I'm enrolled in my company's stock purchase plan that allows me to purchase my company's shares at a 15% discount on June 30. I can buy shares for 15% off the lowest price of either January 1 or June 30.

The maximum I could've contributed to this account is 10% of my salary, and I put in 4%. But our stock has gone up over 20% in the past month!

Dang, I wish I would've contributed the maximum. At this point, it's a 40% return on my investment in one month...