Big Pharma and mainstream media are largely owned by two asset management firms: BlackRock and Vanguard. Drug companies are driving COVID-19 responses — all of which, so far, have endangered rather than optimized public health — and mainstream media have been willing accomplices in spreading their propaganda, a false official narrative that leads the public astray and fosters fear based on lies. Vanguard and BlackRock are the top two owners of Time Warner, Comcast, Disney and News Corp, four of the six media companies that control more than 90% of the U.S. media landscape. BlackRock and Vanguard form a secret monopoly that own just about everything else you can think of too. In all, they have ownership in 1,600 American firms, which in 2015 had combined revenues of $9.1 trillion. When you add in the third-largest global owner, State Street, their combined ownership encompasses nearly 90% of all S&P 500 firms. Vanguard is the largest shareholder of BlackRock. Vanguard itself, on the other hand, has a unique structure that makes its ownership more difficult to discern, but many of the oldest, richest families in the world can be linked to Vanguard funds.
https://childrenshealthdefense.org/defender/blackrock-vanguard-own-big-pharma-media/
Majority shareholder basically means you own the company. That is how corporate takeovers and raiders on wallstreet pillage the bones of companies like SEARS or TOYS R US. They gain control of the board through majority share, put people on the board that will steer the company into short term profits at the expense of long term viability evenutally leading to bankruptcy of the company, meanwhile the hedge funds/raiders make off with millions if not billions in profit.