We often mention market sentiment is a good indicator of either an over exuberant market where we need to take some off the top, or an over sold market where we should look to add. A lot of comments on BTC futures closing tomorrow. There is a concern that a trader could start aggressively buy or sell before the close to try and "manipulate" the market; However, in the era of bot and arbitrage traders would come in quickly to smooth things out. I could be wrong but I would rather position myself to the opposite side of the crowd who thinks we will go down because of the futures market, and nothing happen creating a rally after, then position myself into a crowded trade of "shorts". I really do not see the futures market having an effect but we will see. Keep in mind the large brokers want to introduce more products like options and ETN's so they have a reason to insure there things run smooth.