7/23 US stock market - Tesla·Alphabet shock shakes the market…Defensive healthcare and defense stocks surge

July 23, 2026 Market Analysis

## 1. What happened today?

Today (Thursday, July 23rd), the US stock market recorded its largest single-day decline in a month as "big tech disappointment + commodity and interest rate burden" converged simultaneously. (apnews.com)

- Overall market sentiment was negative.

- 3 out of 11 sectors closed higher (healthcare, industrial goods, utilities).

- Communication services (-3.05%) and Tesla (-10.53%) led the decline.

- Healthcare (+1.01%) and defense-focused industrial goods performed well due to strong earnings.

Key takeaway:

> "Expectations for AI and electric vehicle leaders were too high, and when their performance failed to meet those expectations, money flowed into more defensive healthcare and defense stocks."

## 2. Three axes that shook the market

### 2-1. Tesla·Alphabet: 'AI investment' backfired today

The biggest issue in the market today was Tesla (TSLA) and Alphabet (Google parent company).

- Tesla reported weaker-than-expected earnings and announced an aggressive capital expenditure plan (especially for autonomous driving and AI infrastructure), leading to a plunge of over 10% during trading today. Hundreds of billions of dollars in market capitalization evaporated. According to several reports, Tesla's stock price has fallen more than 20% month-to-date due to earnings disappointment and uncertainty surrounding AI and robotaxis, reaching its lowest level in the past year. (apnews.com)

- Alphabet (Alphabet) also recorded a 7~8% decline due to concerns about margin pressure from increased AI investment, significantly contributing to the S&P 500's decline. (apnews.com)

Both stocks are major "index leaders" with significant weight in the S&P 500 and Nasdaq. When they both falter, the entire index tends to follow suit.

> Why is this important?

> The market has been pricing in high expectations for AI and electric vehicles. Today's events served as a reminder that "earnings and cash flow ultimately matter."

### 2-2. Crude oil price breaks $100 per barrel again: Inflation concerns resurface

International oil prices (Brent crude) surged past $100 per barrel, raising inflation concerns across the market. (apnews.com)

- Rising oil prices lead to increased costs for gasoline, logistics, and raw materials, squeezing corporate profits and household real income.

- It also puts upward pressure on bond yields (interest rates), creating headwinds for growth stocks and big tech valuations.

The weakness in the technology sector (-0.86%) today reflects not only the Tesla·Alphabet issues but also the combined impact of these interest rate and inflation concerns.

### 2-3. Defense and diagnostics/equipment stocks: "Earnings speak louder" - Healthcare and industrial goods surge

Conversely, money flowed into stocks with strong earnings.

- Lockheed Martin (LMT):

  - Q2 revenue increased 11% from $18.2 billion in 2025 to $20.1 billion in 2026.

  - Achieved a record backlog of approximately $230 billion due to increased demand for missiles, air defense systems, and precision-guided munitions. (investors.lockheedmartin.com)

  - The stock price surged by about 10% today, driving the industrial goods sector's return of +0.78%.

- Allegion(ALLE):

  - Q2 revenue $1.15 billion, net income $185 million ($2.15 per share), exceeding market expectations.

  - As a company providing building access and security solutions, it is considered a beneficiary of increased commercial and residential construction and infrastructure investment and surged over +10%.

- Quest Diagnostics(DGX):

  - Announced Q2 results along with upward revision of annual revenue and EPS guidance. Strong diagnostic demand and expanded partnerships with hospitals and healthcare providers were positively evaluated.

  - Led the overall sector rise with an +8% surge today in the healthcare sector.

Thus, money flowed into defensive/less cyclical sectors backed by solid performance. Today's rise in healthcare (+1.01%), industrials (+0.78%), and utilities (+0.49%) well explains this.

## 3. Sector Overview: Where Money Flows In and Out?

### 3-1. Healthcare: 'Quiet Strength' Driven by Performance

- Today's performance: +1.01% (1st among 11 sectors)

- Leading stocks: Quest Diagnostics(+8.61%), Thermo Fisher(+7.88%), Danaher(+7.46%)

Looking at the past 7 trading days, healthcare experienced slight declines around -1% on July 17th and 20th, and also a -1.22% drop on July 22nd. However, today's strong rebound suggests a short-term adjustment followed by recovery.

Over the past 60 trading days, the healthcare portfolio has risen +9.58% since late April. However, it experienced a slight adjustment of -2.78% from July 2nd onwards. Today's performance-driven rebound could be the first test to see if this adjustment will settle into a gentle correction or deepen further.

> Investor Perspective:

> - Healthcare is a sector with a high proportion of essential services that are less affected by economic conditions, and structural demand is supported by aging population and chronic disease prevalence.

> - It is often mentioned as a target for fractional buying during market volatility. However, considering it already experienced a rally in early July followed by an adjustment phase, further upside potential versus valuation needs to be assessed on a per-stock basis.

