Based in New York City, Newcastle Investment ( NCT) is a real estate investment company. This penny stock invests in real estate securities and loans, while also managing a portfolio of real estate investments. Shareholders have been pleased so far in 2010, as Newcastle's stock has climbed 24.4% since January. Over the past 12 months, the stock has jumped 72.2% and it recently posted a second quarter net profit margin of +161%. Finally, the fact that it has outperformed earnings estimates for four consecutive quarters makes this penny stock a strong buying opportunity.