Well, it's not a hard and fast rule. But my point was that, generally, when SPY moves up, AAPL moves up and when SPY moves down, AAPL moves down (perhaps not to the same degree and perhaps not in every case, but it's common enough for me).
Yeah, I could be wrong about Apple taking a plunge with the rest of the market. I do think the market is in a bubble so it wouldn't surprise me to see Apple and most other stocks, tanking when it bursts (assuming, of course, I'm write about the market being in a bubble to begin with - I think I am).
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