Quote from shark:
What this means is that any sort of technical analysis that ONLY applies to stock A is absolutely worthless. You can draw hundreds of different looking patterns/trendlines in hundreds of different stocks for the same time period, but it's still the same general market move. If you're going to draw a trendline for stock A, be aware that in reality it's very "fuzzy". Exact price points have no meaning.
Attached is an overlay of IBM and SPY. I'll be back in like 2 hours.
Can you explain how you are attempting to use TA so we can see why you consider it worthless?