She is not alone, as a wide range of institutional investors are bullish on sports betting. One prominent investment manager, Cathie Wood of Ark Invest, has taken a large position in DraftKings. sports betting market is expected to grow to nearly $40 billion in annual revenue by 2033, according to Goldman Sachs. Each month, our “Stock Watch” series examines recent trends in sports betting equities across Wall Street and outside the U.S.