Spanish to English Other Investment / Securities

This is a table that appears in an investment portfolio management contract.

Context:

1.- Perfiles de la gestión:

Se establecen los siguientes perfiles de gestión:


The headings across are:

Rangos de RF/Nivel Neutral/Rangos de RV/Nivel Neutral/Indice de referencia/Volat. aprox.

The headings going down are:

Conservador
Moderado
Agresivo
Trading

All of the fields contain percentages except for those under the heading "Indice de referencia". Some examples of what is under that heading are:

90%RF-10%RV
50%RF-50%RV
10%RF-90%RV

Now, I have no idea what Nivel Neutral is. What would be the proper translation of this?