The place might sound like a Wall Street throwback: Men do the trading. Women do the marketing. Not a single investment employee is Black. But here’s something even more remarkable: none of this is so remarkable at all. This, after all, is the hedge fund industry, one of the most White-male-dominated businesses in the mostly White-male world of American finance. Like most hedge-fund firms, this one, Solus Alternative Asset Management of New York, declined to discuss its roughly 50-person workforce, or how and why it hires who it does.