The Top 25 Stocks in the S&P 500

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As of May 14, 2026, the 25 largest positions in the S&P 500 begin with Nvidia, Apple, Microsoft, Amazon and Alphabet, followed by Broadcom, Meta Platforms, Tesla, Micron Technology and Berkshire Hathaway. Together those 25 lines made up about 52.8% of the index’s weight, based on the holdings of the SPDR S&P 500 ETF Trust (SPY). That means roughly half of the money in an S&P 500 fund sits in fewer than 5% of its stocks. The ranking follows free-float market capitalization, so it changes whenever share prices move.

Top 25 S&P 500 stocks by weight

These figures are SPY portfolio weights as of May 14, 2026. They are a snapshot and will differ on any later date.

Technology and chip companies dominate the top of the list. Six of the top 10 lines are hardware, semiconductor or software businesses, and Amazon, Alphabet, Meta and Tesla are large technology-driven companies classified in other sectors. Beyond rank 10 the list widens to banking (JPMorgan), pharmaceuticals (Eli Lilly, Johnson & Johnson), energy (Exxon Mobil), retail (Walmart, Costco), payments (Visa, Mastercard) and industrial machinery (Caterpillar).

Why these companies rank highest

The S&P 500 is a free-float market capitalization-weighted index. Market capitalization is the total value of a company’s outstanding shares:

Market cap = shares outstanding × share price

A company with 20 million shares trading at $100 has a market cap of $2 billion. “Free float” narrows this to shares that are actually available to public investors, leaving out stakes held by insiders, governments or other strategic holders. A company’s index weight is its float-adjusted market cap divided by the combined float-adjusted market cap of all constituents.

Two things follow from this design. First, rank is a measure of size, not of quality, growth or valuation. A stock moves up the list because its market value rose relative to the rest of the index, and it can slide down just as quickly after a sell-off. Second, the index rebalances itself as prices move: no trading is needed for a rising stock to gain weight.

Example

Take a simplified, hypothetical index of three stocks:

• Company A: float-adjusted market cap of $600 billion
• Company B: $300 billion
• Company C: $100 billion

The total is $1 trillion, so A carries 60%, B 30% and C 10%. If A gains 10% and the others are flat, the index rises 6% (60% × 10%). If C gains 10% instead, the index rises only 1%. The same percentage move in a large stock has six times the effect of that move in the small one.

Applied to the real list, a 10% move in Nvidia at its May 2026 weight of 8.59% would shift the index by about 0.86 percentage points by itself, holding everything else constant. A 10% move in Lam Research at 0.58% would shift it by about 0.06 points.

What concentration means for an index investor

Because the largest stocks carry so much weight, a large share of the index’s return can come from a relatively small group of names. It is not unusual for roughly three-quarters of the index’s return to trace back to 50 to 75 stocks. Adding or removing a small constituent barely registers in the index’s performance, while a change in one of the largest companies can move it noticeably.

The same logic applies to sectors. As of May 14, 2026, S&P’s sector breakdown looked like this:

If oil prices rise and energy companies post stronger profits, that sector still represents only 3.5% of the index. A rally in energy stocks can be overwhelmed by weakness in information technology, which is ten times larger. An investor buying an S&P 500 fund for broad exposure to the U.S. economy is, in practice, taking a significant position in a handful of technology-related companies.

Exceptions that change the answer

SPY weights are a proxy, not the official index. S&P Dow Jones Indices publishes its top 10 holdings for free, but the full list with weights is available only through its paid Capital IQ service. SPY held about $772.3 billion in assets as of May 14, 2026, and tracks the index closely, so its holdings are a practical stand-in. Cash, fees and timing can make its weights differ slightly from the index’s.

Some companies count more than once. The index has 500 companies but 503 stocks, because a few companies have more than one share class in it. Alphabet is the prominent case: Class A (GOOGL, with voting rights) and Class C (GOOG, without voting rights) are listed separately, so the top 25 lines cover 24 companies. Combined, the two classes weighed 6.59% as of May 14, 2026. Counted as one company, Alphabet would rank third, ahead of Microsoft.

The order is not fixed. Ranks near the top can swap within weeks when large companies report earnings or when market sentiment shifts between growth and defensive sectors. Lower on the list, positions separated by a few hundredths of a percentage point, such as Netflix and Lam Research, can trade places in a single session.

How a company gets into the S&P 500

The S&P 500 was created in 1957 and covers the large-cap segment of the U.S. stock market. A committee at S&P Dow Jones Indices selects members, and a company must meet a set of criteria to be added:

• A total market capitalization of at least $22.7 billion
• U.S. domicile
• A float-adjusted liquidity ratio (FALR) of at least 0.75
• A positive sum of earnings over the most recent four consecutive quarters
• Positive earnings in the most recent quarter
• Adequate trading liquidity

The market cap threshold is revised periodically as the market grows. A company that later falls substantially short of the standards can be removed, though the committee does not drop a constituent automatically the moment it dips below a threshold. The combined market cap of all constituents stood at about $64.5 trillion as of May 13, 2026.

How to invest in these stocks

The S&P 500 is an index, so it cannot be bought directly. Investors get exposure through index funds and ETFs that track it, such as SPY. Buying one of these funds means owning all the constituents at roughly their index weights, including the concentration in the top 25.

The alternative is buying the individual stocks. That allows an investor to choose which of the largest companies to own and in what proportion, but it also gives up the diversification of the remaining several hundred names. Anyone going that route should evaluate each company on its own merits; a guide to stock analysis methods covers both fundamental and technical approaches.

FAQs

The Bottom Line

S&P 500 fund investors own a portfolio where about half the money sits in 25 lines dominated by technology and chip companies. Because weights follow free-float market cap, the ranking reflects size rather than quality and shifts as prices move. Investors who want broad U.S. exposure should recognize that a handful of large companies drive much of the return, while buying individual stocks gives up the diversification of the remaining names.