Blackstone Mortgage Trust (BXMT) looks like a good dividend company to invest in. It has an exciting dividend yield of almost 10%, trades below book value, and is part of Blackstone, the biggest private equity company in the world. The BXMT stock price was trading at $18.55 on Friday, the same level it has been at in the past few weeks. It remains 35% above its lowest point in 2023, giving it a market cap of $3.31 billion, much lower than its $19.3 billion loan portfolio. What is Blackstone Mortgage?Blackstone Mortgage is a leading company that dividend-focused investors love for its long trac…