When to Use Time-Weighted Return (TWR) vs. Money-Weighted Return (MWR)

Sean P. Gilligan
Author
December 29, 2020
15 min
When to Use Time-Weighted Return (TWR) vs. Money-Weighted Return (MWR)

There are two types of returns investment managers use to report the performance of their strategies: Time-Weighted Returns (“TWR”) and Money-Weighted Returns (“MWR”). The most common MWR is the Internal Rate of Return (“IRR”). Here we take a look at both TWR and MWR to help you understand when each method should be used and why.

The key difference between the two methods is that:

  • Time-Weighted Returns REMOVE the effect of the timing and amount of external cash flows.
  • Money-Weighted Returns INCLUDE the effect of the timing and amount of external cash flows.

Because of this, money-weighted returns represent the actual return received by the investor, while time-weighted returns represent the return achieved by the investment manager after removing the effect of external cash flows.

But when is it appropriate to use one over the other? Because MWRs reflect the investor’s actual returns, it may seem like the best method to use in all situations. However, if the purpose of reviewing the performance is to evaluate the portfolio manager’s discretionary management, we do not want decisions made by the investor to affect the results. The most appropriate methodology to use to evaluate the portfolio manager depends on who controls the external cash flows (contributions and withdrawals) from the portfolio.

Investor-Driven Cash Flows

When the timing and amount of external cash flows are controlled by the investor, investor-driven decisions impact the return. To present returns that allow investors to evaluate a manager’s discretionary management, TWR should be utilized to remove the effect of these investor-driven decisions. Because the effects of cash flows are removed, a TWR doesn’t penalize or benefit a portfolio manager’s performance for contributions or withdrawals that the manager did not control.

Investment Manager-Driven Cash Flows

When the investment manager does have control over the timing and amount of external cash flows (e.g., private equity funds where the investment manager has control over capital calls and distributions), their effects should be included in the evaluation of the manager’s performance. An MWR, which includes the effect of timing and amount of external cash flows, would therefore appropriately penalize or benefit a portfolio manager for contribution and withdrawal decisions that were part of their discretionary management.

External Cash Flow Impact on Returns

Without external cash flows, TWR and MWR are equal. When external cash flows (and volatility) are present, the results will differ.

The following are examples of how the MWR and TWR will differ under different market scenarios:

  1. If a contribution is made and then the portfolio has subsequent performance that:
    • SHIFTS POSITIVELY – MWR > TWR (investor added money just before the upswing)
    • SHIFTS NEGATIVELY – TWR > MWR (investor added money just before the decline)
    • REMAINS STEADY – TWR = MWR (investor added money during a period without volatility)
  2. If a distribution is made and then the portfolio has subsequent performance that:
    • SHIFTS POSITIVELY – TWR > MWR (investor withdrew money just before the upswing)
    • SHIFTS NEGATIVELY – MWR > TWR (investor withdrew money just before the decline)
    • REMAINS STEADY – MWR = TWR (investor withdrew money during a period without volatility)

To help visualize how this works, below are three examples. For the sake of simplicity, we assume the portfolio perfectly replicates the index. The line on the graphs demonstrates the index return stream for the performance period while the filled in area represents the amount of capital invested during each segment of the period. Since TWR removes the effect of the external cash flows, the TWR will approximately equal the index return while the MWR will be impacted by the amount of capital invested for each segment of the performance period.

Example 1: A portfolio with a beginning value of $100k has a steady return of 10% without any volatility for the full period (scenarios with and without external cash flows):

Steady return - no external cash flows.
No External Cash Flows and no volatility:
TWR = 10% and MWR = 10%
Steady return - large external contribution.
$50k ADDED at Mid-Point and no volatility:
TWR = 10% and MWR = 10%
Steady return - large external distribution.
$50k REMOVED at Mid-Point with no volatility:
TWR = 10% and MWR = 10%

The TWR and MWR is equal for all of these scenarios because there is no volatility. With a steady return stream, there is no market timing that would make external cash flows cause a difference between the TWR and MWR.

Example 2: A portfolio with a beginning value of $100k has a 10% increase, but subsequently declines to end the period at the same level at which it began.

Positive return with subsequent loss - no external cash flows
No External Cash Flows:
TWR = 0% and MWR = 0%
Positive return with subsequent loss - large external contribution
= $50k ADDED at High Point:
TWR = 0% and MWR = -3.63%
Positive return with subsequent loss - large external cash distribution
$50k REMOVED at High Point:
TWR = 0% and MWR = 6.04%

The TWR is 0% for all scenarios because the strategy lost all of its initial gains to end up back at the starting point.

