Profit Erosion

Profit erosion in the context of financial derivatives and cryptocurrency refers to the gradual reduction of expected returns on a position due to external or internal friction costs. This phenomenon occurs when transaction fees, slippage, or funding rates slowly diminish the capital base of a trade over time.

In high-frequency trading and automated market making, profit erosion is often caused by inefficient order routing or unfavorable market microstructure dynamics. Traders must account for these hidden costs to ensure their net profitability remains positive after all expenses.

If these costs exceed the expected alpha, the trade becomes a losing endeavor regardless of price movement. It is a critical metric for managing long-term portfolio performance.