FuelCell Energy Inc (FCEL)

[AgeOfReason]

The concept of Fibonacci ratios used as Fibonacci retracement levels in technical analysis of stocks is also interesting. See https://economictimes.indiatimes.com/markets/stocks/news/technicals-with-etmarkets-how-to-use-fibonacci-to-identify-buying-levels/articleshow/53718163.cms which mentions "Fibonacci ratios i.e. 61.8%, 38.2%, and 23.6% can help a trader identify the possible extent of retracement. Traders can use these levels to position themselves for a trade. ... Think of a situation where you wanted to buy a particular stock but you have not been able to do so because of a sharp runup in the stock. In such a situation, the most prudent action to take would be to wait for a retracement in the stock price. Fibonacci retracement levels such as 61.8%, 38.2% and 23.6% act as potential levels up to which a stock can correct." FCEL in August 2020 reached an intraday new 52-week high of $3.50 and 61.8% of that amount is 2.163 - nearly identical to the $2.17 price level (where I once had a limit buy order on the stock) that the stock was trading at (and around) for some time on Sept. 10th and 11th before starting to shoot up on the 14th! I think I've seen similar activity in charts of FCEL for the early 2019 to late 2019 time frame.

Some web pages also mention a 76.4% level and some other levels. See https://commodity.com/technical-analysis/fibonacci-retracements/ for an example.