The MWR is negative when adding money at the high point because in this scenario the capital base is smaller while the strategy is performing positively and larger when the strategy is performing negatively.

The MWR is positive when removing money at the high point because in this scenario the capital base is larger while the strategy is performing positively and smaller when the strategy is performing negatively.

Example 3: A portfolio with a beginning value of $100k has a 10% decrease, but subsequently increases to end the period at the same level at which it began.

Negative return with subsequent gain - no external cash flows.
No External Cash Flows:
TWR = 0% and MWR = 0%
$50k ADDED at Low Point:
TWR = 0% and MWR = 3.71%
$50k REMOVED at Low Point:
TWR = 0% and MWR = -5.91%

The TWR is 0% for all scenarios because the strategy gained back all of its initial losses to end up back at the starting point.

The MWR is positive when adding money at the low point because in this scenario the capital base is smaller while the strategy is performing negatively and larger when the strategy is performing positively.

The MWR is negative when removing money at the high point because in this scenario the capital base is larger while the strategy is performing negatively and smaller when the strategy is performing positively.

Criteria to Determine When MWR is Appropriate

Ultimately, investment managers should be evaluated based on TWR unless specific criteria are met, in which case MWR is more appropriate. The criteria[1] for using MWR includes:

The investment manager has control over the timing and amount of external cash flows and the investment vehicle has at least one of the following characteristics:

  • Closed-end
  • Fixed life
  • Fixed commitment
  • Illiquid investments as a significant part of the investment strategy

MWR vs TWR for GIPS

The use of money-weighted returns in GIPS Reports instead of time-weighted returns has broadened under the 2020 edition of the Global Investment Performance Standards (“GIPS”). All firms can show MWRs in addition to TWRs if they wish to do so; however, if a firm wishes to replace its TWR with MWR, the criteria listed in the prior section must be met. For more information on these requirements, please see Question 10 of Longs Peak’s GIPS Compliance FAQs.

For more information on how to present performance information in compliance with the GIPS standards, see our recent article on updating GIPS reports to comply with the 2020 edition of the GIPS standards.

If you have questions about calculating investment performance or GIPS compliance, please contact us or email Sean Gilligan at sean@longspeakadvisory.com.

[1] Global Investment Performance Standards (GIPS®) – For Firms, Fundamentals of GIPS Compliance, Provision 1.A.35, pages 5-6.

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The Performance Measurement, Attribution & Risk (PMAR) Conference is always a highlight for investment performance professionals—and this year’s event did not disappoint. With a packed agenda spanning everything from economic uncertainty and automation to evolving training needs and private market complexities, PMAR 2025 gave attendees plenty to think about.

Here are some of our key takeaways from this year’s event:

Women in Performance Measurement (WiPM)

Although not officially a part of PMAR, WiPM often schedules its annual in-person gathering during the same week to take advantage of the broader industry presence at the event. This year’s in-person gathering, united female professionals from across the country for a full day of connection, learning, and mentorship. The agenda struck a thoughtful balance between professional development and personal connection, with standout sessions on AI and machine learning, resume building, and insights from the WiPM mentoring program. A consistent favorite among attendees is the interactive format—discussions are engaging, and the support among members is truly energizing. The day concluded with a cocktail reception and dinner, reinforcing the group’s strong sense of community and its ongoing commitment to advancing women in the performance measurement profession.

If you’re not yet a member and are interested in joining the community, find WiPM here on LinkedIn.

Uncertainty, Not Risk, is Driving Market Volatility

John Longo, Ph.D., Rutgers Business School kicked off the conference with a deep dive into the global economy, and his message was clear: today’s markets are more uncertain than risky. Tariffs, political volatility, and unconventional strategies—like the idea of purchasing Greenland—are reshaping global trade and investment decisions. His suggestion? Investors may want to look beyond U.S. borders and consider assets like gold or emerging markets as a hedge.

Longo also highlighted the looming national debt problem and inflationary effects of protectionist policies. For performance professionals, the implication is clear: macro-level policy choices are creating noise that can obscure traditional risk metrics. Understanding the difference between risk and uncertainty is more important than ever.

The Future of Training: Customized, Continuous, and Collaborative

In the “Developing Staff for Success” session, Frances Barney, CFA (former head of investment performance and risk analysis for BNY Mellon) and our very own Jocelyn Gilligan, CFA, CIPM explored the evolving nature of training in our field. The key message: cookie-cutter training doesn't cut it anymore. With increasing regulatory complexity and rapidly advancing technology, firms must invest in flexible, personalized learning programs.

