[stouset]

Yes, it is likely individual politicians are making insider trades.

It is also likely that some of those politicians are making bad trades based on overvalued or misvalued insider information. I have personally seen this in other contexts where people know something presumed private about a company, assume it’s a bigger deal than it is, and trade on that information.

It’s also likely that there are a lot of politicians who are generally just as bad as the average person at stockpicking.

All this combined, and it’s reasonable that the overall trend will be mostly in-line with the market, but likely overperforming sonewhat in the long run based on the volume and quality of insider trades. One year and change isn’t the long run.