The leadership of lunatic stocks such as Google, Netflix and Priceline is needed to power the broad averages higher, and that’s why a key support in the latter must hold.  If not, PCLN is likely to fall a further $35, presumably delaying the stock market’s ascent to fabulous new highs. Check out today’s tout for Priceline for precise benchmarks, the most immediate of which will be in play — and potentially short-able — Wednesday night and Thursday morning.