Fixed-Fraction Rebalancing to Maintain a Target Asset Allocation

Summary

This strategy keeps an asset at a chosen share of portfolio equity. It opens a position using the target percentage and initial capital, then compares the position’s current value with account equity. If the share falls below target, it buys; if it rises above target, it sells. The document presents this as a way to hold relatively stable assets over time and to rebalance across uncorrelated assets.

The discussion lists potential benefits, including reducing concentration and trading around price fluctuations, alongside risks such as fees, delayed adjustments, and losses from volatile assets. It suggests limiting small rebalances, choosing assets carefully, and tuning the target allocation. Stop losses, signal checks, and dynamic allocation are proposed as possible extensions. The source settings describe a BTC/USDT futures backtest window, but the document provides no performance results. Its sample logic also has implementation limits: the stated date-window function always returns true, so the supplied code does not actually enforce the chosen dates. The strategy’s suitability and outcomes therefore require independent testing.

Key ideas

• The strategy targets a fixed asset-value share of total portfolio equity.
• It buys when the asset share falls below target and sells when it rises above target.
• The document presents the method as more suitable for relatively stable assets.
• Frequent rebalancing can increase fees, while delayed adjustments can miss favorable prices.
• The supplied source does not report performance and its date-window function does not enforce the selected dates.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.