A special purpose acquisition company (SPAC) is a company without commercial operations formed to raise capital through an IPO for acquiring or merging with an existing company.
A Special Purpose Vehicle (SPV) is a subsidiary created to isolate financial risk. It serves as a separate entity for financial activities, which can sometimes lead to amusing and dubious financial antics.
A speculator is a financial market participant who engages in the buying and selling of assets to capitalize on price fluctuations over short time frames.