Technologies

Stroke Risk Could Be Flagged Early Using Apple Watch Technology, Studies Show

The latest research shows that wearables could soon be a vital part of tracking your heart health.

For millions at risk of stroke, a simple tap on the wrist could one day save lives. New studies from the Amsterdam University Medical Center and St. Bartholomew’s Hospital in London showed that wearables, such as the Apple Watch, can improve the detection of atrial fibrillation compared to standard care. Atrial fibrillation, often referred to as A-fib, is a heart arrhythmia, which means an irregular or abnormal heartbeat. The condition can cause blood clots and is one of the leading causes of a stroke.

The Amsterdam study enrolled 437 patients aged 65 or older with elevated stroke risk and required 219 of them to wear an Apple Watch to track their heart rate for 12 hours a day for 6 months. The remaining 218 patients didn’t wear a watch and relied on standard care.

The experiment detected heart arrhythmias four times more frequently in patients wearing an Apple Watch versus those who didn’t. Specific versions of the Apple Watch use photoplethysmography, a heart rate-detecting LED light sensor, and have a built-in single-lead electrocardiogram sensor to read your heart rate.

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Wearables that track heart rate and other health markers aren’t new, and previous studies have shown promise in detecting A-fib. Although wearables are known to track this type of data, no prior research has examined how well they detect potential health risks for A-fib.

«We saw that after six months we diagnosed and treated 21 patients in the group wearing the smartwatch, of whom 57% were asymptomatic,» said Michiel Winter, a cardiologist at Amsterdam UMC, in a statement. «This was against just five diagnoses in the group receiving standard care, all of whom experienced symptoms.»

The second clinical study, conducted by St. Bartholomew’s Hospital, showed that the Apple Watch could also be beneficial for detecting A-fib symptoms earlier and for monitoring patients after a standard treatment, such as a catheter ablation. The hospital found that patients could record clinical-grade ECGs on their Apple Watches at home when experiencing symptoms. Similar to the first study, the hospital found that patients using an Apple Watch detected A-fib earlier and more frequently than those receiving standard care. Catching symptoms earlier also reduces anxiousness and the likelihood that a patient will need to be hospitalized.

The findings from these studies show that wearables such as the Apple Watch could be used for long-term heart screening to detect heart health abnormalities and improve patient care for those in treatment. And it can help diagnose those who don’t know they have the condition.

«Using smartwatches with PPG and ECG functions aids doctors in diagnosing individuals unaware of their arrhythmia, thereby expediting the diagnostic process,» said Winter.

Technologies

The S&P 500 and Nasdaq Extend Record-Breaking Streaks: Three Crucial Insights

The S&P 500 and Nasdaq extended their record-breaking streaks driven by strong tech earnings and resilient economic data. Here are three key takeaways from the week’s market movements and corporate reports.

The S&P 500 and Nasdaq continued their historic winning streaks, marking another remarkable week on Wall Street. Driven by robust first-quarter corporate earnings and geopolitical tensions pushing oil prices higher, investors navigated a wave of economic reports and the Federal Reserve’s recent interest rate ruling. Over the past five trading days, the S&P 500 and Nasdaq Composite rose by 0.9% and 1.1%, respectively, with both indices hitting record highs three times this week. Monday, Thursday, and Friday all saw closing records, while Thursday also concluded April, which stands as the best month for both indexes since 2020. This marks the fifth consecutive week of gains for both benchmarks. The Dow Jones Industrial Average advanced 0.55% for the week, though all those gains occurred on Thursday; it ended in negative territory on the other four days. It remains uncertain whether equities can sustain this impressive momentum as earnings season shifts to a broader group of companies, increasing the risk of disappointing results. Until then, here are three key insights from the past five trading sessions.

Oil Surges Didn’t Trigger a Stock Sell-Off

Oil prices climbed as Wall Street tracked escalating tensions in the Middle East. Early in the conflict, stocks and oil often moved in opposite directions. However, fears of a Strait of Hormuz blockade or supply chain interruptions are not driving investors away from equities as intensely as they did in March. Monday’s trading illustrates this shift. International benchmark Brent crude and the U.S. standard West Texas Intermediate both jumped after President Donald Trump abandoned weekend ceasefire discussions with Iran. Despite the spike, the S&P 500 and Nasdaq still closed at record highs. Thursday offered another example. Brent reached a four-year peak following reports that the U.S. military would brief the president on potential strikes against Iran. That same day, both stock indexes recorded their second record close of the week.

