As short-term traders—whether operating on a scale of minutes or days—we often tend to focus on the S&P 500 because it is the most liquid and widely followed index in the world. Its proxy, the SPY ETF, provides both investors and speculators with an average daily volume of 50 million shares and a massive array of options with diverse strikes and expiration dates.
The S&P 500 futures contract, the E-mini, moves millions of dollars in notional value daily. It is the preferred vehicle for hedge funds and institutions to manage risk through hedging, trading an average of 1.3 million contracts per day.
This is why the S&P 500 is considered "the market" by many. However, the reality is that the index is market-cap weighted. Out of the 500 companies that comprise it, just 8 stocks account for roughly 30% of the index's weight. Since most of these are tech giants, we can argue that rather than representing the entire economy, the S&P 500 is essentially a technology index.
Top Components of the S&P 500
| Company | Ticker | Approx. Weight |
| Microsoft | MSFT | ~7.1% |
| Apple | AAPL | ~6.2% |
| Nvidia | NVDA | ~5.1% |
| Amazon | AMZN | ~3.7% |
| Meta | META | ~2.4% |
| Alphabet | GOOGL/GOOG | ~4.1% (Combined) |
| Berkshire Hathaway | BRK.B | ~1.7% |
| Eli Lilly | LLY | ~1.5% |
When you sum the weights of these top holdings, they exceed 25-30%. This creates a structural divergence: you can have a market where 60% of stocks are declining (poor breadth), yet the index finishes in the green simply because the "Top 8" had a strong session.
Analysis of Market Behavior
Below is a 4-minute chart of the E-mini U25 contract from June 17, 2025. This was a typical sideways market day, indicative of indecision. The price action during the early hours failed to establish a clear trend; it wasn't until approximately 1:00 PM that a downward trend finally took hold.
Now, let’s look at the SPY daily chart for the December 2025 – March 2026 period.
Similar to the intraday behavior mentioned above, the S&P 500 moved sideways for three months. This type of environment is often enough to deplete the capital of even the most active traders. Naturally, being a "tech-heavy" index, the technology sector performed poorly during that same timeframe.
The Opportunity in Sector Rotation
However, there are almost always sectors moving in the right direction. If you identify them early, opportunities abound. Even Utilities managed a monthly rally while the SPY remained stagnant.
This brings us to today’s close and the near-parabolic move we are seeing in the SPY, while other sectors remain flat or nearly unchanged.
Good luck to everyone,
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