Technology
Just 20 Stocks Have Driven S&P 500 Returns So Far in 2023
Just 20 Stocks Have Driven Most of S&P 500 Returns
Just 20 firms—mainly AI-related stocks—are propping up the S&P 500 and driving it into positive territory, signaling growing risk in the market.
The above graphic from Truman Du shows which stocks are making up the vast majority of S&P 500 returns amid AI market euphoria and broader market headwinds.
Big Tech Stock Rally
Tech and AI stocks have soared as ChatGPT became a household name in 2023.
The below table shows data from last month, highlighting that just a small collection of companies drove most of the action on the U.S. benchmark index.
Company Rank | Name | Contribution to S&P 500 Return | Average Weight |
---|---|---|---|
1 | Apple | 1.49% | 6.61% |
2 | Microsoft | 1.15% | 5.72% |
3 | NVIDIA | 1.00% | 1.62% |
4 | Meta | 0.66% | 1.15% |
5 | Amazon | 0.51% | 2.56% |
6 | Tesla | 0.50% | 1.39% |
7 | Alphabet (Class A Shares) | 0.34% | 1.72% |
8 | Alphabet (Class C Shares) | 0.31% | 1.53% |
9 | Salesforce | 0.19% | 0.51% |
10 | Advanced Micro Devices | 0.16% | 0.39% |
11 | General Electric | 0.10% | 0.28% |
12 | Visa | 0.10% | 1.08% |
13 | Broadcom | 0.09% | 0.73% |
14 | Intel | 0.09% | 0.35% |
15 | Walt Disney | 0.08% | 0.55% |
16 | Booking Holdings | 0.07% | 0.28% |
17 | Exxon Mobil | 0.06% | 1.37% |
18 | Netflix | 0.06% | 0.44% |
19 | Oracle | 0.06% | 0.40% |
20 | Adobe | 0.06% | 0.49% |
Top 20 Companies | 7.05% | 29.17% | |
S&P 500* | 7.55% | 100.00% |
*Based on the Vanguard S&P 500 ETF as of April 11, 2023. Source: Vanguard S&P500 ETF, Bloomberg.
Microsoft invested $10 billion into OpenAI, the creators of ChatGPT. It has also integrated generative AI into its search engine Bing. This large language model is designed specifically to make search capabilities faster, generate text, and perform other automations.
Also of interest is NVIDIA, which is the most valuable chipmaker in America. It sells $10,000 chips called A100s that allow machine learning models to run. These models perform multiple tasks simultaneously to develop neural networks and train AI systems, including OpenAI’s ChatGPT. Companies that are developing AI-related services, such as chatbots or image generation, may use up to thousands of these chips.
Despite being the world’s most valuable company and a key driver of returns, Apple is an outlier among tech giants with no major projects announced in AI (so far).
Implications of Market Divergence
The problem with the strong gains seen in a few select AI-related stocks is that it clouds wider stock market performance.
Without the AI-led rally, the S&P 500 would be returning -1.4%. as of May 17, 2023.
4. AI is fueling the stock market
A handful of stocks are spearheading the S&P 500's impressive 9% rally this year.
Here’s the kicker: if you excluded AI stocks, the S&P 500 would be down over 1% (according to Societe Generale). pic.twitter.com/SME1mJVpoW
— Rowan Cheung (@rowancheung) May 22, 2023
This form of steep divergence, known as market breadth, often signals higher risk in the market.
When more companies experience positive returns it is less risky than a small handful seeing the majority of the gains. Today market breadth is very narrow, and these companies make up over 29% of the entire index’s market capitalization.
How long AI-related firms mask the broader performance of the S&P 500 remains to be seen. A growing number of market pressures, from higher interest rates to banking uncertainty could add further challenges.

This article was published as a part of Visual Capitalist's Creator Program, which features data-driven visuals from some of our favorite Creators around the world.
Technology
Ranked: Largest Semiconductor Foundry Companies by Revenue
Most of the 10 largest semiconductor foundries in the world, are headquartered in just three Asian countries, accounting for 90% of the entire industry’s revenue.

Ranked: Largest Semiconductor Foundry Companies by Revenue
They’re in our phones, cars, planes, and even fridges.
Semiconductor chips have become critical for the modern way of life, and the biggest semiconductor foundry companies rake in billions of dollars from widespread demand.
This chart shows the largest semiconductor foundry companies by their percentage of global revenues in Q1 2023, using data sourced from Trendforce.
Semiconductor Foundry Companies by Revenue
At the top of the list and dwarfing every other company by revenue share is TSMC which earned 60% (or nearly $17 billion) of the entire industry’s revenue in Q1 2023.
Founded in 1987, TSMC is a pure-play foundry that has become Taiwan’s largest company and manufactures products for a host of clients including Apple, NVIDIA, and AMD.
Rank | Company | Country | Revenue (Q1 2023, USD) |
---|---|---|---|
1 | TSMC | 🇹🇼 Taiwan | $16,735M |
2 | Samsung | 🇰🇷 South Korea | $3,446M |
3 | GlobalFoundries | 🇺🇸 US | $1,841M |
4 | UMC | 🇹🇼 Taiwan | $1,784M |
5 | SMIC | 🇨🇳 China | $1,462M |
6 | HuaHong Group | 🇨🇳 China | $845M |
7 | Tower Semiconductor | 🇮🇱 Israel | $356M |
8 | PSMC | 🇹🇼 Taiwan | $332M |
9 | VIS | 🇹🇼 Taiwan | $269M |
10 | DB Hitek | 🇰🇷 South Korea | $234M |
Other | $556M | ||
Global Total | $27,860M |
Note: Revenue based on the following conversion rates: USD 1 = WON 1,276; USD 1 = NTD 30.4.
Well behind TSMC in foundry revenues is integrated device manufacturer Samsung, the biggest company in South Korea, which made $3.4 billion (12.4% of the industry’s revenue) from its semiconductor manufacturing business.
GlobalFoundries from the U.S., UMC from Taiwan and SMIC from China round out the top five, with each taking home around 6% of industry’s revenue share in Q1 2023. The former spun out from AMD’s manufacturing arm when the company went fabless in 2009.
Industry concentration is apparent in semiconductors. For example, the top 10 semiconductor foundry companies account for 98% of the entire industry’s revenue. Furthermore, 90% of the market is dominated by companies in just three Asian countries: Taiwan, South Korea, and China.
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