SPY Meltdown Brewing?

If SPY gaps down and opens around 680 (or lower), the path of least resistance is indeed toward the lower descending parallel near 675 sometime Monday—probably mid-session or into the close if sellers maintain conviction. That level sits as triple confluence: the bottom rail of the new descending channel, the .382 Fib retracement of the entire (b) wave up from the neckline, and a volume shelf/put wall cluster where some absorption could occur. In negative gamma, dips accelerate until they hit meaningful support, so 675 becomes the natural first target after a clean break below 685–686. Odds of tagging 675 Monday (intraday or close) if we open sub-685?

The tape is already showing supply dominance with those repeated lower-band breaches and no real upside thrust to counter. The bigger fork in the road is exactly what you asked: does it break structure and accelerate straight through 675 to the measured (c) leg target at 668.68, or does 675 hold and keep price contained within the descending parallel?

If we see price Break structure / straight to 668 (higher probability if selling pressure builds): If the gap opens weak (sub-680 with expanding volume) and 675 fails to hold on the first test (e.g., closes below it or wicks through with no immediate bid), negative gamma will feed the move hard. Dealers would stop buying weakness and start selling it, turning the descending channel into a breakdown vehicle rather than a containment zone. The .618 Fib at 668.68 is the clean measured target (symmetry from the (a) leg low), and it's also near the lower rail projection of the descending parallel extended further. This path becomes increasingly likely if we see panic volume, VIX spike >16–17, or fresh Iran escalation headlines, no quick de-escalation. Basically, if 675 gets violated decisively, the structure shifts from "channel containment" to "impulsive (c) leg extension."

675 holds / stays in descending parallel (still plausible, especially early): If the gap opens around 680–682 and sellers lose steam into 675 (e.g., hammer/doji + volume spike + higher low), we could see absorption and a bounce attempt back toward the descending channel midline (685–690) or even a retest of the flip zone. This keeps the new descending parallel intact as the controlling structure, turning Monday into a "test the lower rail and bounce" day rather than a free-fall. Odds of this (40–50%) increase if macro headlines soften (diplomacy signals), dip-buyers defend 675 hard, or we see short-covering on oversold RSI readings. In this case, the channel acts as a temporary floor until the next catalyst decides whether it's distribution or stabilization.

Bottom line: A gap to 680 sets up 675 as the first real test Monday, likely hit intraday, and the odds tilt toward a break lower if momentum carries (negative gamma + distribution signals + geopolitical fuel). But 675 is a legitimate absorption zone with confluence, so a hold-and-bounce isn't off the table, especially if buyers show up with size. Watch the first 30-60 minutes reaction at 680-675 for the tell: violent breakdown = 668 in play fast; absorption/higher low - channel containment and potential mean-reversion attempt.