Asset-growth tilt
PortfolioAdvanced
The asset-growth effect says companies that expand their balance sheets fastest tend to deliver lower subsequent stock returns than companies that grow assets more slowly, in the samples studied. A portfolio rule underweights or shorts high asset growth and overweight slow or negative asset growth. It is a fundamental sort. It uses accounting data, not a price oscillator.
Not investment advice. Nothing here is a recommendation to buy or sell anything. Backtests and historical studies are not guarantees, and a rule that worked in one sample can fail in the next. Trading can lose money. Links are for education, not endorsements. Do your own research.
- Rules
- Once a year, or monthly with a stale annual figure, rank stocks on the year-over-year change in total assets using the last reported filing. Buy the low-growth portfolio and short or underweight the high-growth portfolio. Lag the data so the filing was public. Apply a liquidity filter. Do not replace assets with revenue growth and assume the same result.
- Where AI fits
- AI can read the filing date and the asset line item, lag them, and refuse restatements that were not yet public. It can keep the sort inside sectors so a growth industry is not the entire short book. The lag is the detail that makes the backtest honest.
- Markets
- Individual stocks with standard financial statements. Financial firms sometimes need a different asset definition or an exclusion.
- Timeframes
- Annual signal, held for months up to a year.
- Risks
- High asset growth includes acquisitions and investment that sometimes pay off. Accounting regimes differ. The short book of aggressive growers can be expensive to borrow and can rally. A stale filing is a stale view of the firm. Historical cross-sectional patterns are not a forecast for the next filing season.