Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Why does a stock's price fluctuate so often, even when fresh news isn't available?
It's the buying and selling of the stock that causes the fluctuation in prices, not the news. People buy and sell all the time, and not just for newsworthy reasons.  They may have to send a child to college, or fix a roof, etc.  Or they may be technical traders looking for signals.  All kinds of reasons.