By the end of trading Tuesday, Dec. 26, the 500 billionaires controlled US$5.3t (NZ$7.5t), up from US$4.4t (NZ$6.2t) on Dec. 27, 2016.
"It's part of the second-most robust and second-longest bull market in history," said Mike Ryan, chief investment officer for the Americas at UBS Wealth Management. "Of all the guidance we gave people over the course of this year, the most important advice was staying invested."
Winners
• The 38 Chinese billionaires on the Bloomberg index added US$177b in 2017, a 65 per cent gain that was the biggest of the 49 countries represented.
• Hui Ka Yan, founder of developer China Evergrande Group, added US$25.9b, a 350 per cent jump from last year, and the second-biggest US dollar gain on the index, after Bezos.
• Technology billionaire Ma Huateng, co-founder of messaging service Tencent Holdings, became Asia's second-richest person when his fortune nearly doubled to US$41b.
• The number of Asian billionaires surpassed the US for the first time, according to a UBS Group AG and PricewaterhouseCoopers report.
• The US has the largest presence on the index, with 159 billionaires who added US$315b, an 18 per cent gain that gives them a collective net worth of US$2t.
• Russia's 27 richest people put behind them the economic pain that followed President Vladimir Putin's 2014 annexation of Crimea, adding US$29b to US$275b, surpassing the collective net worth they had before western economic sanctions began.
• It was also a banner year for tech moguls, with the 57 technology billionaires on the index adding US$262b, a 35 per cent increase that was the most of any sector on the ranking.
• Facebook co-founder Mark Zuckerberg had the fourth-largest US dollar increase on the index, adding US$22.6b, or 45 per cent, and filed plans to sell 18 per cent of his stake in the social media giant as part of his plan to give away the majority of his US$72.6b fortune.
• In all, the 440 billionaires on the index who added to their fortunes in 2017, gained a combined US$1.05t.
Losers
• The fortune of French telecommunications billionaire Patrick Drahi fell US$4.1b to $6.3b, a 39 per cent drop.
• Prince Alwaleed Bin Talal, the richest person in Saudi Arabia, dropped US$1.9b to US$17.8b after he was detained in a crackdown against corruption led by Crown Prince Mohammed bin Salman that targeted royals, government officials and business leaders.
• There were 60 billionaires who fell from the ranking, including South African retailer Christo Wiese, whose fortune dropped to US$1.8b from a peak of US$7.7b, in August 2016, after news of an accounting scandal at his Steinhoff International Holdings NV broke on Dec 5.
• Sumner Redstone, 94, also fell off the list as CBS owner Viacom continued to grapple with a bitter battle for control between his daughter and other executives, while Rupert Murdoch, 86, sidestepped succession concerns with a December deal to sell much of 21st Century Fox's entertainment assets to Walt Disney Co. Redstone shed US$90m. Murdoch added US$2.7b.
• In all, the 58 of the 500 billionaires who saw their fortunes shrink in 2017, lost a combined US$46 billion.
New wealth
• The Bloomberg index discovered 67 hidden billionaires in 2017.
• Renaissance Technologies's Henry Laufer was identified with a net worth of US$4b in April. Robert Mercer, 71, who plans to step down as co-CEO of the world's most profitable trading fund on Jan. 1, couldn't be confirmed as a billionaire.
• Two fish billionaires were caught: Russia's Vitaly Orlov and Chuck Bundrant of Trident Seafood.
• A Brazilian tycoon who built a US$1.3b fortune with Latin America's biggest wind developer was interviewed in April.
• Two New York real estate moguls were identified, Ben Ashkenazy and Joel Wiener.
• Several technology startup billionaires were identified, including the chief executive officer of Roku and the two co-founders of Wayfair.
• Investor euphoria created a number of bitcoin billionaires, including Tyler and Cameron Winkelvoss, with the value of the cryptocurrency soaring to more than US$16,000 Tuesday, up from US$1,140 on Jan. 4. The leap came with a chorus of warnings, including from Janet Yellen, who called the emerging tender a "highly speculative asset" at her last news conference as chair of the Federal Reserve, on Dec 13.
With wealth surging to new highs, billionaires may quickly learn that a billion dollars doesn't buy what it used to. The price of housing has topped US$300m, the cost of divorce has hit US$1b and a rediscovered painting by Leonardo da Vinci sold for US$450.3m at a Christie's auction in November, the most expensive work ever sold.
"Would you believe it?" Eli Broad, who has a US$7.4b fortune and his own museum in Los Angeles, said after the sale. "It's wild."
