I think you need to do a bit more work about what a nominee...

I think you need to do a bit more work about what a nominee company does:

"What is the purpose of a nominee company?
nominee company. Company formed by a bank or other fiduciary organization to hold and administer securities or other assets as a custodian (registered owner) on behalf of an actual owner (beneficial owner) under a custodial agreement." - google search

JP Morgan probably have nothing in this themselves.

My opinion is that it is probably used by some to hide a substantial holding.