The Russian economy has been in a bit of a tailspin, with the ruble falling to its lowest value in more than a decade. There are many reasons for this—perhaps chiefly that Saudi Arabia is flooding the market with enough cheaply produced oil to all but bury Russia’s oil industry—and Russian citizens are right to be concerned about the value of the money in their pockets.

One group of Russian citizens wealthy enough to weather the storm is Russia’s elite, billionaire class. But they’ve been having a rough go of it, too. Though emergency measures enacted in the wee hours of Monday slowed the rate of the ruble’s tumble, these 15 oligarchs and tycoons have lost a collective $8.65 billion over the past 48 hours. Below, find their individual losses and new net worths, as of Tuesday evening New York time. The below figures were compiled using data from Bloomberg’s Billionaires index.

Alisher Usmanov – $809 million lost (new net worth: $13.4 billion). Viktor Vekselberg – $491 million lost (new net worth: $13.6 billion). Roman Abramovich – $449.5 million lost (new net worth: $12.8 billion). Mikhail Fridman – $417.2 million lost (new net worth: $12.4 billion). Vladimir Potanin – $183 million gained (new net worth: $12 billion). Alexey Mordashov – $996.7 million lost (new net worth: $10.6 billion). Mikhail Prokhorov – $411.1 million lost (new net worth: $10.4 billion). Dmitry Rybolovlev – $150.1 million lost (new net worth: $9.8 billion). Leonid Mikhelson – $389 million lost (new net worth: $9.2 billion). Andrey Melnichenko – $50.9 gained (new net worth: $8.9 billion). Sergey Galitskiy – $1.46 billion lost (new net worth: $8.1 billion). German Khan – $333.2 million lost (new net worth: $8.4 billion). Oleg Deripaska – $666.5 million lost (new net worth: $7.5 billion). Vladimir Lisin – $848.1 million lost (new net worth: $7 billion). Vagit Alekperov – $1.7 million lost (new net worth: $6.7 billion).

It’s somewhat normal for billionaires to suffer fluctuations in wealth that seem astronomical to the non-billionaire crowd, but this crop of elite Russians is generally outpacing their peers. In the same period, Carlos Slim, the Mexican billionaire, lost $2.99 billion of his original net worth of $67.9 billion. Mark Zuckerberg lost $1.34 billion of his original $34 billion. While Slim and Zuckerberg’s loss, in absolute numbers, surpassed those of their Russian counterparts, both of their respective percent losses over the past two days (4.40 percent and 3.94 percent, respectively) don't approach the above group’s average loss over the same period (5.99 percent).

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