Bonding Nonqualifying Assets

I am researching Insurers that issue Bonds for Non qualifying assets.

Colonial Surety and Surety One, I have used in the past, but both are relatively expensive.

Any other out there that might be recommended?

Although I cannot recommend any particular surety company,  the Treasury Department publish a list each July 1 of approved surety companies in which the plan sponsor may purchase a fidelity bond for the plan.  Here is a link to the approved list of surety companies.

https://fiscal.treasury.gov/surety-bonds/list-certified-companies.html

I am not sure of the cost but I have one client that uses Travelers to cover all the Non qualifying assets.