After finding some stability from weekend lows, $16,000 appears too difficult to break through as prices tumble

On the GDAX exchange, it's back below $14,000 again. It's been flirting with the figure level for quite a bit over the last few hours.

The price is testing the upward trendline formed from early to late November. It's a level that has stemmed declines over the last week - as it hasn't closed below the trendline level yet.

And that's where the battle is ensuing now. The low for today on the GDAX exchange is $13,801. It opened the day at $15,196.19. From yesterday's peak at $16,490, Bitcoin is down 16% through today.