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Mama Bear Portfolio

Mama Bear Portfolio is a tactical asset allocation strategy reviewed on a monthly cadence. Its hypothetical backtest runs through 2026-08-19. BestFolio supplies the public rule or approach and backtest context; current signals, allocations, and paid interactive data remain restricted to Pro access. The recorded 2018 publication or construction boundary separates pre-publication simulation from later market observations under fixed rules; all returns remain hypothetical. Users review each scheduled signal and place any resulting trades in their own brokerage. BestFolio does not execute trades or provide personalized investment advice.

Cadence
Monthly
Backtest data through
2026-08-19
History boundary
The recorded 2018 publication or construction boundary separates pre-publication simulation from later market observations under fixed rules; all returns remain hypothetical.
Rule / approach
1. Rank all 9 ETFs (VONE, VIOO, VEA, VWO, VNQ, PDBC, IAU, VGLT, SHV) by 5-month total return 2. Select the top 3 ETFs by return 3. Allocate 33.33% to each of the 3 selected ETFs
BestFolio supplies
the public rule or approach and backtest context; current signals, allocations, and paid interactive data remain restricted to Pro access
Customer action
Review each scheduled signal and place any required trades in your own brokerage; BestFolio does not execute orders.
Costs and exclusions
net of a modeled one-way transaction cost (10 bps, scaled up to 3x under stress); taxes, fund-expense drift, or market impact are not modeled
Freshness
The latest available backtest ends 2026-08-19. A run timestamp is not exposed here, so no stronger freshness claim is made.
Next expected action
First trading day of September; scheduled 2026-09-01 at 09:30 ET. Review the published signal before placing any trade.

Mama Bear Portfolio at a glance

Mama Bear Portfolio is a tactical asset allocation (TAA) strategy by Brian Livingston across US Equity, US Small Cap, International Equity, Emerging Markets, rebalanced monthly. Backtested 1985-07-31 to 2026-08-19 (40.9 years): 11.1% CAGR, 0.94 Sharpe, -33.5% max drawdown, 12.2% volatility.

Type
Tactical (TAA)
Author
Brian Livingston
Rebalancing
Monthly
Risk
Conservative
Period
1985-07-31 to 2026-08-19
CAGR
11.1%
Sharpe
0.94
Max Drawdown
-33.5%
Volatility
12.2%

Mama Bear Portfolio Tactical Asset Allocation Strategy

The Mama Bear Portfolio is one of two 'Muscular Portfolios' designed by Brian Livingston. It uses a 9-ETF universe and straightforward 5-month momentum to select the top 3 holdings in equal weight (33.33% each). There is no explicit defensive trigger; instead, the universe includes defensive assets (long-term treasuries, short-term treasuries, gold) that naturally rotate into the top 3 during market downturns.

Mama Bear Portfolio: frequently asked questions

What is Mama Bear Portfolio?
Momentum rotation across 9 diversified ETFs spanning US large/small cap, international, EM, REITs, commodities, gold, and bonds. Holds the top 3 by 5-month return, equal-weighted. Natural defensive rotation. Monthly rebalancing.
Who created the Mama Bear Portfolio strategy?
Mama Bear Portfolio was developed by Brian Livingston. It is based on Livingston, B. Muscular Portfolios. BenBella Books (2018)..
What is the historical return and maximum drawdown of Mama Bear Portfolio?
Backtested from 1985-07-31 to 2026-08-19, Mama Bear Portfolio returned 11.1% CAGR with a -33.5% maximum drawdown and a Sharpe ratio of 0.94. Past performance does not guarantee future results.
How often is Mama Bear Portfolio rebalanced?
Mama Bear Portfolio is rebalanced monthly. BestFolio publishes the updated allocation signal each period.
Is Mama Bear Portfolio a tactical asset allocation strategy?
Yes. Mama Bear Portfolio is a tactical asset allocation (TAA) strategy: it adjusts its holdings based on market signals each period rather than holding a fixed allocation.

Backtest Performance (1985-07-31 to 2026-08-19)

MetricMama Bear Portfolio
CAGR11.1%
Max Drawdown-33.5%
Sharpe0.94
Sortino1.30
Volatility12.2%
Calmar0.33
Total Return7365.1%
Backtest Period40.9 years

Strategy Details

Type
Tactical (TAA)
Rebalancing
monthly
Risk Level
conservative
Variants
1
Author
Brian Livingston
Source
Livingston, B. Muscular Portfolios. BenBella Books (2018).

Asset Classes

  • US Equity
  • US Small Cap
  • International Equity
  • Emerging Markets
  • REITs
  • Commodities
  • Gold
  • Long-Term Treasuries
  • Short-Term Treasuries

Further reading

New to this approach? Read what tactical asset allocation is and how it works.

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