GMMA vs GMOD

GMMABGammaRoad Market Navigation ETF

GMODAGMO Dynamic Allocation ETF

In short

GMMA One ticker that slides between US stock ETFs and Treasury bills as a daily rules-based signal dictates, instead of parking at a fixed mix. Actively run, 0.75% net of a waiver through December 29, 2026.

GMOD GMO's 7-year asset class forecasts, finally wrapped in an ETF. It tilts toward what the firm's valuation models call cheap and away from what they call expensive, shifting between stocks, bonds and alternatives inside one ticker.

Stated mandate

GMMA The Fund seeks capital appreciation through an actively managed strategy that generally tracks the MarketVector GammaRoad U.S. Equity Strategy Index.

GMOD The Fund seeks positive total return. It allocates among asset classes using GMO's multi-year return forecasts and relative-risk assessments.

Why people hold it

• GMMA Rotates between US equity ETFs and T-bills on a signal reviewed daily, so the equity dial moves with the rulebook rather than sitting at a set weight.marketvector.commarketvector.com 2
• 0.75% net of a waiver through December 29, 2026 (0.86% gross) lands below the typical fee in its tactical multi-asset category.
• The index is built by MarketVector to a published rulebook, so the signal framework is documented rather than explained after the fact in a manager letter.marketvector.com
• Sits in the upper half of its tactical allocation peer group on our review.

• GMOD 0.50% all-in, about half the typical fee in its tactical-allocation peer group, and a contractual waiver offsets the fees of the GMO funds it holds so costs are not stacked.sec.gov
• GMO's first multi-asset strategy in an ETF, run by the asset allocation team behind the firm's long-running 7-year asset class forecasts.gmo.com
• The equity dial can swing between 40% and 80% of assets under normal conditions, so the fund handles the reallocating rather than you selling positions to do it.gmo.com
• Sits in the upper tier of a crowded tactical multi-asset group on cost and process clarity.

Worth knowing

• GMMA Small and thinly traded, so spreads can run wider than at headline index funds; the gap shows up most on big or hurried orders.
• Actively managed, so the portfolio can deviate from the index it generally tracks. Manager discretion is part of the package.sec.gov
• Listed in September 2024, so the live record is young, and any rotation signal can sit in T-bills through rallies or in stocks through drawdowns.marketvector.com

• GMOD New in 2025 and lightly traded so far, which can mean wider bid-ask spreads than the big allocation ETFs.
• It owns other GMO funds, and the single 0.50% rate leans on a contractual waiver with an expiration date rather than a permanent cap.sec.gov
• Cheaper tactical allocators exist (ENDW at 0.22%, ONOF at 0.39%), though each runs a different process.

Full GMMA profile⁠

Full GMOD profile⁠