While seventh-grader Lindy Sachs is recovering from mononucleosis, her father gives her access to his e-trading account as a way to pass the time. Lindy soon discovers that she has a knack for buying and selling stocks.
A twelve-year-old takes on the stock market in this money-minded middle grade novel that Publishers Weekly calls "a smart pick."

It all starts when seventh grader Lindy Sachs is granted one hundred dollars and access to her father's online trading account as a way to alleviate her boredom while she's home sick from school.

Lindy learns something immediately--she is very, very good at e-trading. Her one hundred dollars soon becomes two hundred dollars. Then four hundred. And more. With trading talent and access to her parents' savings, the opportunity to make some real dough is too tempting to pass up. In fact, given how well Lindy's stocks are doing, it would be a disservice to not invest it all...Right?