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Kryptera

Quant Research Systems Builder Pine Script → Python/vectorbt Backtesting • Optimization • Research Dashboards

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The Portfolio That Was Built Not to Be Surprised

20 years of Ray Dalio’s All Weather idea, tested with real costs. It was a smooth ride for most of the trip, until the one year it wasn’t.

9 min read3 days ago

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This is not Ray Dalio’s actual All Weather portfolio. It is a simplified version I built myself, using 5 ETFs and rough weights inspired by the idea. Please don’t read the results as a verdict on his real strategy.

The question behind the portfolio

Most portfolios are built around a forecast: stocks will go up, or rates will fall, or gold will shine. The All Weather idea starts from the opposite admission, that you don’t know what comes next.

So instead of betting on one future, you hold something for each of them. Growth surprises, growth disappointments, inflation spikes, and inflation collapses each get an asset class that should do well in that world. The portfolio isn’t trying to win in any single environment. It’s trying to avoid being destroyed in any of them.

I took a rough version of that idea and ran it through a backtest:

  • SPY 30%, US stocks, for growth
  • TLT 40%, long-term Treasuries, for deflation scares and recessions

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Kryptera
Kryptera

Written by Kryptera

Quant Research Systems Builder Pine Script → Python/vectorbt Backtesting • Optimization • Research Dashboards