Watch this creative video portraying the consumer sentiment:
If buyers delay purchases of new phones then this could affect expectations on earnings for the stock. iPhone 4 growth is already embedded into the stock price and any changes to these expectations could have implications for Apple's stock and the markets overall. AAPL represents approximately 20% of the QQQQ's ETF holdings. If you believe that if Apple encounters heavy volume selling you might see the rest of the NASDAQ collapse very quickly along with most other equities. The companies behind the QQQQ index like Google, Qualcomm, Microsoft, Cisco, Research in Motion are being sold off and the index is being supported by Apple's Strength. See Displaced EMA. What does this say if and when institutions decide to sell AAPL stock we might see a major downdraft?
The Theory of Black Swan Events is the disproportionate role of high-impact, hard-to-predict, and rare events that are beyond the realm of normal expectations. The unexpected event usually has a large magnitude of consequences.