Kevin O'Leary, the famed Shark Tank investor, thinks non-fungible tokens could become a "much bigger, more fluid market potentially than just bitcoin alone," he told CNBC in a televised interview. Keep in mind an NFT are cryptographic assets that represents real-world objects, and also serves as an important medium in the metaverse. "You're going to see a lot of movement in terms of doing authentication and insurance policies and real estate transfer taxes all online over the next few years," O'Leary adds. Note that "NFT" Google searches already surpassed "crypto" and "bitcoin" for the first time ever towards the end of December. "We'll see what happens but I'm making that bet and I'm investing on both sides of that equation," O'Leary told CNBC. Meanwhile, NFT-related stocks/ETFs are mixed so far on Wednesday, including: Vinco Ventures (BBIG -3.1%), Cordia (OTCPK:CORG), Defiance Digital Revolution ETF (NFTZ -1.3%), Hall of Fame Resort (HOFV