NVDA's influence on $QQQ stability through year-end

It feels like NVDA's current run, while impressive, is creating a somewhat brittle foundation for broader tech indices like $QQQ. With $QQQ holding around 710, a significant portion of that valuation, especially in the AI narrative, is tied to a handful of names. I'd put the odds at about 60% that we see $QQQ pull back into the 680-690 range by year-end, primarily driven by profit-taking in the AI sector if Q3 earnings, particularly from the largest players, don't show further accelerating growth that justifies current multiples. There's just not much room for error right now, and any slight disappointment could trigger a disproportionate move given how extended some of these names are. It's not a call for collapse, but a re-evaluation feels likely.