Whether it's improving communication skills, building tech proficiency, or embedding a culture of curiosity, the session emphasized that training must be more than a check-the-box activity. Ongoing mentorship, cross-training, and embracing neurodiversity in learning styles are all part of building high-performing, engaged teams.

AI is Here—But It Needs a Human Co-Pilot

Several sessions explored the growing role of AI and automation in performance and reporting. The consensus? AI holds immense promise, but without strong data governance and human oversight, it’s not a silver bullet. From hallucinations in generative models to the ethical challenges of data usage, AI introduces new risks even as it streamlines workflows.

Use cases presented ranged from anomaly detection and report generation to client communication enhancements and predictive exception handling. But again and again, speakers emphasized: AI should augment, not replace, human expertise.

Private Markets Require Purpose-Built Tools

Private equity, private credit, real estate, and hedge funds remain among the trickiest asset classes to measure. Whether debating IRR vs. TWR, handling data lags, or selecting appropriate benchmarks, this year's sessions highlighted just how much nuance is involved in getting private market reporting right.

One particularly compelling idea: using replicating portfolios of public assets to assess the risk and performance of illiquid investments. This approach offers more transparency and a better sense of underlying exposures, especially in the absence of timely valuations.

Shorting and Leverage Complicate Performance Attribution

Calculating performance in long/short portfolios isn’t straightforward—and using absolute values can create misleading results. A session on this topic broke down the mechanics of short selling and explained why contribution-based return attribution is essential for accurate reporting.

The key insight: portfolio-level returns can fall outside the range of individual asset returns, especially in leveraged portfolios. Understanding the directional nature of each position is crucial for both internal attribution and external communication.

The SEC is Watching—Are You Ready?

Compliance was another hot topic, especially in light of recent enforcement actions under the SEC Marketing Rule. From misuse of hypothetical performance to sloppy use of testimonials, the panelists shared hard-earned lessons and emphasized the importance of documentation. This panel was moderated by Longs Peak’s Matt Deatherage, CFA, CIPM and included Lance Dial, of K&L Gates along with Thayne Gould from Vigilant.

FAQs have helped clarify gray areas (especially around extracted performance and proximity of net vs. gross returns), but more guidance is expected—particularly on model fees and performance portability. If you're not already documenting every performance claim, now is the time to start.

“Phantom Alpha” Is Real—And Preventable

David Spaulding of TSG, closed the conference with a deep dive into benchmark construction and the potential for “phantom alpha.” Even small differences in rebalancing frequency between portfolios and their benchmarks can create misleading outperformance. His recommendation? Either sync your rebalancing schedules or clearly disclose the differences.

This session served as a great reminder that even small implementation details can significantly impact reported performance—and that transparency is essential to maintaining trust.

Final Thoughts

From automation to attribution, PMAR 2025 showcased the depth and complexity of our field. If there’s one overarching takeaway, it’s that while tools and techniques continue to evolve, the core principles—transparency, accuracy, and accountability—remain as important a sever.

Did you attend PMAR this year? We’d love to hear your biggest takeaways. Reach out to us at hello@longspeakadvisory.com or drop us a note on LinkedIn!

ColoradoBiz Names Longs Peak’s Jocelyn Gilligan, CFA, CIPM as a Gen XYZ Top Young Professional
Longs Peak is pleased to announce that Partner and Co-Founder, Jocelyn Gilligan has been named a GenXYZ Top Young Professional by ColoradoBiz Magazine. As ColoradoBiz states, “They’re uncommon achievers, whether as entrepreneurs, CEOs, nonprofit leaders, visionaries critical to their companies’ success or, in some cases, all of those roles. This year’s Top 25 Young Professionals figure to continue making a difference professionally and in their communities for years to come.”
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As ColoradoBiz states, “They’re uncommon achievers, whether as entrepreneurs, CEOs, nonprofit leaders, visionaries critical to their companies’ success or, in some cases, all of those roles. This year’s Top 25 Young Professionals figure to continue making a difference professionally and in their communities for years to come.”

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Jocelyn is a voting member of the PTO at her children’s school and a member of Women in Investment Performance Measurement, a group recently founded to support women in the investment performance industry.

About ColoradoBiz’s Top 25 Young Professionals

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About Longs Peak

Longs Peak is a purpose and values-driven company. It is our mission to make investment performance information more transparent and reliable—empowering investors to make better, more informed investment decisions.

At the onset, we were looking to help smaller investment managers by giving them access to professional performance experts and tools typically only available to very large firms. We know that our work enables emerging managers to compete with the big guys and helps facilitate their growth. We strive to be our clients’ most valued outsource partner and to be known for our exceptional client service. We know that providing exceptional client service means that we must first create a culture that lives by the ideals we are trying to create for our clients. A place where incredibly talented individuals are empowered to put their best work into the hands of clients that truly value what we do. As a firm, we recognize that our greatest asset is people – both those we work with and those we work for. We continue to evolve into something that represents the needs of both of these groups and hope someday a GIPS Report is provided to every prospective investor in the world.

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The investment management industry has spent significant time grappling with the SEC’s Marketing Rule and the question of whether gross-of-fee returns can be presented without corresponding net-of-fee returns in certain cases. Many firms have invested resources in trying to allocate fees to individual securities and sectors in an effort to comply. However, the SEC has now issued two FAQs (March 19, 2025) that provide much appreciated clarity on extracted performance and portfolio characteristics. The key takeaway? It is possible to present gross-of-fee returns without net-of-fee returns—if certain conditions are met.
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The investment management industry has spent significant time grappling with the SEC’s Marketing Rule and the question of whether gross-of-fee returns can be presented without corresponding net-of-fee returns in certain cases. Many firms have invested resources in trying to allocate fees to individual securities and sectors in an effort to comply. However, the SEC has now issued two FAQs (March 19, 2025) that provide much appreciated clarity on extracted performance and portfolio characteristics. The key takeaway? It is possible to present gross-of-fee returns without net-of-fee returns—if certain conditions are met.

Extracted Performance: Gross Returns Can Stand Alone Under Specific Criteria

Investment advisers often present the performance of a single investment or a subset of a portfolio (“extracted performance”) in marketing materials. Historically, the SEC required both gross and net performance to be shown for such extracts. The new guidance provides a pathway for firms to display only gross-of-fee extracted performance, provided the following conditions are met:

  1. The extracted performance must be clearly identified as gross performance.
  2. The advertisement must also present the total portfolio’s gross and net performance in a manner consistent with SEC requirements.
  3. The total portfolio’s performance must be given at least equal prominence to, and facilitate comparison with, the extracted performance.
  4. The total portfolio’s performance must be calculated over a period that includes the entire period of the extracted performance.

If these conditions are satisfied, the SEC staff has indicated they will not recommend enforcement action, even if the extracted performance is presented without corresponding net returns. This is a notable shift, as it allows firms to avoid the complex and often impractical task of allocating fees at the investment or sector level.

Portfolio and Investment Characteristics: Net-of-Fee Not Always Required

Another common industry question has been whether certain portfolio or investment characteristics—such as yield, volatility, Sharpe ratio, sector returns, or attribution analysis—constitute “performance” under the marketing rule, and if so, whether they must be presented net of fees.

The SEC’s latest guidance acknowledges that calculating these characteristics net of fees can be difficult and, in some cases, may lead to misleading results. As a result, the staff has confirmed that firms may present gross characteristics alone, without net characteristics, if they meet the following criteria:

  1. The characteristic must be clearly identified as calculated without the deduction of fees and expenses.
  2. The advertisement must also present the total portfolio’s gross and net performance in a manner consistent with SEC requirements.
  3. The total portfolio’s performance must be given at least equal prominence to, and facilitate comparison with, the gross characteristic.
  4. The total portfolio’s performance must be calculated over a period that includes the entire period of the characteristic being presented.

As with extracted performance, these conditions help ensure that the presentation is not misleading, reducing the risk of enforcement action.

Bottom Line: A Practical Path Forward

This updated SEC guidance provides much-needed flexibility for investment managers, allowing for the presentation of gross-of-fee returns in a compliant manner. Firms that clearly disclose their approach and follow the specified conditions can reduce compliance burdens while still meeting investor protection standards. While this does not eliminate all complexities of the Marketing Rule, it does offer a practical solution that allows for more straightforward and meaningful performance reporting.

For firms navigating these changes, ensuring clear disclosures and maintaining compliance with the general prohibitions of the rule remains critical. Those who align their advertising materials with these guidelines can now confidently use gross-of-fee performance in a way that is both transparent and in compliance with regulatory requirements.

Questions?

If you have questions about calculating or presenting investment performance in a manner that complies with regulatory requirements or industry best practices, we would love to talk to you. Please feel free to email us at hello@longspeakadvisory.com.