I read this a lot on yahoo finance, reddit and other investing related discussions, that somehow Blackrock or Vanguard having a big position means they know som

I read this a lot on yahoo finance, reddit and other investing related discussions, that somehow Blackrock or Vanguard having a big position means they know something and is a positive sign for a stock. There are a ton of articles and documentaries about Blackrock being some secretive bank that "secretly" owns a big chunk of worldwide assets, which fuels this belief in my opinion. And while it's true that they own a lot of assets, they don't own it directly and are actually a rather boring business. They are completely passive most of the time.