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ActuTrading

S&P 500 & Nasdaq: US indices and tech mega-caps

The S&P 500 (500 largest US caps) and Nasdaq Composite (~3,000 tech-dominated names) are the world's 2 reference indices. Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet alone weigh 30-35 % of the S&P 500. Earnings seasons, Fed and AI drive their moves.

S&P 500 vs Nasdaq: the key differences

The S&P 500 groups the 500 largest US-listed capitalizations (NYSE and Nasdaq combined). Created in 1957 by Standard & Poor's, it's weighted by free-float market cap, with no explicit cap — Apple and Microsoft have each weighed over 7 % at various times. The index covers all sectors: tech, healthcare, finance, energy, consumer, industrial.

The Nasdaq Composite lists ALL stocks listed on the Nasdaq exchange (~3,000 stocks), dominated 50+ % by tech (Apple, Microsoft, Nvidia, Alphabet, Meta, Amazon, Tesla, Broadcom). More volatile than S&P 500, it outperforms during "risk-on" phases (2017, 2020, 2023-24) and underperforms during corrections (2000, 2008, 2022).

The Nasdaq 100 (not to be confused) only includes the top 100 non-financial names from the Nasdaq Composite. It's the index tracked by QQQ, TQQQ ETFs and the basis for most options.

Over 20 years (2006-2026), annualized return with dividends reinvested: - S&P 500: ~9 %/year - Nasdaq 100: ~13 %/year (higher volatility) - CAC 40: ~5 %/year

The Magnificent 7: who actually dominates?

Since 2023, "Magnificent 7" refers to the 7 mega-caps that alone drive half the S&P 500's performance: Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet (Google), Tesla.

In 2026, they weigh together: - ~30-35 % of S&P 500 (historic concentration) - ~50 % of Nasdaq 100 - ~25 % of global listed equity market cap

Key catalysts 2025-2026: 1. Nvidia — AI data centers, monopoly on H100/B200/GB200 GPUs 2. Microsoft — Azure + OpenAI Copilot, enterprise SaaS 3. Alphabet — Gemini vs ChatGPT, search dominance 4. Meta — open-source Llama, Reels monetization, Quest vision 5. Apple — Services growth, on-device AI 6. Amazon — AWS + e-commerce, retail logistics 7. Tesla — less dominant 2025-26, challenged by BYD, robotaxi uncertain

Risk: extreme concentration. If 2-3 of these giants face a shock (regulation, monopoly loss, cyberattack), the entire US market drops.

How to invest in the S&P 500 from France

The S&P 500 is NOT eligible for PEA (which requires European stocks). You need a standard brokerage account (CTO) or life insurance with UC units.

4 common vehicles:

  1. S&P 500 USD ETF (simplest) — iShares Core S&P 500 (CSPX / IUSA on Euronext Amsterdam), Vanguard S&P 500 (VUSA), SPDR S&P 500 (SPY5). Fees 0.05-0.07 %/year. USD holding, automatic EUR conversion on sale.
  1. S&P 500 EUR hedged ETF — iShares S&P 500 EUR Hedged (IUSE). Neutralizes USD/EUR currency risk, costs 0.10 %/year more. Relevant if you expect dollar to decline.
  1. Individual stocks — buy Apple, Nvidia, Microsoft directly. More control, more monitoring. Via Interactive Brokers, Trade Republic, Degiro (fees from €1-2/order).
  1. PEA-eligible S&P 500 (hack) — 2-3 synthetic PEA-eligible ETFs replicate the S&P 500 via legal swap: Amundi S&P 500 PEA (PE500). Higher fees (0.15 %/year), but you gain PEA tax exemption after 5 years on gains. Over 10 years that largely offsets the fees.

French tax: on standard brokerage, dividends + gains at 30 % flat tax. On eligible PEA, full capital gains tax exemption after 5 years, only 17.2 % social contributions due.

Latest news on S&P 500 & Nasdaq: US indices and tech mega-caps(20)

Apple is investing $30 billion in Broadcom over several years
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Apple is investing $30 billion in Broadcom over several years

Apple has committed $30 billion to Broadcom to secure its chip supply. The Colorado plant will ramp up production.

