Delphi Digital: Backtesting of 5-Year Holding Periods for Major Crypto Assets Shows Most Entry Points Delivered Positive Returns Delphi Digital analyzed daily price data since May 2016 across all possible 5-year holding periods for $BTC , Ethereum, and Solana, including staking yields for $ETH and $SOL . Bitcoin recorded only 11 negative windows, with the worst case at around -13%, while Ethereum and Solana recorded none. Bitcoin’s median 5-year return was over 8x, and Ethereum’s was nearly 13x. For comparison, Nvidia’s roughly 14x return over the past five years is similar to the third quartile of historical 5-year #BTC and #ETH returns.