Comment by EVa5I7bHFq9mnYK

Institution is making money from trading fees which are not too high percentage wise. But the trading activity is very high, for many reasons. A lot more people can participate, from all over the world. Some use it to circumvent sanctions. Some enjoy day trading (no need to deposit $25000, as with US stocks). There are literally millions of instruments to trade. Some like to write algorithms, arbitrage, market making etc. Some dream of 1000x returns (and few do get them).