Rédaction ActuTradingil y a 10 jours
SpaceX Joins the Nasdaq 100, and Wall Street Goes Wild
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SpaceX Joins the Nasdaq 100, and Wall Street Goes Wild

SpaceX's imminent inclusion in the Nasdaq 100 index is already attracting institutional investors. Elon Musk's company is gaining credibility on Wall Street.

Rédaction ActuTradingil y a 11 jours
Apple is looking to buy Chinese CXMT chips and is rising in pre-market trading
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Apple is looking to buy Chinese CXMT chips and is rising in pre-market trading

Apple's stock surges in pre-market trading following reports that it has applied for permission to purchase chips from Chinese manufacturer CXMT. This marks a major strategic shift.

Rédaction ActuTradingil y a 19 jours
Forward Industries is proposing a takeover by Solana
Crypto

Forward Industries is proposing a takeover by Solana

Forward Industries, a Nasdaq-listed company, is proposing a merger with a firm specializing in the Solana ecosystem. This marks a surprising shift toward crypto for this traditional manufacturer.

Rédaction ActuTradingil y a environ 1 mois
SpaceX surpasses $200 billion on the Nasdaq and is hot on Amazon's heels
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SpaceX surpasses $200 billion on the Nasdaq and is hot on Amazon's heels

Within just a few hours of trading, SpaceX surpassed a market capitalization of $2 trillion and joined the top three U.S. tech giants. Amazon is now within reach.

Rédaction ActuTradingil y a environ 1 mois
Goldman Sachs predicts a hit to the S&P 500's profitability due to AI
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Goldman Sachs predicts a hit to the S&P 500's profitability due to AI

Goldman Sachs is analyzing the impact of massive investments in AI on the profitability of S&P 500 companies. The findings may come as a surprise.

Rédaction ActuTradingil y a environ 1 mois
Netflix appoints Jay Hoag as president and replaces Reed Hastings
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Netflix appoints Jay Hoag as president and replaces Reed Hastings

Jay Hoag, a long-time Netflix director, is becoming chairman of the board. Reed Hastings is stepping down from the role but will remain on the board.

Rédaction ActuTradingil y a environ 1 mois
Meta announces a dividend of $0.525 per share for Q2 2026
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Meta announces a dividend of $0.525 per share for Q2 2026

Meta Platforms is paying a dividend of $0.525 per share for the second quarter of 2026. This continuity is reassuring to shareholders following the program’s launch in 2024.

Rédaction ActuTradingil y a environ 2 mois
Bitcoin rebounds above $77,000 amid hopes for peace with Iran
Crypto

Bitcoin rebounds above $77,000 amid hopes for peace with Iran

Bitcoin is rebounding and has once again surpassed $77,000. The reasons behind this include hopes for a deal with Iran and Nasdaq’s plans for crypto options.

Rédaction ActuTradingil y a environ 2 mois
Eric Richard Remer sold 3,210 shares of EverCommerce for $224,000
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Eric Richard Remer sold 3,210 shares of EverCommerce for $224,000

Eric Richard Remer, Chief Legal Officer of EverCommerce, has just sold 3,210 shares on the Nasdaq for $224,000. Is this a bearish signal or simply portfolio management?

Rédaction ActuTradingil y a environ 2 mois
Washington is allocating billions to boost AI exports
Économie

Washington is allocating billions to boost AI exports

The Trump administration is preparing a massive funding program to boost U.S. exports of artificial intelligence. The tech war is heating up.

Rédaction ActuTradingil y a environ 2 mois
Hope Bancorp Breaks Above Its 200-Day Moving Average: Beware of a Trap
Économie

Hope Bancorp Breaks Above Its 200-Day Moving Average: Beware of a Trap

Hope Bancorp has just broken above its 200-day moving average. This is a technical signal that is often overinterpreted by traders and can hide a trap.

Rédaction ActuTradingil y a environ 2 mois
Costco surges to $1,070 after raising its dividend by 13%
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Costco surges to $1,070 after raising its dividend by 13%

The U.S. retail giant hit an all-time high of $1,070 after raising its quarterly dividend by 13%. Investors are welcoming this cash-rich move.

Rédaction ActuTradingil y a environ 2 mois
Zillow's CFO sells 9,172 shares under a regulated plan
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Zillow's CFO sells 9,172 shares under a regulated plan

Zillow's CFO has just sold 9,172 shares under a 10b5-1 plan. This was a pre-scheduled sale that raises no red flags, but the timing is noteworthy.

Rédaction ActuTradingil y a environ 2 mois
SpaceX splits its stock 5-for-1 ahead of its initial public offering
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SpaceX splits its stock 5-for-1 ahead of its initial public offering

SpaceX shareholders approve a 5-for-1 stock split. The share price drops from $526.59 to $105.32 ahead of the historic IPO scheduled for June 12 on the Nasdaq.

Rédaction ActuTradingil y a 2 mois
Oil prices top $110, dragging tech stocks down
Matières Premières

Oil prices top $110, dragging tech stocks down

Oil prices have surpassed $110, while Nasdaq 100 futures are down 0.6% following OpenAI's struggles to attract new users and meet its sales targets.

Rédaction ActuTradingil y a 2 mois
Apple jumps 3% on record Q3 sales forecasts
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Apple jumps 3% on record Q3 sales forecasts

Apple is up 3% to $279.55 in pre-market trading. The company is projecting 14% to 17% growth in the third quarter, well above Wall Street expectations.

Rédaction ActuTradingil y a 3 mois
Wall Street hits new all-time highs this Monday
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Wall Street hits new all-time highs this Monday

American stocks are touching new highs at the end of April. US indices continue their upward surge without interruption.

Rédaction ActuTradingil y a 3 mois
Nvidia Crosses $5 Trillion Market Cap
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Nvidia Crosses $5 Trillion Market Cap

The AI chip giant reaches a record valuation after a 4.3% surge during the session. A symbolic milestone that reshapes the global tech hierarchy.

Rédaction ActuTradingil y a 3 mois
Wall Street expects a lower opening with results from Bank of America and Morgan Stanley
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Wall Street expects a lower opening with results from Bank of America and Morgan Stanley

Futures forecast a decline in all three major indices. Bank of America posts higher earnings thanks to volatile markets, while Morgan Stanley unveils its results.

Rédaction ActuTradingil y a 3 mois

Frequently asked questions

What's the current S&P 500 level?+
The S&P 500 trades continuously from 15:30 to 22:00 CET Monday to Friday. In April 2026, the index hovers around 6,400-6,800 points after an ATH at 7,100 points in October 2025. Check our ticker for the exact level.
Can I buy the S&P 500 through a French PEA?+
Not directly (the index is American, not European). But there are PEA-eligible synthetic ETFs replicating the S&P 500 via legal swap: Amundi S&P 500 PEA (PE500). Slightly higher fees (0.15 %/year) largely offset by PEA tax advantage after 5 years.
Is S&P 500 better than CAC 40 long-term?+
Historically yes over 30 years: ~9 %/year for S&P 500 vs ~5 %/year for CAC 40 (dividends reinvested). The gap comes from US tech mega-caps weight (Apple, Microsoft, Nvidia) that drove returns. But no future guarantee — Japan dominated the 80s before 20 years of stagnation.
How much does Nvidia weigh in the S&P 500?+
In April 2026, Nvidia weighs approximately 6-7 % of the S&P 500, just behind Microsoft and Apple (each ~7 %). Its market cap exceeds $3.5T after the AI cycle. This extreme weight creates dependency: a -20 % Nvidia correction mechanically drags the S&P 500 down ~1.5 %.
Why is the Nasdaq more volatile than the S&P 500?+
Two reasons: (1) Nasdaq is concentrated in tech and biotech, high-beta sectors that amplify cycles; (2) Nasdaq includes many non-profitable growth small/mid-caps highly sensitive to rate changes (rising rates = collapsing valuation multiples, see 2022: Nasdaq -33 % vs S&P 500 -19 %).