I think it's a speeding ticket anyway @BoredSaint regardless of whether they are speeding up or down. @Arizona I'm guessing that the ASX has asked DRO to explain the rapid SP movement today, and have paused trading in DRO while DRO respond to that request. This is standard procedure when a share price moves so much on no news, but they sometimes don't do it with really small companies because they probably expect large SP swings due to liquidity issues. DRO is worth nearly $2 billion, or were yesterday, according to the ASX, so these types of SP movements will always trigger a "Please Explain" from the ASX for decent sized companies like this.
This could be leaked bad news or it could just be somebody with a substantial position selling down or out to lock in good profits. If DRO come back with a "we know nuthin'" response, then it's likely a sell down/out by somebody, which could be for any number of reasons, but would likely be to lock in profits.
There's also the "stop-loss" effect - where the further an SP falls, the more stop losses are triggered and the further the SP falls, like a death spiral. It usually sorts itself out in a day or two. I don't have a view on DRO specifically because the company itself does not interest me, but just commenting on what has been happening in terms of the trading today.
Tony Locantro, an ex-Federal Cop turned small cap mining and biotech speculator/investor/analyst coined the term "Speeding Ticket" for a Please Explain email from the ASX to a company whose share price (SP) had moved a LOT in a very short timeframe. He started using that term on YMYC (Your Money, Your Call) back in the day, and it caught on and now everybody uses it.
I think @neke86_ was perhaps suggesting that the ASX stepping in at this point and pausing trading has rescued holders from further damage in relation to that death spiral (stop loss effect or investors acting like sheep panicking and all running the same way).