### 3-2. Industrials: 'Stable Growth' Story Driven by Defense and Infrastructure

- Today's performance: +0.78%

- Leading stocks: Allegion(+10.45%), Lockheed Martin(+9.97%), RTX(+7.26%)

Looking at the past 7 days, industrials experienced slight declines around -1% on July 17th and 20th, but are gradually turning around with +0.63% on July 22nd and +0.78% today.

Over the past 60 trading days, the industrials portfolio has risen +5.38% since late April, and shows a gentle upward trend of +1.26% since July 8th.

Defense (LMT, RTX) and security/infrastructure companies are demonstrating cash generation capabilities and order backlog through their performance, playing a defensive role in the uncertain economic environment by highlighting the continuity of public/defense spending and infrastructure investment.

> Investor Perspective:

> - Industrials are generally considered a cyclical sector, but defense, infrastructure, and energy infrastructure companies have relatively low volatility due to government contracts and long-term agreements.

> - In today's market environment, these defense/infrastructure subsectors played a role in reducing portfolio volatility.

### 3-3. Utilities: 'Dividend Shield' Amid Interest Rate and Inflation Concerns

- Today's performance: +0.49%

- Leading stocks: NRG(+2.15%), Southern Company(+2.12%), Sempra(+1.55%)

Looking at the past 7 days, utilities experienced consecutive declines (-0.78%, -0.56%, -0.13%) from July 17th to 21st, but rebounded sharply with +2.15% on July 22nd and continued its upward trend today.

Over the past 60 trading days, it has risen only +1.95% since late April, and shows a slight adjustment of -0.63% since June 26th. This reflects the typical characteristics of a defensive sector where money flows in for dividends and stability rather than significant directional movement.

> Investor Perspective:

> - Utilities are generally considered "bond-like stocks" and are strong in high dividends and stable cash flow.

> - However, their attractiveness may decline relatively during interest rate hikes. Therefore, it is necessary to check whether they are too expensive to buy, especially in today's market where interest rate uncertainty is rising again.

### 3-4. Tech Stocks: 'Cold Water' on Overheating Expectations... Tesla Plunge as a Symbolic Signal

- Today's Performance: -0.86%

- Leading Stocks (Rise): Intel(+6.10%), Roper(+5.69%), Applied Materials(+3.26%)

- Decline Representatives: ServiceNow(-8.95%), and Tesla(-10.53%), which is outside the sector but has a large impact on the index.

Over the past 7 days, tech stocks have fallen -0.60% on July 17th, followed by two consecutive small gains on July 20th and 21st, then -0.74% on July 22nd, and -0.86% today, showing signs of fatigue again.

Looking at the 60-day moving average, the tech sector portfolio is +11.85%, ranking among the top performers in all sectors. However, since June 12th, the trend has been a -4.28% decline.

> Investor Perspective:

> - Today's cases of Tesla and Alphabet show that stocks where AI and electric vehicle expectations are already largely reflected in the price can be significantly shaken if they "fall even slightly short of expectations" when earnings are announced.

> - There is no need to abandon tech stocks entirely, but it is important to clearly distinguish between companies with high cash flow and earnings visibility versus story-driven hyper-valued stocks.

### 3-5. Communication Services: T-Mobile and Big Tech Shock

- Today's Performance: -3.05% (Lowest among 11 sectors)

- Representative Declining Stocks: T-Mobile(-10.94%), some mega-cap internet and platform companies

T-Mobile recorded a 5~10% drop today as its Q2 earnings report showed revenue slightly below consensus and a slowdown in postpaid subscriber growth. (au.investing.com)

The communication services sector has shown a consistent weak trend throughout this week, with -1.49% on July 17th, -0.25% on July 20th, -0.81% on July 21st, -0.52% on July 22nd, and -3.05% today.

Over the past 60 days, the sector portfolio is also at -7.95%, the lowest among the 11 sectors, and has recorded an additional decline of -4.33% since July 20th.

> Investor Perspective:

> - This sector, which includes telecommunications, media and internet platforms, has a lot of structural risks such as regulations, competition and content costs, leading to high volatility.

> - In particular, when subscriber growth slows down or advertising demand weakens as seen today, the market tends to quickly readjust valuations.

### 3-6. Consumer-Related Sectors (Cyclical and Defensive): Domino Effect Weakness from Tesla Shock

- Consumer Cyclical: -1.40%

  - Representative Declining Stocks: Tesla(-10.53%), some weakness in durables and retail stocks

- Consumer Defensive: -1.76%

  - Large defensive stocks (Costco, Hershey) were relatively resilient, but the overall sector declined.

Over the past 7 days, consumer cyclical has been under typical downward pressure with -1.48% on July 17th, -0.76% on July 20th, +0.07% on July 21st, -0.68% on July 22nd, and -1.40% today. Consumer defensive has also been in a weak range with declines and small rebounds.

