What are the bad news that makes the price falls?
Where do u live ?
FBI selling SR seized coins
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That´s not true. Legally they can´t sell them on an exchange, only in an auction... And why it´s bitstamp 550 and huobi 600? That makes no sense.
The market sells in anticipation of auction buyers liquidating coins on exchanges for arbitrage. Keep in mind that market prices are the prices of "tomorrow", not today.
The thing is, bidding hasn't begun yet, and bids will likely be weighed against market price at the time of bidding (assuming arbitrage was the goal). Bidders must factor in risk of what other bidders are going to do with the coins, or market movements in the days it takes between bidding and taking possession.
In my opinion, the market has already overreacted to this news, meaning I think the price is lower right now than it will be in 3 weeks or so. 30k coins might seem scary for someone who's staring at a chart on one exchange and imagining them all coming down at once, but that's nowhere near the reality. I'd be surprised if half of them come down at once, and even more surprised if that were all on a single exchange, let alone any exchange at all. Half of them represents about 4 days worth of new bitcoins from mining alone.
If you haven't sold into the panic yet, you're probably too late to capitalize. Maybe you'll get another shot as distribution day approaches, maybe not. If you DID panic sell, start looking to get back in, because it's probably not going to get much better. Take your profits, pat yourself on the back.