What will this rich and secretive Dutch family do with $4 billion more?

Even as the family avoids the limelight, its fortune has continued to grow

One of the world’s richest and most discreet families must decide what to do with a massive pile of cash.

The Van der Vorms, little known outside the Netherlands despite holdings that span the globe, will get as much as $4 billion this year from the sale of an eyewear retailer to Ray-Ban maker EssilorLuxottica SA. The money will go into the publicly traded Hal Trust, which the family controls.

“I’m very curious what Hal will do with the billions,” ABN Amro Bank NV’s Thijs Berkelder said. “Nobody from outside knows.” The family could return cash to shareholders, invest it or even