Looking at the 60-day moving average, consumer cyclical is at -2.00% and consumer defensive is at +3.66%. Today confirmed that "if large Tesla, auto and retail stocks don't hold up, the entire sector tends to be dragged down."

> Investor Perspective:

> - Consumer sectors are sensitive to wages, employment and inflation. The price of oil exceeding $100 per barrel could be a pressure factor on consumer spending in the long term.

> - However, consumer defensive has strong defense capabilities in the long run, so many investors consider splitting purchases into high-dividend stocks during adjustments.

### 3-7. Energy and Commodities: Mixed Performance Despite Oil Rally

- Energy: -0.10%

- Oil prices rose, but profit-taking in some stocks and short-term overheating led to a slight drop in the sector index.

- However, some large-cap stocks such as ONEOK(+1.61%), Williams(+1.46%), and Exxon(+1.28%) closed higher.

- Basic Materials: -1.29%

- Major stocks such as Nucor and Corteva also saw only slight increases, failing to prevent the overall decline of the sector.

Based on 60 trading days, the energy portfolio was +2.91%, and since July 1st, it has shown a strong rebound trend of +10.99%. In other words, it appears that the market is taking a breather after a rapid rise earlier this month.

> Investor Perspective:

> - Oil prices are highly volatile in the short term, but energy infrastructure and dividend-focused stocks have relatively defensive characteristics.

> - However, the energy sector is very sensitive to policy and geopolitical risks. Therefore, instead of going all-in on the entire sector, it is necessary to consider dividends, financial structure, and policy risks together.

## 4. Today's Movement in the Context of Recent 1 Week and 2 Months

### 4-1. Weekly Flow: "This week was generally a risk-off (risk aversion)" week

Combining the daily performance for the past seven days:

- Sectors that continued to weaken throughout the week:

- Communication services, financials, and consumer-related sectors (economy and essentials)

- Rebound pattern after decline:

- Healthcare, industrials, utilities, energy

Today's decline is more like the "climax" of the risk aversion trend that has continued throughout this week rather than a sudden drop. In particular, today was the day when the sharp decline of symbolic stocks such as Tesla and Alphabet imprinted this trend on the entire market.

### 4-2. 60 Trading Day (Approximately 3 Month) Perspective: "Tech and Healthcare Remain Strong, but Adjusting Speed"

- Technology: Total return +11.85%, but -4.28% decline since mid-June.

- Healthcare: +9.58% which is good, but a -2.78% adjustment period since early July.

- Energy: Only +2.91% overall, but a sharp rebound of +10.99% since July 1st.

- Communication Services: -7.95%, showing structural weakness, particularly a -4.33% plunge since July 20th.

In summary, while tech and healthcare have remained "winners" in the past few months, they are currently in a phase of speed adjustment and valuation readjustment. On the other hand, industrials, utilities, and energy, which focus on defense, infrastructure, and high dividends, have begun to play a relatively more important role in portfolios in the second half of the year.

## 5. What Does This Mean for My Portfolio?

### 5-1. If Big Tech and Tesla Already Have a Large Weighting

- Today is a day that can be psychologically shaken.

- However, it's a good opportunity to distinguish between superior tech with solid performance and cash flow backing, and stocks whose valuation has become excessive and reliant solely on "stories".

- Rather than concluding that the trend has completely reversed,

- Performance and guidance,

- The speed of realization for growth stories such as AI and cloud,

- Interest rate and inflation environment

Consider these factors together and think about partial rebalancing.

### 5-2. If Defensive and Dividend Stocks Have a Low Weighting

- Today's movement of healthcare, defense, and utilities is a typical example of how the value of defensive sectors increases when the market becomes uncertain.

- If you are thinking about "long-term investment",

- Healthcare (diagnosis, equipment, essential treatment),

- Defense and infrastructure,

- High-dividend utilities and energy infrastructure

Including these in your portfolio can act as a buffer during periods of volatility.

### 5-3. From a Short-Term Trading Perspective

- The communication services, consumer, and financial sectors, which have been weak throughout this week, may also see a chance for a short-term technical rebound.

- However, considering that today's adjustment is not simply a technical correction but a reevaluation of performance and valuation, it seems safer to adopt a selective approach after earnings announcements rather than rushing into rebound purchases.

## 6. Conclusion: One-Line Summary of Today's Message

> "AI and electric vehicle stories ultimately need to be proven by numbers (performance). In the meantime, healthcare, defense, and infrastructure, which generate cash flow well, are becoming havens for investors."

Today's adjustment is less of a signal to give up on all risk assets and more of a message to check:

- Where expectations are excessively concentrated,

- And where actual cash is being generated.

Given that volatility may increase in the near future due to earnings season and oil and interest rate trends,

sector and stock diversification, as well as defensive sector weight management, are more important than ever.

This content is for informational purposes only and does not constitute investment advice for any specific security or asset.

Source: https://nextinvest.org/ko

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