They really don’t and you’re just promoting the same mystical thinking about how the NSA / FBI / CIA is totally wiretapping us all and knows all our details.
Ask yourself the solve rate on most serious crime on the US.
While the SEC has “algorithms” to look for insider trading, it’s most relying on folks with bad OPSEC bragging and getting turned in by bitter third-parties.
Source: worked for Thesys / Thesys CAT group before our fucktard brass lost us the contract.