I doubt F2Pool bought those tokens for speculative purposes. They are in the mining business not the gambling business. I can say with a fair degree of confidence that they are going to stand for election as a block producer. They know the future of crypto is in PoS not PoW and they want to establish themselves as dPoS block producers.
RE: F2Pool, One Of World’s Largest Ethereum Miners, Purchases $3.1 Million USD worth of EOS Tokens. Update: Now owns 500K EOS or $7.31 MM USD worth.