Looking back at my investing in 2010, I am with happy with how it turned out. With the first investment I made in Noble Corp. (NYSE:NE) in late May and early June, this position is currently up over 20%. My second investment of year was in Aeropostale (NYSE:ARO) in September, has not moved at all from my purchase price, but has done a great job a decreasing share count since I have become a shareholder. However, my mistake was only investing in this one down retailer. Looking back, I wish that I would have split my purchase between Aeropostale (ARO) and Buckle (NYSE:BKE) since both are top operators in the specialty retail space, yet serve completely different groups. ARO offers clothing at rock-bottom value prices, while BKE makes a lot off of highly priced jeans and other clothing. This mistake of omission, not splitting my purchase between ARO and BKE, is not a terrible mistake, but has taught me a lesson to diversify buying when you find multiple, great companies at the same time. Personally, I'm glad the mistake that I made was not on a purchase, but rather a lack their of one. Still, I'm very happy with my investing in 2010 and look to keep learning and getting even better.