2026-07-31-options-brief-index-up-average-stock-down-header

Index up, average stock down - Options Brief - 31 July 2026

Options 10 minutes to read

Summary:  Microsoft added a record USD 450bn of market value in one session and pulled the index up 1.66%. The average S&P 500 member still finished lower, and the volatility surface noticed before the tape did.


MARKET REGIME: TRANSITIONING (MIXED SIGNALS)  |  VIX 17.09  |  TERM STRUCTURE: CONTANGO  |  SKEW: MODERATE (139.90)  |  FRONT-MONTH VIX FUTURES: 18.60

  • Breadth did not follow the index. The S&P 500 rose 1.66% to 7,437.63 while its equal-weighted version fell 0.20%. Microsoft added 15.5% and Meta lost 7.95% in the same session.
  • The front end unwound. VIX fell 17.3% to 17.09 and VIX1D dropped 27.3% to 14.14, handing back most of this week’s correction premium in a single session.
  • Premium came out for the first time this week. Index options price 143 points into next Friday’s expiry, against 171 yesterday for the same expiry. Flat volatility and the clock alone would have left roughly 158.

Vol surface data: Saxo, Bloomberg, CBOE, as of 31 July 2026, approx. 06:00 CET. Past performance is not indicative of future results.


Headline driver

A Microsoft cloud beat set off a chip-led rebound that snapped the Nasdaq’s six-day losing streak and carried into a record Asian session, while the Bank of Japan held at 1.00% after a suspected intervention in the yen. Full macro rundown in Saxo’s Market Quick Take – Chips roar back as Nasdaq snaps its skid, BOJ holds, 31 July 2026.


Market snapshot, Thursday 30 July 2026 close

  • US (Thursday 30 July close): the S&P 500 gained 1.66% to 7,437.63 and the Nasdaq 100 3.36% to 28,106.35, both ending a six-day losing streak, with the Dow up 1.2% to 52,208. Microsoft rose 15.5%, its best day since October 2008, adding a record roughly USD 450bn in market value after Azure growth accelerated to 43% year on year. The Philadelphia Semiconductor Index gained more than 9%. Against that, the equal-weighted S&P 500 fell 0.20%, Meta lost 7.95% and communication services dropped 2.68%.
  • Europe: Stoxx 600 +0.77% to 649.96 on a heavy earnings day, Euro Stoxx 50 +1.53%, DAX +0.60% to 25,612, CAC 40 +0.92%. The FTSE 100 slipped 0.09%.
  • Asia, Friday morning: the KOSPI opened roughly 14% higher near 6,372, with SK Hynix and Samsung both up more than 20%, and the Nikkei 225 added about 5%. Hong Kong was close to flat, CSI 300 +1.24%.
  • Commodities and rates: October Brent eased toward USD 85 after Thursday’s high above USD 89, and September WTI traded near USD 81.60. Gold slipped below USD 4,100, still inside the range of the past six weeks. The 10-year Treasury yield fell two basis points to 4.65% and the 30-year drifted to 5.19%, away from the 19-year high set after the FOMC meeting. Costs and charges apply to ETF trades; see Saxo pricing for full details.
  • Market regime (rules based read): Transitioning, mixed signals. VIX 17.09, 20-day realised volatility 11.9% and falling, S&P 500 0.42% below its 50-day moving average.

Source: Saxo, Bloomberg, CBOE, 31 July 2026. Past performance is not indicative of future results.


Options flow sentiment

Based on end-of-day 30 July, yesterday’s positioning and not today’s price action.

  • Single-name flow: the cleanest opening interest sat on the call side, in long-dated in-the-money strikes on the session’s winners, which is the shape of stock replacement rather than fresh directional risk. Put premium was larger in aggregate but mostly deep in-the-money and printed at mid, and in our view that reads as rolling and financing rather than bought protection.
  • Sector and ETF flow: long-dated call demand in index and country ETFs sat alongside dated downside in the semiconductor and credit ETFs, with nearer-dated premium sold against it. The pattern may suggest protection being bought at the long end and funded at the front.

