When Forbes publishes its billionaire list, the numbers next to the names represent the estimated value of their assets—stocks, real estate, and private companies—rather than the balance in their checking accounts. If a person were to hold a billion dollars in physical $100 bills, it would weigh about 10,000 kilograms (22,000 pounds) and occupy roughly a dozen standard shipping pallets.
Escobar is the only famous historical billionaire known to have operated this way. Because his money could not be legally deposited into the global banking system, his operatives literally buried it in farming fields, hid it inside the walls of homes, and stacked it in humid warehouses. This approach highlighted exactly why people do not keep massive wealth in physical cash, as moisture and rodents would inevitably rot it away.
For legitimate modern billionaires, keeping billions in literal paper cash does not happen. However, holding billions in highly liquid cash equivalents is quite common. When executives like Jeff Bezos or Mark Zuckerberg sell massive tranches of their company stock, those funds initially land as liquid cash.
Instead of withdrawing physical bills or leaving billions sitting in a standard commercial bank account—which would far exceed standard government insurance limits—family offices immediately sweep these funds into ultra-safe, liquid instruments. This usually takes the form of short-term United States Treasury bills or institutional money market funds. These instruments act exactly like cash because they can be converted to spending power almost instantly without the logistical nightmare of guarding physical paper.
Holding physical cash or zero-yield bank deposits is financially counterproductive because inflation constantly erodes the purchasing power of idle money. By parking their liquid wealth in government-backed securities, billionaires ensure their uninvested money remains perfectly secure while still generating tens of millions of dollars in interest every year.