What are today's top business/market headlines?

Here's a roundup of today's top business and market headlines (Monday, September 28, 2026):

Middle East Tensions Roil Markets
Oil advanced and US equity-index futures slipped after President Trump rejected Iran's latest proposal to reopen the Strait of Hormuz, reigniting Middle East tensions that have roiled bond markets. Brent crude climbed 1.9% to about $106.30 a barrel as Iran stuck to a seven-day proposal for reopening the Strait of Hormuz. Futures for the S&P 500 and Nasdaq 100 fell 0.3% in early Asian trading, while the dollar edged higher against most major currencies and the yen weakened.

Bond Market Volatility
The bond market is having a wild month, with yields around the globe spiking to their highest levels in decades, and bond market volatility increased at its fastest pace in months. CNBC also notes the 10-year Treasury yield is at its highest in nearly two decades.

AI/Tech Sector Developments

•Meta and Microsoft led tech stocks higher last week despite soaring bond yields.

•Apple was hit with a $5.7 billion Taction patent verdict.

•OpenAI is carrying out an "extensive" model behavior review amid more rogue incidents.

•Debt-hungry AI companies face increased risk as bond yields spike.

•Apple (AAPL) stock hit a record high on Tuesday, driven by the latest fanfare over its foldable iPhone Duo.

Copper and Housing
The AI boom and tariff uncertainty are pushing copper prices to record highs, with tightening global supply and robust AI-driven demand sending prices soaring to their highest levels ever. Meanwhile, fueled by the artificial intelligence boom, San Francisco and its suburbs are quickly becoming the hottest housing market in the country.

Corporate Moves

•Paramount made promises to Hollywood to land Warner Bros. Discovery.

•Coca-Cola hired Rob Gehring from Monster Energy to run its North American operations.

•MGM Resorts shares sank after Barry Diller's People Inc. rescinded its takeover offer.

•Hyundai is set to outsell Ford in Q3 as Detroit automakers lack hybrids.

•Berkshire Hathaway added to its nearly doubled stake in a slumping homebuilder.

Japan's Financial Markets
From surging bond yields to US intervention to support the yen, Japan's financial markets are undergoing major shifts that have consequences for investors and borrowing costs around the globe.

Winter Energy Costs
Consumers should get ready for a 30% jump in heating oil costs this winter as the Iran war drives up prices.

Markets remain on edge this week amid the Middle East conflict, soaring bond yields, and continued AI-sector volatility — with Micron earnings and the September jobs report set to lead market headlines this week.

Citations (12)

1bloomberg.comNews and mediaquality 0.84
Stock Market Today: Dow, S&P Live Updates for September 28 - Bloomberg
Source excerpt: “Oil advanced and US equity-index futures slipped after President Donald Trump rejected Iran’s latest proposal to reopen the Strait of Hormuz, reigniti...”
2bloomberg.comNews and mediaquality 0.84
Stock Market Today: Dow, S&P Live Updates for September 28 - Bloomberg
Source excerpt: “Brent crude climbed 1.9% to about $106.30 a barrel as Iran stuck to a seven-day proposal for reopening the Strait of Hormuz. ”
3bloomberg.comNews and mediaquality 0.84
Stock Market Today: Dow, S&P Live Updates for September 28 - Bloomberg
Source excerpt: “Futures for the S&P 500 Index and the Nasdaq 100 Index fell 0.3% in early Asian trading, while the dollar edged higher against most major currencies a...”
4cnn.comNews and mediaquality 0.66
Business News - Latest Headlines on CNN Business | CNN Business
Source excerpt: “The bond market is having a wild month. Oil is making things even worse · Bonds had a wild week, with yields around the globe spiking to their highest...”
5cnbc.comNews and mediaquality 0.85
Stock Markets, Business News, Financials, Earnings - CNBC
Source excerpt: “September 26, 2026OpenAI carrying ... and an ETF tracking the AI power ecosystem · September 26, 2026Apple hit with $5.7 billion Taction patent verdic...”
6yahoo.comNews and mediaquality 0.69
Yahoo Finance - Stock Market Live, Quotes, Business & Finance News
Source excerpt: “... Apple (AAPL) stock hit a record high on Tuesday, driven by the latest fanfare over its foldable iPhone Duo. ”
7cnn.comNews and mediaquality 0.66
Business News - Latest Headlines on CNN Business | CNN Business
Source excerpt: “Joe Raedle/Getty Images · The AI boom and tariff uncertainty are pushing copper prices to record highs · Sep 10, 2026 · Tightening global copper suppl...”
8cnn.comNews and mediaquality 0.66
Business News - Latest Headlines on CNN Business | CNN Business
Source excerpt: “Fueled by the artificial intelligence boom, San Francisco and its suburbs are quickly becoming the hottest housing market in the country. ”
9cnbc.comNews and mediaquality 0.85
Business News
Source excerpt: “Markets · Business · Investing · Tech · Politics & Policy · Video · Watchlist · Investing Club · PRO · Livestream · Menu · Here's exactly what Paramou...”
10cnn.comNews and mediaquality 0.66
Business News - Latest Headlines on CNN Business | CNN Business
Source excerpt: “From surging bond yields to US intervention to support the yen, Japan’s financial markets are undergoing major shifts that have consequences for inves...”
11cnn.comNews and mediaquality 0.66
Business News - Latest Headlines on CNN Business | CNN Business
Source excerpt: “Here’s what it means for borrowers and savers ... Robert F. Bukaty/AP · Get ready for a 30% jump in heating oil costs this winter as Iran war drives u...”
12yahoo.comNews and mediaquality 0.69
Yahoo Finance - Stock Market Live, Quotes, Business & Finance News
Source excerpt: “Micron earnings and the September jobs report are set to lead market headlines this week. ”