More likely that a biggish shareholder had a sleepless night after yesterday's collapse, and woke up feeling "I don't care - I'll just get rid of them! The way they sold down yesterday I may not be able to drip feed them out".
If so, they'll sleep better tonight anyway.
It isn't a question of wondering whether something is up - we know something is down. The share price.
CDU Price at posting:
$1.11 Sentiment: Sell Disclosure: Not Held