Left-wing billionaire George Soros has transferred $18 billion to his Open Society Foundations, the primary vehicle for his global political activism and philanthropy.

The transfer, according to the Wall Street Journal, accounts for most of Soros’s foundation, which he accrued through a controversial career as an investor. The Journal notes: “Open Society has vaulted to the top ranks of philanthropic organizations, appearing to become the second largest in the U.S. by assets after the Bill and Melinda Gates Foundation, based on 2014 figures from the National Philanthropic Trust.”

Soros, who is 87, transferred the funds as part of a plan to make sure his activism continues after he retires or passes away. $18 billion is roughly three times the amount of money spent by all parties, in all races, during the 2016 election cycle, according to OpenSecrets. Though not all of the Open Society Foundations’ activities will be focused on the United States, Soros’ grant easily makes his organization the biggest player on the American political scene.

Globally, Soros is involved in efforts to make Ireland pro-abortion, to demonize the Israeli government, and to promote migration from the Muslim world into Europe across open borders.

Though Soros’s foundation was originally aimed at fostering “open societies” as opposed to authoritarian systems, in recent years the foundation’s work has supported dogmatic, aggressive left-wing groups that disrupt liberal democracy and stifle opposing voices. Soros has funded the Black Lives Matter movement and is considering bankrolling the so-called “resistance” to President Donald Trump. He also backs Media Matters, a so-called “watchdog” group that spends most of its energy trying to eliminate conservatives from the media.

Soros recently named former ambassador and Democratic National Committee official Patrick Gaspard as president of the Open Society Foundations as of the end of 2017.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. He was named one of the “most influential” people in news media in 2016. He is the co-author of How Trump Won: The Inside Story of a Revolution, is available from Regnery. Follow him on Twitter at @joelpollak.