Big Tech stocks $Apple (AAPL.US)$,  $Microsoft (MSFT.US)$ , $Alphabet-A (GOOGL.US)$, $Amazon (AMZN.US)$, $Meta Platforms (FB.US)$ that dominate the $S&P 500 Index (.SPX.US)$ have delivered impressive earnings that are generally higher than expected but were mostly sold off after reports of better than expected earnings. Still, these Big Tech shares are hovering near record highs. With regulatory challenges and Fed tapering, the risk of heightened market volatility seems to be lingering. The five Big Tech firms are acknowledged by many institutional investors as having the strongest business models in the stock planet and their valuation can continue to rise as cloud potential is still growing. While regulatory pressures may take a while to abate, the future earnings outlook for these Big Tech companies and the macro outlook should be key factors to consider whether it would still be worthwhile to buy on pullbacks, which have been pretty mild so far relative to deep market history.