For some clients at least - for BTC futures trades GS requiring a full deposit

  • funds equal to the full value of their bitcoin futures trade as a condition for clearing the transaction

"Margin decisions are based on multiple factors and vary on a case-by-case basis," Tiffany Galvin, a spokeswoman for New York-based Goldman Sachs, said Thursday in a statement

It's a volatile instrument (BTC futures on the CBOE) but 100% does sound a lot.

Anyway, more here if you're interested: Goldman Wants a 100% Margin on Some Bitcoin Futures Trades

Anyway, here is how futures are currently trading: