Instead of letting your option expire, you roll it over. That means you close the contract that's about to expire and simultaneously open a new one with an expiration date further out in time.
This process can include a new strike price as well. Rolling up involves setting a higher strike price. Rolling down has the trader purchasing a new contract with a lower strike price.
You hold an option to buy 100 shares of BAC at a strike price of $30, with a May expiration. It's getting close to the expiration date. You want to use a roll up strategy. So you close out your current option and buy a new one. Your new contract gives you the right to buy 100 shares of BAC at a strike price of $32, with a July expiration.
Related or Semi-related Video
Finance: What are stock options in 90 se...0 Views
Finance allah shmoop what are stock options in ninety seconds
or less Here's a stock ibm not the tech company
This one makes an anti constipation drug It's trading at
one hundred eighty bucks a share Okay so here's an
option of buy a share of ibm anytime in roughly
the next three months For one hundred ninety dollars a
share it's called a call option If you really believe
the ibm will go to say two hundred dollars a
share in the next three months well you'd be what's
called ten dollars in the money then or then have
a stock option or call option with a strike price
of one hundred ninety dollars which would then have intrinsic
value of ten bucks a share On the other end
of the buy sell desk is the gal willing to
sell you that call option for three bucks Three bucks
a premium So gut check time Would you pay three
dollars for the right to buy a share if ibm
for ten dollars higher than where the stock's trading now
today Meaning that to break even in the next three
months the stock has to trade all the way up
from one hundred eighty dollars a share to one hundred
ninety three dollars a share jobs for you to get
your money back but it goes to two hundred two
share Well if you sell that option you'll have invested
three bucks a share for a net return of seven
bucks in just three months or less And yes we're
ignoring commissions and taxes here because well in problems like
this or just a in the book but three dollars
into seven only three months Yeah that's a great score
You'd have more than doubled your money And on an
annualized return basis that's over a nine hundred percent dish
return really good score but with a much more likely
case that you spend three bucks to buy the option
and it expires totally worthless And then you've lost your
entire investment in that option So that's a call option
It's evil twin is a put option So whereas a
call options the rightto by a security to set price
by a certain set date a put option is the
right to sell that option We'd go into more detail
here but we're promised ninety seconds
Up Next
What is a put option? A put option is a type of contract that lets the investor sell shares of a stock at a certain price and within a window of ti...
What is a call option? A call option is a type of contract that lets the investor buy shares of a stock at a certain price and within a window of t...
The intrinsic value of an option is the share price of a stock minus its strike price - i.e. the "in the money" amount.