Robinhood’s (NASDAQ: HOOD) third-quarter transaction-based revenues on cryptocurrencies indicated a significant plunge (55% year-over-year and 26% quarter-over-quarter) compared to the softer drop of 13% in transaction revenues for equities. Industry titans BlackRock, DTCC, OCC, State Street, Société Générale, Hedera, Citi, BMO, Northern Trust, Citibank, Amazon, S&P Global, Google, Invesco, and Moody’s will join Benzinga on Nov. 13 Fintech Deal Day and Nov. 14 Future of Digital Assets. Secure a spot here to join them. What Happened? Popular for its role in the meme stock craze in early 2021, R…