Well, if you don't think the company is fundamentally valuable/sound, then you shouldn't be owning it in the first place. But, presumably, most people bought it because they believed in the company. So, as i've said, just hold. The stock price will eventually adjust itself. Only sell if you think the company is broken for good.
Another method Mr. Buffet uses is to, with very few exceptions, avoid tech stocks. While it is oft stated this is because he doesn't understand the sector, that only tells part of the story. The reality is that two of Buffet's core strategies, "buy and hold" & intrinsic value based investments, are at odds with the dynamic landscape almost by definition is the tech sector.
Prudent investors will leverage different strategies in different sectors... or largely, if not completely, avoid those sectors that do not typically align with their investment strategies.
In the long term we are all dead. That said, AAPL's sharp drop is due to the fact it is overly owned in institutional portfolios. What we are getting is a herd mentality. This is how Wall Street operates. It is more important to know when to sell than when to buy. That is when technical anaylsis comes into play to protect gains. NEVER FALL IN LOVE WITH A STOCK.
Use dead cat rallies to sell - not buy. Move on !
with 2.3% yield and lets say you bought on average at $500, you will need at least 6-8 years to recover your money, that's not factoring in inflation and not factoring in more drop in stock price. There are better stocks out there that pay more dividend and relatively stable compared to AAPL.