Commingling Assets of Multiple Solo 401(k) Plans

Would there be anything legally preventing a recordkeeper from commingling the assets of multiple Solo 401(k)s into a single trust account to achieve efficiencies for the all the individual plans? I know certain parts of ERISA do not apply to a Solo 401(k) plan, but I'm wondering if any of the sections that do apply would prohibit this practice?

It sounds like your looking for Pooled Employer Plans introduced by the Secure Act.

14 minutes ago, Lou S. said:

It sounds like your looking for Pooled Employer Plans introduced by the Secure Act.

Each plan has their own plan document, so I'm not sure a PEP is an available option. 

You might look at the securities law aspects.

A multiple employer trust is different than a multiple employer plan - you can have the former without the latter. 

This is different than a master trust, where assets of multiple plans of a single employer or controlled group of employers are contained in a single trust.

I do not think there are any restrictions on solo plans entering into this sort of arrangement.

Just curious, is this something the recordkeeper wants to do or is this something the Individual Solo K plans are requested? I would think that the custodial agreement would determine if this could be done or not. Also, this sounds like a recordkeeper's nightmare. 

23 minutes ago, JOH said:

Also, this sounds like a recordkeeper's nightmare. 

Exactly what I was thinking.