Are you interested in generally keeping track of the price of a Stock but want to avoid checking all the time and obsessing over it?
Sign up for a simple email notification on changes of at least some specified percent. The logic is simple, my software checks the price and when it has changed by at least the specified percent from that last notification, an email is sent out.
Notifications for 1% will probably be frequent. Others are likely to be much less frequent. I'd suggest trying it out with 0.25% to see what the notifications look like and then unsubscribing from that one and adding one that makes sense to you.
I won't use your email for anything other than the notifications specified above. The messages will be delivered by Amazon SNS and you can unsubscribe any time.