Who is Ms. Croft?

Evan is becoming increasingly interested in the stock market and the trends of stocks.  On many occasions he will ask daddy to pull up the stocks on his phone.  We got to discussing that maybe Evan should invest an imaginary $100 in a company and follow it to see what it does.  He thought about it and said I can't invest in Apple because their stock is $400 a share (and he was correct).  He thought some more and said how about Ms. Croft?  What?  Evan what is Ms. Croft?  'The windows company'  ?? 'Bill Gates'.  Oh, Microsoft.  After a good laugh by all it was time for bed.