Among companies with a capitalization of at least $10 billion, the largest increase last week was recorded by the American company IonQ, a provider of quantum computing services, whose shares increased by 30.58% over the past business week. The price of one share reached $45.69. Next is United States Steel Corporation. The shares of this American company engaged in the production of steel building materials increased by 28.90% over the past business week, reaching $52.01. And this top three is completed by CoreWeave, a provider of cloud computing services, with a growth of 27.95%. The price of one share of this company is $102.74.

The top three of largest-cap companies with the biggest losses last week starts off with Fair Isaac Corporation. The share price for this analytics software services provider fell 23.05% in a week and is now at $1,694.36. Next is Deckers Outdoor Corporation. The share price of this parent company of a number of global clothing and footwear brands fell 21% to $101.05. And this top three is completed by Booz Allen Hamilton Holding. This management and technology consulting company's share price fell 16.32% to $107.79.

US stock markets fell sharply last week, with the S&P 500, Dow Jones, and Nasdaq all posting their worst weekly losses since March. The Dow fell 2.47% for the week, the S&P 500 fell 2.61%, and the Nasdaq fell 2.48%. The decline was driven by US President Donald Trump's proposal to impose a 50% tariff on imports from Europe and a 25% tariff on iPhones not made in the US, which led to renewed trade tensions. Apple shares fell 3% after the announcement.

European stock markets closed last week lower after Trump's aforesaid announcement. The STOXX 600 index, which tracks European stocks, suffered its biggest one-day drop in a month on Friday, down 0.9%. Automakers were the worst hit, down 3.1%, followed by luxury brands and banks. The German stock market fell 1.5%, while other major markets in France, Spain, and Italy also lost more than 1%.

In the week ending May 21, US stock funds recorded a net outflow of $11 billion, compared with an inflow of $13.6 billion the previous week. This selling en masse was driven by concerns about the potential impact of rising US national debt.

The yield on the 30-year US Treasury bonds hit a 19-month high last week. Despite this, the US dollar weakened, falling 1.8% against the other major national currencies for the week. This unusual divergence between rising bond yields and a weakening dollar has raised concerns among investors.

Nuclear energy stocks rose sharply amid news that President Trump is planning to reinvigorate the nuclear energy industry. In particular, Trump is reportedly planning to ease the licensing process for new nuclear reactors and strengthen nuclear fuel supply chains. Uranium mining and nuclear energy companies’ stocks were among the biggest gains, with Uranium Energy up 11.8%, Energy Fuels up 13.2%, and Centrus Energy up 19.6%.

Alphabet shares hit a nearly three-month high due to new artificial intelligence (AI) updates. The company's focus on AI innovation has bolstered investor confidence, leading to increased demand for the stocks.

On Monday, 3 billion drams of government bonds were placed on Armenia’s stock market, and they will be redeemed on September 1. The respective public auction had four participants, and the amount of bids submitted by them totaled 8.149 billion drams. The weighted average price of the placed government bonds amounted to 97.9539 drams, and the yield was 7.7524 percent.

Business activity in the US increased in May, which is due to a temporary ceasefire in the US tariff "war" with China. The PMI index for industry and services rose to 52.1 after 50.6 in the previous month. However, the report notes that the inflation rate is likely to increase in the near future, which raises concerns for the US Federal Reserve.

Eurozone business activity unexpectedly fell in May. The PMI index fell to 49.5, falling below the 50 mark that already signals contraction. This fall was largely driven by a surprise drop in the services sector, which has been a major driver of growth in recent years. Economists say the ongoing US-EU trade war is creating uncertainty and making businesses more cautious.

The European Commission has reduced its forecast for economic growth in the eurozone due to the ongoing trade war with the US and uncertainty about its course. The eurozone economy is now forecast to grow by just 0.9% in 2025, down from the previously forecast 1.3%. Growth in 2026 has also been revised to 1.4%, down from the previous 1.6%. The EU said this slowdown was mainly due to a slowdown in global trade.

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