It is said that the US Securities and Exchange Commission (SEC) announcement about ICOs platforms and the possibility of forcing them to register is one factor to take into consideration. Second, Japan’s FSA recently suspended two exchanges and penalized another four, which caused a bit of panic among the [Suspicious link removed]munity. Last but not least, rumors started running across Redditt that Binance was being hacked. All these situations caused the cryptocurrency prices to go down by 5-15% on average.
To explain this a bit more, take a look at this video that easily explains what exactly happened this week https://cryptocoin.news/news/altcoins-this-week-why-cryptocurrency-prices-went-down-blockchain-legislation-in-russia-and-much-more-8714/
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