SP500 on the Vantage Cash CFD is at 7,399.70 as of 08:27 UTC on 18 May 2026, nearly flat on the day after a session that started with a 60-point drop and clawed most of it back. The story is not just what happened this morning. Wednesday is the bigger story.

After Friday’s close, Moody’s downgraded the US long-term sovereign credit rating from Aaa to Aa1, the first time the agency had cut the US from its top rating.^[1] The SP500 fell more than 1% at the open, then recovered nearly all of it.^[2] Markets have moved on. Nvidia earnings on 20 May are now the dominant variable, with the chipmaker’s $5.7 trillion market cap per CNBC making its results a macro event for the entire index.^[7][8]

All prices refer to the Vantage S&P Index Cash CFD as of 08:27 UTC on 18 May 2026. Charts are from TradingView via Vantage and are indicative. CFD prices may differ from the underlying S&P 500 index. This is not financial advice.

Key Points

• The Vantage SP500 CFD dropped approximately 60 points from its session open near 7,420 to a session low around 7,360, coinciding with the Monday open reaction to Moody’s downgrade. By 08:27 UTC it had recovered to 7,399.70, nearly erasing the move.
• Nvidia reports Q1 fiscal year 2027 earnings after the close on 20 May.^[3][9] The company guided for $78 billion in revenue; Wall Street consensus sits at $78.8 billion with EPS of $1.77. Per FactSet, Nvidia is expected to contribute approximately 12.5% of the S&P 500’s year-over-year earnings growth for the quarter.^[4]
• 84% of S&P 500 companies reporting Q1 2026 results beat EPS estimates, with earnings 20.7% above consensus on aggregate per FactSet, the strongest positive surprise rate since Q1 2021.^[5] A strong earnings season raises the bar for what markets will treat as a genuine Nvidia beat.

What the SP500 chart is showing

The 1-minute chart on the Vantage CFD feed shows three phases. The index opened near 7,420 and dropped sharply to a session low of approximately 7,360 by 00:30 UTC, consistent with the market opening to the Moody’s headline. It then consolidated between 7,364 and 7,382 through the Asia session before a sharp recovery spike around 07:00-07:30 UTC carried the SP500 price back to 7,399.70. Volume on the Vantage feed was elevated on both the down move and the recovery.

What is driving the SP500 today

Moody’s downgrade: absorbed faster than expected

Moody’s cut the US sovereign rating from Aaa to Aa1 after Friday’s close, citing rising fiscal deficits and a $36 trillion debt pile.^[1] It was the last of the three major agencies to do so, following S&P in 2011 and Fitch in 2023. Treasury Secretary Scott Bessent described credit ratings as “lagging indicators” in an interview on NBC News’ Meet the Press.^[6] The speed of the SP500’s recovery appears to suggest the downgrade was widely anticipated. The more persistent risk is whether higher Treasury yields become a sustained drag on growth stocks through the week.

Nvidia earnings: the SP500’s Wednesday test

Per CNBC, Nvidia’s market cap reached approximately $5.7 trillion as of mid-May, making it the index’s largest single component.^[7] The company reports Q1 fiscal year 2027 results after Wednesday’s close. Nvidia has beaten earnings estimates for at least four consecutive quarters. The structural question is not whether it beats the $78.8 billion consensus, but by how much. With the stock near all-time highs, markets may require a significant upside surprise to extend the rally from here.^[3]

Key levels to watch

Reference zones on the Vantage SP500 CFD today. These are not trade signals.

Table 1: Vantage S&P Index Cash CFD reference levels as of 08:27 UTC, 18 May 2026. Sources: TradingView, FactSet, Investing.com. CFD prices indicative.

What to watch this week

• Nvidia earnings, 20 May after close: The dominant event for the SP500 this week. Consensus expects $78.8 billion in revenue and $1.77 in adjusted EPS. Whether a beat moves the index or is treated as already priced will be clear from the after-hours reaction.^[3][9]
• US Treasury yields, ongoing: The Moody’s downgrade initially pushed 30-year yields above 5%. If yields remain elevated through the week, the discount rate pressure on technology and growth stocks (the heaviest SP500 components) becomes a sustained headwind.
• FOMC minutes, approximately 20 May: Per CNBC, the April FOMC vote split 8-4, with three regional presidents (Hammack, Kashkari, and Logan) voting against easing bias language and Governor Miran dissenting for a cut. Markets are watching the minutes for confirmation of how entrenched the hawkish view has become.

On risk management: the Vantage SP500 CFD moved approximately 60 points from open to session low this morning. Many traders may monitor the 7,350-7,360 support zone and the 7,420 open level closely ahead of Wednesday’s Nvidia report. If you are holding correlated positions across Nasdaq, gold, and the SP500, check combined exposure before Wednesday’s close.

Leverage cuts both ways. Position sizing relative to account equity matters more than usual when a $5.7 trillion stock reports earnings mid-week.

RISK WARNING: CFDs are complex financial instruments and carry a high risk of losing money rapidly due to leverage. You should ensure you fully understand the risks involved and carefully consider whether you can afford to take the high risk of losing your money before trading.

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References

[1] “Moody’s Ratings Downgrades United States Long-Term Ratings to Aa1 – Moody’s.” https://ratings.moodys.com/ratings-news/443154 Accessed 18 May 2026.

[2] “What Does the Moody’s Rating Downgrade Mean for the Economy? – ABC News.” https://abcnews.go.com/Business/moodys-rating-downgrade-economy/story?id=121944070 Accessed 18 May 2026.

[3] “Nvidia Could Make a Big Move by May 20 – Motley Fool.” https://www.fool.com/investing/2026/05/13/nvidia-could-make-a-big-move-by-may-20-heres-what/ Accessed 18 May 2026.

[4] “Nvidia Is Getting Some Help as It Props Up S&P 500 Earnings Growth – CNBC.” https://www.cnbc.com/2026/05/18/nvidia-is-getting-some-help-as-it-props-up-sp-500-earnings-growth.html Accessed 18 May 2026.

[5] “S&P 500 Earnings Season Update: May 1, 2026 – FactSet.” https://insight.factset.com/sp-500-earnings-season-update-may-1-2026 Accessed 18 May 2026.

[6] “Scott Bessent Calls Moody’s a ‘Lagging Indicator’ After US Credit Downgrade – NBC News.” https://www.nbcnews.com/politics/trump-administration/scott-bessent-calls-moodys-lagging-indicator-us-credit-downgrade-rcna207535 Accessed 18 May 2026.

[7] “Nvidia’s Trillion-Dollar Run Puts Pressure on the Bulls – CNBC.” https://www.cnbc.com/2026/05/15/nvidias-trillion-dollar-run-puts-pressure-on-the-bulls.html Accessed 18 May 2026.

[8] “Why Nvidia Earnings May Matter More to S&P 500 Than Fed Minutes – Benzinga.” https://www.benzinga.com/markets/tech/26/05/52525316/why-nvidia-earnings-may-matter-more-to-the-sp-500-than-fed-minutes Accessed 18 May 2026.

[9] “Nvidia Q1 FY2027 Earnings Report as Key Catalyst for S&P 500 – IndexBox.” https://www.indexbox.io/blog/nvidia-earnings-on-may-20-to-drive-sp-500-and-ai-stock-momentum/ Accessed 18 May 2026.