The Winklevoss twins, two of the biggest BitcoinBitcoin preachers out there, are a whole lot richer—thanks to Elon Musk. 

Tyler and Cameron Winklevoss, founders of crypto exchange Gemini, are often coy about how much Bitcoin they actually own. But if a previous figure from the New York Times is anything to go by, they had $11 million-worth of the currency in 2013. 

‘Undervalued’ Bitcoin Should Hit $500,000, Say Winklevoss Twins

Bitcoin prices can reach over $500,000 apiece amidst government-led inflation of fiat currencies and the business interests in mining gold from asteroids, said crypto exchange Gemini founders Tyler and Cameron Winklevoss in a blog post yesterday. The twins acknowledged that gold has historically served as a reliable store of value, with investors seeking a safety net against inflation causing the asset to trade at a higher premium—pushing prices beyond the demand for its actual consumption. And...

That’s when the price of Bitcoin was $141 per coin. It’s now up over 30,472%—at its new all-time high of $42,605.52 (at the time of writing). This means the twins’ fortune is now a spectacular $3.3 billion. And that’s a conservative estimate. 

Last time Decrypt reported on the twins’ Bitcoin wealth, we estimated the figure to be combined at $2.8 billion. 

That figure is now up half a billion. 

The twins have Elon Musk to thank for their latest boost in Bitcoin wealth. That’s because his company, Tesla, has invested $1.5 billion in the cryptocurrency, according to an SEC filing revealed today.

And the price of currency has since rocketed: at the time of writing it was $42,605.52, up 13% in the past 24 hours, according to CoinMarketCap data. 

Cameron Winklevoss today tweeted about Musk’s move. “If you are a company CEO and thinking about adding Bitcoin to your balance sheet you still have the opportunity to be an early adopter,” he wrote. “But not for long.”

If the twins’ prediction is right, they’ll be thanking CEOs for a long-time to come.