…it is in global debt markets where investors worry that the if oil prices don’t improve then the debt linked to that sector might cause some banks to panic.
Having recently destroyed the credibility of its most famous journo campaigning for you to lose money on the “screaming buy” that is big iron:

According to Moody’s Credit Policy Research, the energy sector accounts for 25 per cent of all defaults so far this year, while the falling oil price looks like a trade that hedge funds might be happy to keep backing.