This big spike up is predominantly caused by small and biggers investors positioning themselves into ripple before january first.
Many news events will come out on this great stable and strong coins.
Ripple may be listed on coinbase,
Ripple may contract with AMAZON or ALIBABABA or another big online company.
These two events may trigger a doubling or trippling effect on Ripple on Jan 1st,
This is the last chance to position yourself in before jan 1st. Its a great buy and hold from now on!