SPX GEX LEVELS: Jul 17
We've tracked three complete build-shed cycles over the last ten sessions. Each one more aggressive than the last.
Over the last ten trading sessions, the blanket has been running through a repeating cycle: it builds for 2-3 sessions, peaks, then a single session of aggressive put buying strips 40-78% of it in one day. Then it rebuilds and the cycle repeats.
🚨🚨Here are the three cycles:
Cycle 1 (Jul 6-8). Blanket built from +$385M to +$796M over two sessions. Iran strikes hit overnight. Single session shed: -46%. Flip cushion narrowed to 36 points. Result: absorbed, rebuilt over two sessions, reached +$1.11B.
Cycle 2 (Jul 9-13). Blanket peaked at +$1.11B. Pre-CPI and earnings hedging hit. Single session shed: -64%. Flip cushion narrowed to 48 points. Result: CPI and earnings came in clean, blanket rebuilt to +$895M in two sessions.
Cycle 3 (Jul 15-16). Blanket peaked at +$895M. No obvious catalyst. Single session shed: -78%. Flip cushion narrowed to 10 points. This is where we are now.
The pattern that matters: each shed is getting deeper. 46%, then 64%, then 78%. And the cushion between spot and the flip is getting tighter at each trough. 36 points, then 48, then 10.
The first two cycles had clear catalysts, Iran strikes and CPI hedging. Today's shed didn't have one. When the blanket thins without a headline, it means the selling is coming from positioning behavior, not event hedging. Institutions are loading puts at spot because they want downside protection at this level, not because they're bracing for a specific event.
The most important change: the max accelerator moved to 7,515. That's 19 points below the close. During the stable suppression regime, the max accelerator sat at 7,000-7,300, hundreds of points away and structurally irrelevant. During the June oscillation, it moved to 7,200-7,400 near spot. Today it's at 7,515. The heaviest concentration of downside gamma is right under your feet.
The put buying at 7,500 today was -$116M in new put gamma, the heaviest single-strike put flow since the oscillation broke on June 29. The 7,450 accelerator tripled from -$31M to -$93M. The accelerator cage from 7,450 to 7,525 now carries -$320M. That infrastructure wasn't there 48 hours ago.
This is NOT the oscillation. The regime hasn't flipped negative. During the oscillation, GEX went to -$141M, -$452M, -$531M, -$618M. Today it's +$193M. The structure is positive. But it's the thinnest positive reading since the oscillation ended, and the flip is 10 points from spot — the narrowest cushion since June 26.
Trump speaks shortly. With Hormuz at "severe" and the Iran MOU strained, a presidential address is a vol event that institutions hedge ahead of. If the speech passes without an escalation, the puts that built today lose their reason and the hedging decays into OPEX. That's the same pattern as last week: CPI fear priced, CPI passed clean, blanket snapped back 61% in one session. A shed with a catalyst resolves when the catalyst passes. A shed without one is structural. Tomorrow tells us which this is.
What makes tomorrow important: OPEX. The near-dated puts at 7,500-7,525 that drove today's shed expire tomorrow. If the OPEX clears them the way it cleared the 7,400 puts on June 27, the blanket rebounds and the cycle resets with a new build phase. If the OPEX doesn't clear enough gamma and institutions reload immediately, the pattern is tightening further and the regime is at risk of flipping negative for the first time since June 29.
The magnets above are still intact. 7,550 at +$138M. 7,575 at +$106M. 7,600 at +$81M. The call positioning that supports the upside hasn't been unwound. The structure is bifurcated: a wall of puts from 7,450 to 7,525 below spot, and a wall of calls from 7,550 to 7,700 above. The tug of war is concentrated in a 100-point zone around the close.
What we're watching. The build-shed cycle is running faster. The sheds are going deeper. The cushion is getting thinner. The accelerators are moving closer to spot. None of these trends have broken the regime yet. But three cycles is a pattern, not a coincidence. If the OPEX resets the cycle, the structure gets another build phase. If it doesn't, the series enters its most fragile state since the oscillation.
Friday's expected range: 7,475 – 7,575. The flip at 7,524 is 10 points below. OPEX drains near-dated gamma. The 7,550 magnet at +$138M pulls from 16 points above. Direction depends on whether the OPEX clears the 7,500-7,525 puts or institutions reload through them.
Structural floor: 7,524 (-0.1%) near / 6,910 (-8.3%) deep.
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