For me there is no cut and dried formula. While there is always some mix of FA and TA, roles vary greatly with what stage of growth a stock may be in. They also vary based on the holding length of time and type of trading buy/hold, swing, scalp etc. Another facet that varies is risk. Risk can be determined by either FA, TA or both.
Looking at XBI as a sector indicator of direction influence for AVXL, is that FA or TA? For the last month they are both down very similarly.
Is shorting something that falls in FA, TA or both? Currently AVXL is heavily shorted and there is a large community of negative information that is more intent on squashing AVXL than actually evaluating in an unbiased manner.
IMO, the value of TA is that it is much more accurate and available for determining support/resistance, buy/sell points, risk and changes in risk. TA is very important in scaling in or out of a stock as well as being very flexible.
At present I agree that it will take a fundamental event to significantly alter current direction, however any trading decisions will need to be TA inspired for best results. If not, one ends up waiting for the fundamental event and risks chasing a big gap up and run. That would potentially cost the buyer more capital and fewer shares to enter as well as trying to figure out how much risk has been increased due to an increase of volatility.
Just some thoughts that come to mind.
Green Trades.
