If you look at the 5 min chart you can see it jumped down below support at 8.3c to 7.9. With a lot of traders in atm, the support line in sight and the 8c psychological level, it's not to hard to guess there's a lot of automatic stops set just below 8c. Running stops like that is not that unusual when there's an obvious level where they'll be clustered.
You can see there's a big dump at 3:45:46 which brought it down to 8c. Then a 1 second pause (to see if triggered enough stops) then at 47s another dump down to 7.8c, firmly into the stoploss zone.
NWE Price at posting:
7.8¢ Sentiment: Buy Disclosure: Held