You sold AAPL "in the high 600s" and bought in the low $600s. Right now, the "buttload" you bought "in the low 600s" is showing a loss of around 15% with AAPL trading at around 525.
Meanwhile, I sold AAPL stock at $655 in October. I bought Leapfrog (LF) just under $7.80 and sold yesterday at just above $8.90. I can buy back into AAPL at a 15% discount from where you bought back in, if I chose to do that.
If I buy AAPL now, I can make 30% on the money I got from my sale of AAPL in October when you will have broken even on your sale "in the high 600s" and repurchase of "another buttload of it in the low 600s".
Pardon me if I don't take your investing advice.