cash drag

Homework / test English to Italian Bus/Financial Investment / Securities

La frase:
"Reinvest excess cash to reduce cash drag in long stock portfolios"

Ho trovato la seguente spiegazione in rete:
"Many endowments and pension plans maintain relatively large cash balances within individual
manager-level or separate disbursement accounts. While this cash can serve to provide a necessary
level of liquidity for a plan, these balances can also serve to reduce the total return of the portfolio.
This problem is known as cash drag. "
http://www.wurts.com/knowledge/uploads/cash_equitization.pdf

Mi sapete suggerire una buona resa in italiano? Grazie!