Front-running is nothing new, this is simply a game of follow-the-leader where copying a group's investment strategy is done until larger players learn to frontrun or adversarially trade against the aforementioned frontrunners entering in. For example, a scanner may pick up an SEC filing published at 4:01 PM saying that the CEO, CFO, and CIO all purchased shares in their company, and traders would buy shares aftermarket before most institutions/derivative traders would see the report tomorrow morning. I'd guess that today's active investing crowd is a lot more interested in seeing outsize short-term returns based on information asymmetry than members of congress who more likely to hold in order to get long term capital gains tax applied.