Volatility surface – 31 July 2026, approx. 06:00 CET

VIX term structure

  • VIX spot 17.09 (-17.28%)
  • VIX1D 14.14 (-27.30%) · VIX9D 14.85 (-27.13%), both now well below the 30-day
  • VIX3M 19.50 (-9.30%) · VIX6M 21.61 (-6.29%) · VIX1Y 23.12 (-4.03%), an upward slope that steepens through the long end

VIX futures

  • Front-month VIX futures 18.60 (-0.91%), a 1.51 point premium to spot, against a 0.61 point discount yesterday
  • Second-month VIX futures 19.57 (-0.55%), front-to-second ratio at 0.950, deeper contango than yesterday’s 0.980

Skew and correlation

  • CBOE SKEW 139.90 (+0.25%), essentially unchanged and still far above the 100 to 120 neutral zone
  • COR3M 10.20 (-21.48%), the 3-month implied correlation across S&P 500 constituents
  • DSPX 42.89 (-1.11%), the S&P 500 dispersion index. Equity put/call ratio 0.887, index put/call 0.996

Other vol measures

  • VVIX 94.66 (-13.53%) · MOVE 77.09 (+3.93%)
  • VXN 27.55 (-10.67%), holding a 1.61 ratio to VIX, up 8.00% on the session
  • GVZ 24.48 (-0.65%) · OVX 63.44 (-6.14%) · RVX 21.19 (-11.52%) · VXD 14.38 (-16.59%)

Source: Saxo, Bloomberg, CBOE, 31 July 2026.


What the market is pricing

  • In our view the market removed premium for the first time this week. Yesterday’s reading for next Friday’s expiry was 171 points with seven sessions remaining. Flat volatility and the passage of time alone would leave about 158 points today, and index options are pricing 143 points (1.91%). Both figures are derived from at-the-money option-implied pricing rather than a forecast. Three consecutive sessions of premium building reversed in one. Options carry a high risk of rapid loss and are not suitable for every investor.
  • The near-dated range has compressed hard. Index options price roughly 50 points (0.68%) into today’s expiry, and VIX1D at 14.14 now sits 2.95 points below the 30-day VIX after a week spent above it. That gap may indicate participants treat this week’s macro and earnings cluster as behind them.
  • Correlation read. COR3M at 10.20 after a 21.48% one-day fall, alongside DSPX at 42.89, is consistent with a market pricing calm at the index level and movement at the single-name level at the same time. See Saxo pricing for costs and applicable charges.
  • The level reset, the shape did not. SKEW closed at 139.90, up 0.25%, while VIX fell 17.28%, so the relative price of downside strikes against at-the-money is where it was during the selloff. Bond volatility did not join the reset, with MOVE up 3.93% to 77.09.

An index that moved without its members

Three-month implied correlation across S&P 500 constituents fell 21.48% to 10.20, while the dispersion index held near 42.89. Those two figures describe the same condition from opposite ends: large expected moves in individual companies, small expected moves in the index that holds them.

Thursday delivered exactly that. Microsoft rose 15.5% and Meta fell 7.95% in the same session, technology gained 5.50% while communication services lost 2.68%, and the equal-weighted index finished lower while the cap-weighted version gained 1.66%.

For anyone positioning in options the distinction matters, because index volatility and single-stock volatility stopped moving together. VIX fell 17.28%, yet the Nasdaq 100 volatility index widened its ratio to VIX by 8.00% to 1.61. In our view that combination may argue that what is left of this week’s risk sits at the single-name level rather than in the index. Options carry a high risk of rapid loss and are not suitable for every investor. See Saxo pricing for costs and applicable charges.


Today’s catalysts

Bank of Japan Governor Ueda’s press conference has already run in Tokyo. The US Q2 employment cost index lands at 14:30 CET, the July Chicago PMI at 15:45 CET, and the final July University of Michigan sentiment reading at 16:00 CET. ExxonMobil, Chevron, AbbVie, Linde, Moderna, Cboe Global Markets and Kioxia report today, closing a heavy earnings week.


Conclusion

In our assessment the story this morning sits in where the volatility came out, rather than in the size of the rebound. The index-level reset was close to total, with VIX, VIX1D and implied correlation all sharply lower, while the Nasdaq volatility premium widened and the skew of the distribution barely moved. That mix may suggest the market has priced this week’s macro cluster as resolved without concluding that the gap between individual names is finished. Today’s data lands into a tape that has already given back most of its hedges, and options carry a high risk of rapid loss that is not suitable for every investor. Past performance is not indicative of future results.


Important note: The strategies and examples provided in this article are purely for educational purposes. They are intended to assist in shaping your thought process and should not be replicated or implemented without careful consideration. Every investor or trader must conduct their own due diligence and take into account their unique financial situation, risk tolerance, and investment objectives before making any decisions. Remember, investing in the stock market carries risk, and it’s crucial to make informed decisions.

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