This has basically been done, and is why people are interested in tracking trades. See https://www.researchgate.net/publication/227378283_Abnormal_Returns_From_

This has basically been done, and is why people are interested in tracking trades. See https://www.researchgate.net/publication/227378283_Abnormal_Returns_From_the_Common_Stock_Investments_of_Members_of_the_US_House_of_Representatives https://www.researchgate.net/publication/227378283_Abnormal_... In fact, the idea of creating an ETF that tracks congressional trades in real time has also been floated: https://www.cnbc.com/2011/11/14/a-congressional-insider-trading-etf.html https://www.cnbc.com/2011/11/14/a-congressional-insider-trad... The idea's a little half baked, of course.