Sure you can find one stock and trade it. Problem with that is you are not always guaranteed good movement. All the technical BS people follow works best in trading in-play stocks. The patterns and levels formed are created by real buying and selling, not program noise and a few day traders.
If you trade a ascending triangle in a dead stock, you'll get a small move if your trigger is hit. Often the better trade in a dead stock is to go against the pattern, because there is no energy to push it.
In a stock that thousands and thousands of traders are watching, a pattern has a better chance of following through.
In FNSR today, the low was 13.91 or something.
As I said before, when a stock is down over 10%, I wait for the bounce. The bounce is the play, because real selling will eventually slow, buyers will step in, and shorts will get squeezed. Morning volume broke the 14 level, but it held the 90s. It then bounced 50 cents. It returned to 14. Unable to break, that was your buy, with your stop at 13.89. If a stock can't make a new low by 10:30, more often than not the thing is not going to trend. Right there, you know you should play the bounce. Target A 14.40, Target B 14.90. Then if FNSR breaks 15, you'll have another squeeze, in addition to any value buyers chasing the price. Could have rebought, with lighter size and a tight stop.
However, you also want to look for the short. If FNSR held 15, you'd be looking to short with your stop above 15. I would have taken that trade at first. I would have expected 15 to hold. And for some time it did, however, the 15 short only would have produced 20 cents or less, and that would not have been the target. However, your risk reward of 5 cents or less makes it too compelling not to take.
FNSR had a huge buying rush after the 15 break. After so many positive candles, and after a run away from the moving averages, you expect a reversal. FNSR did just that. If you didn't catch the top via level 2 analysis, you could have used the charts to enter a short after it made a lower high after the 15.50, which produced 15 cents.
Looking at the chart, FNSR looked like a great stock to be watching. It behaved well..
Next, take a look at JDSU. Double bottomed in the morning, giving a 50 cent move. Buy the hook up as the double bottom showed signs of formation with a stop just below lows. Again, if the stock isn't going to make a new low in the morning, it probably will not trend. JDSU had MORE of a reason to bounce than FNSR as the FNSR news does not guarantee trouble for JDSU. Target of 15.75 and 15.90. After the bounce, you look for a short. And it came, as it made a lower high around 16. Targets of 15.75 and 15.50.
Both stocks behaved great for anyone who just read the tape.