What does the NetJets "QS" stand for? Every NetJets aircraft that I've seen has a tail number ending in QS. Knowing aircraft operators, I'm sure it stands for something, but I don't know what.

What does the QS stand for in NetJets tail numbers?
The "QS" first stood for quarter share, according to the 1998 issue of Flying. Each aircraft will have multiple owners to help bring the cost down for the owner.