Offer your thoughts or opinion on the input financial query or topic using your financial background.

Are traders 100% responsible for a stock's price changes?
Yes traders, living or algorithmic, are the only direct factors that can cause a change in the price of a marketable item. Traders can be affected by news, broken exchanges ;), emotional cycles, lunar cycles, time the trader goes to lunch (or a power cycle if you are an algo running on that unfortunate OS), anything.