The Nasdaq lost three and a half percent, the dip got bought, and the skew went to work pricing the next five sessions as binary. Puts got expensive, calls stayed cheap, and short interest is at a sixteen-year high.
It was a turbulent week, and the tape and the vol surface told the same story from two directions. AI and semiconductor names led a broad selloff, oil spiked above 100 dollars a barrel midweek and rekindled the inflation trade, positioning cracked, and then Friday steadied. The $SPX finished the week down 1.28 percent, the $NDX down 3.52 percent, and the Dow down only 0.52 percent. That spread is the whole story. This was not a broad risk-off. It was a concentrated de-rating of the most crowded trade in the market, and the options market spent the week repricing the tail rather than selling the house.
The week in three numbers
Look at the ranking, not the levels.
$INDU: Mon 52,224.64, Tue 52,218.58, Wed 51,711.65, Thu 51,947.25, weekly minus 0.52 percent
$SPX: Mon 7,509.20, Tue 7,498.96, Wed 7,408.30, Thu 7,411.98, weekly minus 1.28 percent
$NDX: Mon 29,155.18, Tue 28,998.10, Wed 28,454.81, Thu 28,128.34, weekly minus 3.52 percent
The Dow held up best because it carries the least AI-capex weight. The Nasdaq 100 underperformed by nearly three points against the broad index because it is the most concentrated in exactly the semiconductor and megacap names that took the hit. Wednesday was the sharpest single session, the S&P down 1.3 percent and the Nasdaq 100 down 1.9 percent, as AI jitters collided with oil above 100 dollars. Friday brought a tentative stabilization, the S&P essentially flat at plus 0.05 percent and the Dow up about half a percent, while the Nasdaq composite still slipped 0.6 percent as chipmakers sold off again.
There is a structural point underneath the tape that matters more than any one session. BTIG flagged a near-record divergence between S&P 500 price and market breadth, and attributed it to the technology sector sitting at a record-high weighting near 38 percent of the index. When one sector is more than a third of the tape, swings in a handful of trillion-dollar names drive the index level even as most stocks trade differently. The index is no longer a poll of the market. It is a poll of megacap tech with everything else along for the ride.
The VIX stayed calm, the vol-of-vol did not
Spot vol never panicked. The convexity did.
Mon Jul 21: VIX 17.05, VVIX 96.34
Tue Jul 22: VIX 16.64, VVIX 95.55
Wed Jul 23: VIX 18.70, VVIX 102.17
Thu Jul 24: VIX 18.58, VVIX 100.73
The VIX opened the week in a calm zone near 17, fell 8.6 percent on Tuesday, then spiked nearly three points on Wednesday to above 18.7 as the selloff accelerated. That is a move, not a shock. The real tell is one level up. VVIX, the volatility of volatility, surged nearly nine points on Wednesday to 102 and printed an intraday high of 108, its highest since June 10. When VVIX jumps with the VIX, someone is paying up for convexity, not just buying spot protection. The demand was for the tail, not the body.
The flow confirms it. Thursday saw 583,000 VIX contracts trade, about 79 percent of a typical day, and calls were 70.2 percent of that volume. Nomura's options desk reported heavy customer interest in VIX upside all week, naked calls, call spreads, and call butterflies. And running underneath the whole week was a recurring strip of VIX August, September and October 35 calls, roughly 52,000 by 26,000 by 26,000 lots, seen on both Tuesday and Wednesday. With the VIX sitting at 18 to 19, buying the 35 strike is not a directional bet on the next week. It is a macro tail hedge, a bet on a vol regime shift where the VIX doubles from here. That is the market's break-glass trade, and its persistence across sessions says at least one large player is not satisfied with near-term protection.
Positioning cracked, and the unwind may not be done
Citi's David Chew flagged on Monday that US index futures positioning had deteriorated sharply, with flows overwhelmingly bearish across large caps. The mechanics differ by index. The S&P 500 eased primarily through long unwinds, positions being taken off. The Nasdaq saw the more aggressive combination, long liquidation plus new short flow. Citi's warning was explicit. The unwind may not be over.
That sits on top of a loaded spring. S&P 500 short interest has climbed to roughly 3.7 percent of free float, near its highest since 2010, a sixteen-year extreme. An elevated short base cuts both ways. It is fuel for a sharp squeeze if an earnings catalyst surprises to the upside, and that risk is amplified precisely because calls are cheap relative to puts across the term structure. The setup is asymmetric. The same crowd that de-risked into the selloff is now short into a binary event window, holding cheap downside and no upside.
The dip got bought anyway
For all the selling, the flow into the broad complex was net positive.
