NoVo Analyst · Pre-Market Primer

BOTTOM LINE: The SPY enters the cash open with a heavy bearish bias, gapping down over 1% as a robust domestic housing starts report forces a aggressive hawkish repricing of near-term Federal Reserve policy. THE SETUP Global markets are actively distributing risk as the pre-market session accelerates a deep downward trend beneath the overnight volume-weighted average price (VWAP) of 7518.16. Today's primary catalyst is a sharp 19.0% surge in June housing starts to a seasonally adjusted annual rate of 1.427 million, which handily cleared consensus expectations of 1.31 million. While forward-looking building permits fell 3.0% to 1.367 million, the massive physical construction print—compounded by yesterday's robust industrial metrics—has driven September rate hike expectations to a 51% probability. This hawkish shift is forcing aggressive deleveraging across equity index futures ahead of the cash open. DEALER POSITIONING The options market is operating in a highly vulnerable negative gamma regime, with net GEX sitting at -$1.8B. In this environment, market makers do not act as a stabilizer to absorb intraday volatility; instead, they are forced to sell into weakness and buy into strength, which mechanically amplifies directional price swings. The critical structural pivot is the Zero-Gamma flip level at $743.20. Because the SPY is gapping below this threshold at $742.86, dealer hedging flows will actively accelerate downside momentum unless buyers can quickly reclaim the flip level. The broader options book is heavily tilted toward downside protection, with puts firmly bid and the primary put wall concentrated at $740.00. LEVELS TO WATCH For sellers to maintain control and drive a continuation lower, they must reject any relief rallies below the Zero-Gamma flip level of $743.20 and push price through the pre-market low of $742.58. A clean break below $742.58 opens a direct path to test major support at the $740.00 put wall, where massive dealer hedging could trigger a localized pause or a sharp acceleration if breached. Conversely, if buyers can establish price acceptance back above the $743.20 flip level, it will neutralize the immediate negative feedback loop and allow for a steady counter-trend run toward the pre-market high of $745.82 and the gravity magnet at $747.31. EVENT PLAYBOOK — Monthly OPEX A large tranche of options gamma expires at today's 4:00pm close. Expect the current gamma pins to hold into the print, then LOOSEN as that gamma rolls off — the dealer map resets for next week, and moves that were being dampened can free up afterward. The pins into the close: Call Wall $755.00 / Put Wall $740.00. Today's expected move: ±$8.18 (±1.1%). Positioning context, not a signal. DEALER POSITIONING MAP · SPY / QQQ / SPX Vol environment: VIX 18.7 — 71th percentile of the past year (elevated vol). SPY $742.84 Net GEX: -$1.8B · negative — dealers amplify moves (moves extend) Zero-Gamma (flip): $743.20 Gravity (magnet): $747.31 Call Wall: $755.00 Put Wall: $740.00 Expected move: ±$8.18 (±1.1%) today · ±$19.53 (±2.6%) this week Put/Call skew: +3.1 vol pts · puts bid — downside hedging demand MM skew · fast +3.1 / slow +2.3 vol pts · near-term fear building vs the baseline ATM IV: 17.5% QQQ $691.93 Net GEX: -$2.5B · negative — dealers amplify moves (moves extend) Zero-Gamma (flip): $695.95 Gravity (magnet): $699.97 Call Wall: $720.00 Put Wall: $690.00 Expected move: ±$14.82 (±2.1%) today · ±$33.13 (±4.8%) this week Put/Call skew: +7.6 vol pts · puts bid — downside hedging demand MM skew · fast +7.6 / slow +5.6 vol pts · near-term fear building vs the baseline ATM IV: 34.0% SPX $7,519.68 Net GEX: -$24.7B · negative — dealers amplify moves (moves extend) Zero-Gamma (flip): $7,544.19 Gravity (magnet): $7,497.43 Call Wall: $7,580.00 Put Wall: $7,515.00 Expected move: ±$143.68 (±1.9%) today · ±$321.29 (±4.3%) this week Put/Call skew: +37.4 vol pts · puts bid — downside hedging demand MM skew · fast +37.4 / slow +2.7 vol pts · near-term fear building vs the baseline ATM IV: 30.3% Zero-Gamma = where dealer hedging flips from dampening to amplifying moves. Call/Put Walls = the largest call/put gamma strikes (pin / resistance above, support below). Expected move = the ±1σ range priced into at-the-money options. Public options data — analysis, not signals. FLOW DYNAMICS Charm — a large gamma tranche expires at today's close, so dealer delta-hedging intensifies into it: the classic OPEX pin toward the nearest wall, which then releases afterward. Vanna — with dealers short gamma, a drop in vol would ease the amplification and let the tape settle. Second-order dealer flow — context, not a signal.