Quiver Quantitative tracks and shares a lot of stock trading information to enable reporting on and the utilization of trading strategies that might previously have been relatively hard to put together for mere retail investors.
For example here’s a dashboard showing which US politicians are buying which stocks. Apparently following what they do has been quite profitable in recent times.
I built a trading bot that buys stocks that are being bought by politicians. It is up 20% since it launched in May 2022. The market has been flat during the same time period.
Other datasets include spending on lobbying, which companies the folk at r/wallstreetbets are talking about , or Google Trends search interest trends in various companies.
(None of this is a personal recommendation to adopt any of these strategies of course!)