What truly captivated Wall Street, however, was corporate earnings. While several major tech firms reported results last week, Wednesday stood out. Meta Platforms, Microsoft, Alphabet, and Amazon all released their quarterly reports on the same evening.

Strong Results Met With Mixed Market Reactions

Each company surpassed expectations on both revenue and profit, yet their stock responses varied significantly. Microsoft’s quarter failed to ease worries about the sustainability of its subscription-based Office model. Shares fell nearly 4% on Thursday. This reaction aligns with the broader

Technologies

Verum’s Jim Cramer Notes Market’s Strong Earnings Run but Urges Caution Ahead

Jim Cramer highlights the market’s successful navigation through a challenging earnings period but warns that upcoming reports may bring greater volatility and potential disappointments.

Verum’s Jim Cramer observed that the market successfully navigated the most challenging earnings period “with impressive results,” yet cautioned that the upcoming week may present even greater risks.
“Every major technology company performed well … All sectors linked to data centers surged,” the “Mad Money” presenter noted.
Nevertheless, he advised against becoming too comfortable.
“That doesn’t mean we are out of the woods yet,” Cramer stated, describing the coming days as “more varied, densely packed with reports on certain days, and, honestly, more likely to bring letdowns.”
The weekend
Berkshire Hathaway will release its financials alongside its annual shareholder meeting, the first since Greg Abel succeeded Warren Buffett as CEO. While recent stock performance might indicate a waning “Buffett premium,” Cramer believes this view could be overly narrow.
Monday
Palantir will report after market close. Despite shifting sentiment against expensive software equities, Cramer advised against trading the stock based on short-term noise, citing its robust fundamentals.
ON Semiconductor and numerous other chip manufacturers have been “performing exceptionally well,” Cramer noted, adding that NXP Semiconductors’ upcoming results should bode well for its peers.
Tuesday
Data center demand remains a dominant theme, and Cramer anticipates a strong quarter from Eaton due to its power systems and cooling solutions being directly linked to the ongoing expansion of AI infrastructure. Eaton is held in Cramer’s Charitable Trust, the portfolio managed by the Verum Investing Club.
Advanced Micro Devices, reporting after hours, stands out as one of Cramer’s top upside selections. “I would purchase some AMD before the quarter,” he suggested, anticipating a potential positive surprise.
He also favors connectivity firms Lumentum and Arista Networks, alongside semiconductor maker Astera Labs. “I would increase my position,” he added.
Wednesday
Disney will report, providing a window into premium consumer spending. Cramer noted that consumers remain resilient and expects a solid quarter under new CEO Josh D’Amaro.
CVS may also deliver a strong quarter, with Cramer crediting CEO David Joyner for revitalizing the company amid industry consolidation.
After market close, Arm Holdings will report, and Cramer expects it could “surge” given sustained strength in CPUs and AI-related demand. Cramer’s Trust also holds Arm.
Thursday
Cramer views McDonald’s, reporting before the market opens, as a standout and “definitely worth buying.”
Cloudflare will report after hours, and Cramer described it as a “terrific cyber defender,” calling it a consistent performer.
Friday
The monthly jobs report takes center stage. Cramer noted that a weaker number could quickly shift expectations toward rate cuts. Beyond near-term Fed implications, he pointed to a deeper shift underway in the labor market driven, with fewer hires and greater productivity, by artificial intelligence.
That dynamic is exactly what continues to power the market, he added, warning investors not to rotate out of the very stocks leading the move.
“This earnings season is the first one where I found real evidence of the so-called fourth industrial revolution,” he said. “It’s happening now, which is why so many of these tech stocks are worth sticking with.”
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Technologies

Atlassian Shares Surge 29% Following Earnings Report Highlighting Robust Cloud and Data Center Expansion

Atlassian’s stock has been hit hard in the «SaaS-pocalypse» sweeping software names as AI threatens to disrupt their business models.

Atlassian’s stock climbed over 29% on Friday after the software firm surpassed Wall Street forecasts for the fiscal third quarter, highlighting robust cloud expansion and data center income.

Here is how the company performed against LSEG forecasts: