U-GTAA Agg3 Overview

Results over the full published history, 1980 to September 2026. Net of trading friction.
CAGR12.4%
Maximum drawdown-20.1%
MAR ratio0.62
History46 years (561 months)

U-GTAA Agg3 is a UCITS version of GTAA Agg3, the concentrated three-slot version of Meb Faber's Global Tactical Asset Allocation, for investors outside the United States who buy UCITS funds rather than US-listed ETFs.

The rules are the original's: rank the asset classes each month by the plain average of their 1, 3, 6 and 12-month returns, buy the top three at a third of the portfolio each, and send any pick that sits below its 10-month moving average to cash. The portfolio is rebuilt fresh every month.

The One Change: International Government Bonds

GTAA Agg3 ranks thirteen asset classes. One of them, international government bonds held unhedged (BWX in the US version), has no UCITS fund that holds the same exposure, so U-GTAA Agg3 leaves it out and ranks the remaining twelve. Nothing else changes.

That one change matters less than it might sound. Over the full record GTAA Agg3 held international government bonds in 37 of 561 months, most recently in May 2025, and only those months, plus the slots that would otherwise have been filled differently, change. Leaving the asset out happened to help slightly over this history, but that is a feature of this particular stretch of markets, not a reason to expect it to help going forward.

The UCITS Funds

RoleFundTicker (London, USD)GBP lineISIN
U.S. large cap valueSPDR MSCI USA Value UCITS ETF (Acc)USVLUVALIE00BSPLC520
U.S. momentumiShares Edge MSCI USA Momentum Factor UCITS ETF (Acc)IUMOIUMFIE00BD1F4N50
U.S. small cap (Russell 2000)SPDR Russell 2000 US Small Cap UCITS ETF (Acc)R2USR2SCIE00BJ38QD84
U.S. small cap valueSPDR MSCI USA Small Cap Value Weighted UCITS ETF (Acc)USSCnoneIE00BSPLC413
Developed markets ex USXtrackers MSCI World ex USA UCITS ETF 1CEXUSXMWXIE0006WW1TQ4
Emerging marketsiShares MSCI EM UCITS ETF (Acc)IEMASEMAIE00B4L5YC18
U.S. real estateiShares US Property Yield UCITS ETF (Dist)IDUPIUSPIE00B1FZSF77
CommoditiesInvesco Bloomberg Commodity UCITS ETF (Acc)CMODCMOPIE00BD6FTQ80
GoldiShares Physical Gold ETCIGLNSGLNIE00B4ND3602
Investment grade bondsiShares $ Corp Bond UCITS ETF (Acc)LQDAnoneIE00BYXYYJ35
Long TreasuriesiShares $ Treasury Bond 20+yr UCITS ETF (Acc)DTLAnoneIE00BFM6TC58
Intermediate TreasuriesiShares $ Treasury Bond 7-10yr UCITS ETF (Acc)CBU0noneIE00B3VWN518
Short Treasuries (T-bills)iShares $ Treasury Bond 0-1yr UCITS ETF (Acc)IB01noneIE00BGSF1X88

How Closely the Funds Match

  • Same or near-identical index. For most positions the UCITS fund tracks the same index, or the same index family, as the US fund it replaces.
  • U.S. large cap value is held through an MSCI USA value-weighted fund, a different construction from the Russell 1000 Value index the US fund tracks, so expect some difference in the months it is held.
  • U.S. momentum is held through the MSCI USA Momentum fund in place of the S&P 500 Momentum fund; both select large caps by recent strength but use different rules, so they will not move identically.
  • U.S. small cap value is held through a value-weighted small cap fund in place of the CRSP small cap value index, the loosest of the equity matches.
  • Developed markets ex US is held through an MSCI World ex USA fund, which holds large and mid caps only and leaves out South Korea; the US fund also holds small caps and Korea. The UCITS fund launched in 2024.
  • U.S. real estate is the loosest match: the UCITS fund screens U.S. REITs for dividend yield and only comes in a distributing share class.
  • Commodities are held through a Bloomberg Commodity index fund in place of the US fund's optimum-yield index, so returns will differ somewhat.
  • Cash is held as a US T-bill fund in US dollars.

Performance Highlights

January 1980 through September 2026, net of trading friction:

CAGRMax DrawdownUlcer IndexUPI
U-GTAA Agg3+12.4%-20.1%6.351.29
GTAA Agg3+12.0%-20.1%6.421.21
S&P 500+12.0%-51.0%12.720.61

The Ulcer Index measures how deep and how long drawdowns were, not just the single worst one: lower is better. UPI (Ulcer Performance Index) is return above T-bills per unit of Ulcer Index: higher is better.

Notes for Investors Outside the US

  • Results are in US dollars. The strategy is calculated on the history of the equivalent US funds, in US dollars. If you measure your portfolio in pounds, euros or another currency, your results will also move with the exchange rate.
  • Why UCITS funds. Irish-domiciled UCITS funds are the standard way for non-US investors to hold US markets. They often receive US dividends at a lower withholding rate than a non-US investor holding US-listed ETFs directly would, and they are not US assets for US estate tax purposes. Rules vary by country, so check with a tax adviser where you live.
  • Gold is held as an ETC. UCITS rules do not allow a fund that holds only gold, so gold is held through the iShares Physical Gold ETC, a security backed by physical gold. It is not a UCITS fund, but it is UCITS eligible and widely available to investors in the UK, Europe and elsewhere.
  • Listings. The tickers above are the London Stock Exchange USD lines unless noted. Most of the funds also trade in London in pounds and on European exchanges in euros, under the same ISIN, which is the surest way to find the right fund at any broker.

Who It's For

U-GTAA Agg3 is for investors outside the US who want a broad, rules-based global trend strategy that concentrates in the three strongest asset classes, built from UCITS funds and a physical gold ETC.


Past performance, including backtested results, is not indicative of future results. Backtested performance is hypothetical, does not reflect actual trading, and benefits from hindsight in the selection of strategy rules. U-GTAA Agg3 is calculated on the history of the equivalent US-listed funds; the UCITS funds track the same or closely matching indexes but their returns will differ, including from fees, tax treatment and currency. Portions of the long-term history rely on reconstructed proxy data for funds that did not exist for the full period. Investors should carefully consider their risk tolerance and consult with a financial advisor.

For the latest details, visit www.DualMomentumSystems.com

Performance in detail

Growth of $10,000 (log scale)

Drawdown from previous high

Calendar-year returns

Selected range Jan 1980 to Sep 2026

PortfolioCAGRMax DDUlcerUPISortinoMAR
U-GTAA Agg312.4%-20.1%6.351.291.690.62
GTAA Agg312.0%-20.1%6.421.211.630.60
S&P 50012.0%-51.0%12.720.611.300.24
60/4010.0%-32.3%6.120.951.720.31

What the record shows

From Jan 1980 through Sep 2026, U-GTAA Agg3 compounded at 12.4% a year after trading costs. $10,000 invested at the start grew to about $2,362,590.

That is 0.4 points a year more than GTAA Agg3, its default benchmark, over the same months, and it out-returned GTAA Agg3 in 4 of the 5 decades in the record.

Its deepest decline was 20.1%, from a peak in Jan 1980 to a low in Mar 1980, and it was back to its old high by Sep 1980.

Return is only half the picture. The Ulcer Performance Index measures return against the depth and length of drawdowns, and on it U-GTAA Agg3 scores 1.29, ahead of GTAA Agg3 at 1.21.

In the 195 months the S&P 500 fell, U-GTAA Agg3 still made money in 35% of them.

Since 2000

The modern half of the record, with the dot-com bust, 2008, the long zero-rate decade and the 2022 rate shock all inside it.

Jan 2000 to Sep 2026CAGRMax DDUlcerUPISortinoMAR
U-GTAA Agg311.5%-15.8%5.951.621.690.73
GTAA Agg311.2%-15.8%6.021.551.640.71
S&P 5008.1%-51.0%15.890.390.880.16
60/406.6%-32.3%7.620.621.110.20

Return by decade

Annual return1980s1990s2000s2010s2020s*
U-GTAA Agg3+14.5%+12.7%+16.6%+5.0%+14.0%
GTAA Agg3+14.5%+11.8%+16.2%+5.0%+13.4%
S&P 500+17.0%+18.1%-1.0%+12.9%+15.3%
60/40+15.5%+14.0%+2.1%+9.4%+9.4%

* Partial decade, annualized over the months available.

Through the hard stretches

Total return over each period, start of the first month to the end of the last.

PeriodU-MF-GTAA3MF-GTAA3S&P 50060/40
1987 crashSep 1987 to Nov 1987-16.4%-16.4%-29.8%-17.7%
Dot-com bear marketSep 2000 to Sep 2002+5.3%+4.1%-44.8%-23.5%
Global financial crisisNov 2007 to Feb 2009+4.5%+3.1%-51.0%-32.3%
COVID crashFeb 2020 to Mar 2020-0.9%-0.9%-19.6%-11.9%
2022 rate shockJan 2022 to Dec 2022-3.4%-3.4%-18.2%-15.9%

How it behaves month to month

Since Jan 1980Worst 12 monthsPositive monthsPositive when S&P 500 fellCorrelation to S&P 500
U-GTAA Agg3-18.3%62%35%0.46
GTAA Agg3-18.3%62%34%0.46
60/40-27.5%67%10%0.98

Every figure is net of trading costs and computed from the same monthly data as the rest of the site, over the months all the portfolios shown have in common (Jan 1980 to Sep 2026). Returns before an ETF's launch come from a matching index, as explained in where the data comes from. Backtests are hypothetical and are not a promise of future results.