$SPY: weekly minus 1.25 percent, plus 3.35 billion dollars of inflows
$QQQ: weekly minus 3.49 percent, plus 13.8 million dollars, essentially flat flow
$IWM: weekly minus 1.81 percent, minus 1.80 billion dollars of outflows
SPY took in 3.35 billion dollars on a down week, investors using the drop to add broad large-cap exposure. QQQ saw negligible net flow despite a 3.5 percent drawdown, no conviction either way in the Nasdaq wrapper. IWM bled 1.8 billion dollars, the clearest de-risking signal on the board and consistent with the small-cap sensitivity to rates into the Fed. On the VIX ETF side the rotation was textbook. Wednesday, the selloff day, long-VIX protection funds gained 10.2 million dollars while short-VIX funds lost 11.4 million. Tuesday added 18 million to protection. Monday, before the drama, had 10.1 million pulled from VIX ETFs and 7.94 million added to inverse-VIX, the early-week risk-on tone in one line. The hedge got put on exactly when it was needed and taken off when it was not.
Single stocks: the AI complex was the epicenter
The rotation was not subtle about where it hit.
A gauge of semiconductor firms fell 4.3 percent on Friday alone, and the group has been grinding through a rolling bear market. Nvidia, Broadcom, Samsung and SK Hynix all came under pressure. Tesla and SpaceX were hammered midweek with Elon Inc cited as a key drag, and a SpaceX risk reversal was among Monday's notable single-stock trades. The options tape around individual names told the rotation story in detail. $AMZN saw active call buying Monday and Thursday with a large call roll, upside being extended rather than closed. $GOOGL rose on a report it is building a new AI efficiency chip, with earnings the key focus into Wednesday. $ORCL fell 3.87 percent Wednesday with 30-day implied near 64.5, top quartile of the past year, and its put-call skew steepened, even as put selling was noted Monday. $AMAT dropped 1.55 percent Thursday with implied at 92.6, top decile. $GLW fell 3.27 percent Thursday, implied at 85.9, an expected daily move of 8.17 dollars. $NKE fell about 3 percent Wednesday. $AXP dropped 4.3 percent Friday after Q2 expenses jumped 12 percent.
Two structural notes stand out. Mag-7 bullish collars and Super Micro calls were prominent Tuesday, investors positioning ahead of the tech earnings wave, the same cheap-call logic the skew invites. And zero-day-to-expiry activity surged 46 percent year to date to more than 20 million contracts a day, boosted by the new Monday and Wednesday megacap expiries. The implied-versus-realized screen put First Solar, Datadog and TE Connectivity at the richest premiums, options expensive, while IBM screened cheap.
The SKEW index round-tripped through the selloff
CBOE SKEW opened the week at 151.66, a historically elevated reading and a sign of real demand for deep out-of-the-money puts. It then fell to 145.95 on Wednesday as the selloff actually materialized, before recovering to 147.28 on Thursday. That path is a classic pattern, not a contradiction. When the feared event starts to happen, some put holders take profits and the skew compresses. The partial recovery to 147 says the residual demand for protection is still there. The market has not exhaled.
Puts get richer the further out you look
Here is the single most important picture of the week. As of Friday, the SPX 25-delta put-call implied vol spread is steep at every tenor, and it widens the further out you go.
30D: 25-delta put 18.48, 25-delta call 12.10, ATM 14.54, put premium plus 6.38 points
60D: put 19.12, call 12.44, ATM 14.77, premium plus 6.68 points
90D: put 19.59, call 12.70, ATM 14.98, premium plus 6.89 points
180D: put 20.59, call 13.37, ATM 15.68, premium plus 7.23 points
360D: put 21.65, call 14.02, ATM 16.47, premium plus 7.63 points
The normalized 30-day skew, the 25-delta put vol minus the 25-delta call vol divided by the ATM, stands at 0.44. That is meaningfully elevated. It carries a dual message. The market is not positioned for a melt-up, calls are cheap because nobody is paying for upside. But that same asymmetry means call spreads into earnings are inexpensive relative to history. When 25-delta calls trade six-plus points under 25-delta puts at every tenor, the cheapest way to express an upside view is the option the market has abandoned. The Mag-7 collar structures this week are exactly that logic in size.
The fact that the 180-day skew is materially wider than the 30-day is its own signal. This is not a short-term reflex around one event. The market is hedging structurally, out past the immediate window, into the Fed's policy path through year-end and toward Jackson Hole on August 27 to 29. Susquehanna's Christopher Jacobson made the point directly, flagging Russell 2000 puts as attractive ahead of both the FOMC and Jackson Hole, citing the rates sensitivity of small caps as the key risk vector.
