Stock market today: Dow, S&P 500, Nasdaq jump to post weekly gains as Supreme Court strikes down Trump tariffs

2026년 2월 21일 · Unknown · financial · 출처 Yahoo Finance

US stocks rose on Friday after the Supreme Court ruled that President Trump's most sweeping "Liberation Day" tariffs are unlawful, saying he lacked the authority to impose them using emergency powers.

The S&P 500 (^GSPC) rose almost 0.7%, while the Dow Jones Industrial Average (^DJI) gained roughly 0.5%. The tech-heavy Nasdaq Composite (^IXIC) led gains, up nearly 0.9%. All three major averages posted weekly gains.

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Stocks reversed course on the heels of the decision as investors kept an eye out for US-Iran tensions and private credit jitters.

The Supreme Court ruled on Friday morning that Trump overstepped his powers in invoking the International Emergency Economic Powers Act to impose tariffs on several trading partners in April.

In response, President Trump said in a press conference that his administration will be placing a "10% global tariff" to replace the duties struck down by the high court.

Get the latest reaction and fallout to the SCOTUS ruling in our tariff blog here

Wall Street learned earlier Friday that US GDP grew more slowly than expected in the fourth quarter, coming in at 1.4%, far behind forecasts. Meanwhile, the "core" personal expenditures index — Fed rate-setters' preferred gauge of inflation — rose more than expected in December, on a monthly and annual basis.

The watch is on for signs of stress in the private credit sector, after Blue Owl's (OBDC, OWL) halt to withdrawals. Fears are the move is a "canary in the coal mine" financial crisis-style moment amid concerns about the sector's holdings of software stocks threatened by AI.LIVE25 updates

41 mins ago

Ines Ferré

Stocks rise after Trump emergency tariffs struck down by Supreme Court

Stocks rose on Friday after the Supreme Court ruled that President Trump's emergency tariff policy was unlawful.

The S&P 500 (^GSPC) rose almost 0.7% to close out the week with gains. The Dow Jones Industrial Average (^DJI) gained roughly 0.4% while the tech-heavy Nasdaq Composite (^IXIC) jumped nearly 0.9%.

President Trump on Friday afternoon announced a 10% global tariff in response to the levies that the high court struck down earlier that day.

Investors will turn their focus to Nvidia (NVDA) earnings next Wednesday. The chip heavyweight is seen as the bellwether of the AI industry. Today at 8:42 PM UTC

Ines Ferré

Investors turn focus to Nvidia earnings next week

Investors will turn their focus to Nvidia (NVDA) earnings next week. The AI chip heavyweight is seen as the bellwether of the AI industry.

Nvidia shares are up nearly 2% year to date as investors have broadly rotated out of tech into more cyclical and defensive sectors.

The company will report earnings next Wednesday after the market closes. Investors will be paying close attention to CEO Jensen Huang's commentary on data center growth, demand for its Blackwell and Rubin chips, and any discussion of China export controls. Today at 7:24 PM UTC

Ines Ferré

Cybersecurity stocks fall, re-sparking fears of AI disruption

Cybersecurity software stocks fell on Friday after Anthropic announced a new security capability for its Claude AI model, resurfacing concerns of sector-wide disruption.

CrowdStrike (CRWD) dropped 5%, while Zscaler (ZS) also fell about 3%. Meanwhile, Cloudflare (NET) shares decreased 6%.

Anthropic said the new feature, available in a limited research preview, “scans codebases for security vulnerabilities and suggests targeted software patches for human review, allowing teams to find and fix security issues that traditional methods often miss.”

Wall Street has been pushing back against the sell-off, which started in software and expanded into cybersecurity, wealth management, and even logistics in recent weeks. Investors fear AI will impact margins as customers turn to AI solutions and the barrier to entry for startups decreases. Today at 6:47 PM UTC

Trump says he'll impose 10% 'global' tariff, blasts Supreme Court

President Trump said in a press briefing on Friday that his administration will be placing a "10% global tariff ... over and above the normal tariffs already being charged" now that the Supreme Court has struck down his wide-sweeping tariff regime.

In a 6-3 vote on Friday, the Supreme Court ruled that the International Emergency Economic Powers Act (IEEPA) does not give the president the authority to levy tariffs, dealing a blow to the Trump administration's signature economic policy.

The high court's ruling, Trump said at the briefing, was "deeply disappointing."

In those tariffs' place, which the president claimed authority under IEEPA to implement, a global tariff authorized under Section 122 of the Trade Act of 1974 will now be put in place, and the administration will be starting several trade investigations under Section 301.

The White House, Trump said, is ready to replace his tariff regime, struck down by the Supreme Court, with "methods, statutes, practices, and authorities" recognized by the court system and Congress that "are even stronger than IEEPA tariffs."

The alternative measures the administration will now put in place to replace the tariffs will "actually increase" the amount of money coming into the country, based on the court's decision, Trump said at the briefing.

The president also mentioned that "all national security tariffs" under Section 232 and Section 301 "remain fully in place and in full force and effect."

The Supreme Court's ruling on Friday leaves tariffs implemented under Section 232 of the Trade Expansion Act of 1962 — which cite national-security concerns — unchanged, keeping in place a range of import duties on products ranging from copper and semiconductors to automobiles and wood products such as cabinetry.

Section 232 tariffs include 50% levies on imports of semi-finished copper products, 25% levies on certain imported semiconductors —…