An asset search for stock share certificates begins with looking for red flags.  These red flags are listed at the July 2019 paper “FIU Tools and Practices for Investigating Laundering of The Proceeds of Corruption.”  As page 19 paragraph 29 of the paper says, you should look for:

[R]eceiv[ing] or purchas[ing] shares

Mobsters and fraudsters hiding assets seem to favor Formations House in London, an Organized Crime and Corruption Reporting Project webpage revealed. The webpage is called “#29LEAKS: Inside A London Company Mill.” Its first paragraph describes some of the customers thought to use Formations House:

What do a Swedish Hells Angels boss, an Iranian state oil