The FOMC spike is written into the listed expiries
Zoom into the short-dated listed SPX skew and it names the exact dates the market fears. Put implied vol jumps across the July 29 to 31 expiries, which bracket the FOMC decision on July 29.
Jul 27: 25-delta call 11.93, 25-delta put 16.37, gap plus 4.44 points
Jul 28: call 11.43, put around 15.9 to 16.0, gap about plus 4.5 points
Jul 29, FOMC: call 12.27, put around 16.8 to 17.0, gap about plus 4.7 points
Jul 30: call 13.11, put around 18.1, gap about plus 5.0 points
Jul 31: call 13.31, put around 18.5 to 18.7, gap about plus 5.4 points
The step-up in put vol from July 28 to July 30 and 31 is the point. The skew is steepest at the back end of the week, not the front. The market is not most afraid of the Fed statement itself. It is afraid of the compounding reaction into the concurrent wave of hyperscaler earnings, Microsoft, Meta and Amazon all reporting that week. It is pricing a delayed, cumulative move, not an immediate one. The put-call volume ratio on Friday sat at 1.18, still defensive but not capitulation, which would be above 1.5. Demand for downside kept outpacing calls even as the tape steadied.
What the skew is saying
Put the pieces together and the surface describes a specific regime. VIX at 18 to 19, SKEW near 147, a 30-day skew ratio of 0.44. That is a market that has repriced risk upward but has not reached panic. It is a known-unknown environment, where the size of the event is priced but the direction is not. Three reads fall out of it.
The FOMC and hyperscaler earnings are the fulcrum. The near-dated put skew steepening into July 29 to 31 is unambiguous about which dates matter. A dovish Fed surprise or strong Microsoft and Meta beats could trigger a rapid skew compression and a squeeze, with short interest at a sixteen-year high supplying the fuel. A hawkish hold or an earnings disappointment likely pushes the VIX back toward 20 to 22 and validates the tail hedges.
Calls are cheap, and that is an opportunity, not just an observation. With 25-delta calls trading six-plus points below puts across the curve, upside positioning is priced attractively for anyone who wants it. And the VIX 35-call strip is the tell that at least one large player is hedging a regime shift, not a wobble. When the cheap calls and the expensive tails are both in the same surface, the market is telling you it does not know which way, only that the move is coming.
The one-line read
The skew surface is telling you the next five to seven sessions are binary. The options market has priced a meaningful move in either direction, puts are expensive, calls are cheap, and short interest is at a sixteen-year high. The resolution of the FOMC and the hyperscaler earnings will decide whether this week's selloff was a positioning reset before the bull trend resumes, or the first leg of a more sustained de-rating of AI-driven multiples. The vol surface has already placed its bets on both outcomes. Watch the July 30 and 31 expiries. That is where the market put its money.
Djellal Djouad
Sources: Bloomberg and Barron's, week of July 21 to 25, 2026. Stock Slide Extends on AI Jitters, Oil Above 100, Markets Wrap (Jul 24). Markets Settle Down After Volatile Week (Jul 25). S&P 500 Wavers as Oil Decline Offsets Chip Selloff, Markets Wrap (Jul 24). S&P 500 Price-Breadth Divergence Near Record High, BTIG Says (Jul 20). Massive VIX Call Spreads, Amazon Calls Roll, US Options Snapshot (Jul 23). Mag-7 Bullish Collars, Super Micro Calls, US Options Snapshot (Jul 22). Amazon Call Buying, Junk Bond ETF Hedge, US Options Snapshot (Jul 21). SpaceX Risk Reversal, Oracle Put Selling, US Options Snapshot (Jul 20). Citi's Chew Says US Stock Positioning Unwind May Not Be Over Yet (Jul 21). S&P 500 Short Interest Nears Highest Since 2010 (Jul 22). Short VIX ETF Daily Outflows 11.4M, Long-VIX Funds Gain 10.2M (Jul 23). VIX ETF Daily Inflows 18M (Jul 22). VIX ETF Daily Outflows 10.1M (Jul 21). Elon Inc Selloff, Mag 7 Impact, US Stocks Insights (Jul 24). ORCL, AMAT, GLW, NKE Cboe options sentiment (Jul 23 and 24). Datadog, TE Connectivity Volatility High vs S&P 500, IBM's Low (Jul 22). Options, The Striking Price, Trade Options When Others Are Fearful (Jul 24). Rising Demand for Hedges Hints at Volatility Ahead, Taking Stock (Jul 20). Micron Puts Bought, Comcast Puts Sold, US Options Snapshot (Jul 24). Cboe for VIX, VVIX, SKEW and the SPX skew term structure. SpotGamma for the gamma read. Nomura and Susquehanna derivatives strategy.
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