Get ready for most cryptocurrencies to hit zero, says Goldman Sachs

But even there he sounded a note of caution, arguing that current technology doesn't yet offer the speed required for market transactions

The tumble in cryptocurrencies that erased nearly $500 billion of market value over the past month could get a lot worse, according to Goldman Sachs Group Inc.’s global head of investment research.

Most digital currencies are unlikely to survive in their current form, and investors should prepare for coins to lose all their value as they’re replaced by a small set of future competitors, Goldman’s Steve Strongin said in a report dated February 5. While he didn’t posit a timeframe for losses in existing coins, he said recent price swings indicated a bubble and that the tendency for different tokens to