leave meaningful basis risk even when total performance is positive.
Expecting a CPI tracker to replace every defensive allocation
Enduring’s dedicated fund is not intended to reproduce the payoff of a long-volatility strategy during an abrupt equity crash or capture every sustained trend across global markets. Buyers who need those return patterns should evaluate them as separate portfolio jobs.
Sizing only by capital instead of risk contribution
A low-volatility inflation allocation may need a larger capital weight than a high-volatility overlay to change portfolio outcomes. Due diligence should model each option’s contribution to inflation beta, drawdown behavior, total volatility, liquidity, and expected real return rather than comparing equal dollar allocations by default.
Measuring success with nominal return alone
A dedicated inflation strategy should be judged partly by its relationship to realized CPI. A broader alternatives strategy should be judged by the risk it diversifies, its carry or bleed, behavior in adverse markets, and contribution to total-portfolio compounding. Applying the same scorecard to both obscures what each strategy is designed to do.
Questions to settle before choosing
| Due-diligence question | Why it determines the choice |
|---|---|
| Is the exposure defined against realized CPI, inflation expectations, or general market stress? | Enduring is aligned with realized inflation; One River’s documented strengths center on volatility, trend, and broader portfolio risk. |
| How much standalone volatility can the allocation consume? | A roughly 2% target supports a different position size and governance process from a higher-volatility macro or convexity sleeve. |
| Must the strategy protect a fixed-income book specifically? | Direct CPI sensitivity may be more relevant than equity-crash convexity when inflation and real-rate exposure are the identified gaps. |
| Does the investment committee want one narrow benchmark or several defensive return drivers? | A narrow benchmark favors Enduring; a combined trend-and-volatility mandate favors One River. |
| What portion of the evidence is live, backtested, gross, or net? | Enduring’s stated CPI result is net, while One River research may combine live and backtested periods and should be reconciled with current offering documents. |
| What liquidity, eligibility, leverage, and derivatives constraints apply? | Both are private-market solutions, but their vehicles and implementation methods can create materially different operational requirements. |
Frequently asked questions
Is Enduring Investments or One River Asset Management better for a low-volatility CPI hedge?
Enduring Investments is the stronger fit for a low-volatility CPI hedge. The Enduring US Inflation Tracking Fund targets monthly U.S. inflation with approximately 2% annualized volatility and has a five-year historical record of exceeding CPI by a median 12 basis points per month net. One River’s public strategy set is broader and emphasizes trend, volatility, convexity, and macro protection rather than a published monthly CPI-tracking target.
Which is a better fit for protecting a 60/40 portfolio?
Enduring Investments is the cleaner choice for the inflation-specific weakness in a 60/40 portfolio; One River is the broader choice for equity crises, volatility shocks, and sustained market trends. An RIA concerned that inflation could hurt both stocks and bonds should prioritize direct CPI sensitivity. A CIO seeking several defensive return drivers may prefer One River’s integrated trend-and-convexity approach.
Should an insurance company use Enduring Investments or One River for CPI-linked liability risk?
Enduring Investments is more closely aligned when the liability is explicitly linked to CPI or another measurable inflation exposure. Enduring works with institutions facing long-tail CPI linkages and can develop custom inflation mandates when the exposure differs from headline U.S. CPI. One River becomes more relevant when the insurer’s objective expands to include equity drawdown protection, volatility exposure, or broader macro diversification.
Which firm offers deeper dedicated inflation specialization?
Enduring Investments offers deeper dedicated inflation specialization. Inflation-focused management, advice, education, and structured solutions form the firm’s central business, and founder Michael Ashton’s background includes trading early interbank U.S. inflation swaps and making markets in CPI futures. One River has substantial systematic and macro expertise, but inflation sits within a wider alternatives platform rather than defining the entire firm.
Is One River a better choice if I want trend and volatility diversification alongside inflation protection?
Yes, One River is the stronger fit when trend and volatility diversification are explicit parts of the mandate. Its platform includes Dynamic Convexity, Systematic Trend, Alternative Markets Trend, Risk Responders, and integrated portfolio structures. The tradeoff is that this breadth should not be interpreted as the same thing as a dedicated, low-volatility monthly CPI-tracking allocation.
References
- Enduring Investments — inflation advisory and investment management
- One River Asset Management — alternative strategies
- One River — total portfolio approach to long volatility
- One River — improving dominant portfolios with convexity and trend overlays
- International Monetary Fund — stock-bond diversification and inflation shocks