Politicians that have any influence or could potentially influence events that would intentionally or unintentionally sway the stock market should be banned from purchasing, trading, selling, etc… any stock, fund, or any form of publicly traded asset.
Their immediate family should also have limitations placed to prevent them from doing the same activities. This will help ensure that laws and regulations will be more focused on the impact of citizens and not the pockets of politicians and their families.
How did AOC go from being a broke bartender to being worth 29M in a short stint in congress, on a ~150k salary? Clearly has the same stock advisor as Nancy Pelosi.
I would propose a rule where anyone running for office would be required to sell off any and all individual securities after officially initiating a political campaign. Politicians can still be in the market but only in managed funds with government oversight similar to 529 approved funds. There would also be a requirement for up to 10% of their net worth to be held in escrow until after their term in office had ended. This amount would be required on day one of holding office. After they leave office they would not be able to invest in private securities for at least 4 more years. Escrow funds would only be released after the 4 year moratorium if they were found to be in good standing. If in any way there was violation of this rule, the amount held in escrow could be forfeited. There could also be criminal prosecution if the violation was found to be egregious.
High level politicians should give up all their rights to make money, in return for a reasonable pension. All their financials should be fully transparent.
This would make being a politician a sacrifice and a duty rather than a privilege - only true Patriots would want to be a politician. Politicians would be much more honest and well-intentioned.