In February 2014, Facebook made a deal to acquire WhatsApp for $19 billion in cash and stock. By the time it was acquired the following October, that number rose to $22 billion. Acton owned 22% of the company at the time of the sale.
It was a major payday for Acton, who received roughly $3 billion for his stake in WhatsApp, with almost 38 million shares of Facebook and $1 billion in cash. He also collected about 10 million shares of Facebook in the form of restricted stock units.
Around the same time, Acton also launched Family Giving, a donor-advised fund at Fidelity Charitable, which supports initiatives with a close connection to Acton and his family such as building empathy in society. Current initiatives include supporting first-person storytelling and promoting compassion for vulnerable animals throughout the world.
Ever the tech man at heart, in 2016 Acton led a funding round in Gurgaon-based startup Trak N Tell, a car tracking telematics solution company. Along with two other investors, he reportedly raked in nearly $3.5 million in the startup.
In 2017, the Actons launched Solidarity Giving, another donor-advised fund at Fidelity Charitable, which focuses on human and civil rights. It commits about $10 million a year to its partners, which have included the ACLU Foundation, Anti-Defamation League, Planned Parenthood, and The Brady Center to Prevent Gun Violence.
In September 2017, Acton further spread his wings, revealing he planned to leave WhatsApp to start his own foundation. "I've decided to start a nonprofit focused at the intersection of nonprofit, technology, and communications," he wrote in a Facebook post.