(Bloomberg) -- YieldStreet Inc., the online firm that offers esoteric investments to affluent individuals, is exploring options including a sale, while also weighing setting up a special purpose acquisition company of its own, according to people with knowledge of the matter.The New York-based company is working with an adviser to solicit interest from potential buyers including blank-check firms, and separately, is in early discussions with potential co-sponsors for its own SPAC, said the people, who requested anonymity because the talks are private. Merging with a SPAC is an increasingly pop...