The Nuremberg native brings over three decades of capital markets experience, backed by a career shaped by deep market insight and a genuine passion for investing. His journey began in 1994 through an investment club among colleagues – a formative experience that sparked a lifelong dedication to identifying compelling investment opportunities.
Following senior editorial roles at Nürnberger Nachrichten, €uro am Sonntag, and €uro, he went on to serve as Editor-in-Chief of the renowned investor magazine Börse Online from 2014, where he played a key role in shaping high-quality financial journalism for a broad investor audience.
Since April 2026, he has been operating independently, fully focused on his core strength: uncovering mispriced equities with significant upside potential – particularly within the small- and mid-cap segment, where inefficiencies create attractive opportunities for discerning investors.
Throughout his career, he has engaged with some of the most influential minds in global finance, including Warren Buffett, Charlie Munger, Jim Rogers, and George Soros. The unique insights gained from these conversations continue to inform his analytical perspective today. As a dedicated value investor, he is committed to translating complex market dynamics into clear, actionable ideas – empowering investors to make better-informed decisions.
Commented by Jens Castner
Commented by Jens Castner on June 24th, 2026 | 08:20 CEST
DIVIDENDS WITH SUBSTANCE: INTESA SANPAOLO, DWS GROUP, AND RE ROYALTIES UNDER THE MICROSCOPE
Dividend stocks have a decisive advantage in turbulent market conditions: They do not just promise dividends—they actually pay them. Investors who receive regular dividends are less reliant on perfectly timing their entry and exit points. The ongoing income cushions price fluctuations and provides predictability. But not every high dividend is a good dividend. What matters most is the sustainability of the payout. Ideally, a company combines both—an attractive yield and the fundamentals to sustain it over the long term. That is exactly what the major Italian bank Intesa Sanpaolo, the German asset manager DWS Group, and the Canadian renewable energy specialist RE Royalties offer. Three stocks, three risk profiles—and in each case, good reasons to take a closer look.
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Commented by Jens Castner on June 23rd, 2026 | 07:05 CEST
STELLANTIS, PURE ONE, AND VOLVO: THREE BETS ON THE FUTURE OF ZERO-EMISSION DRIVETRAINS
Electromobility is a divisive issue—both on the stock market and on the road. While Stellantis is supposedly trading at bargain levels following an 80% drop in its share price, investors are paying a hefty valuation premium for Volvo, the Swedish truck market leader. In between them is Pure One, an Australian micro-cap company that is reinventing the capital-intensive heavy-duty commercial vehicle business using the Apple model—and, according to analysts, has the potential to become a tenbagger. Three companies, three risk profiles, one common theme: Who has the lead in the race for zero-emission propulsion? A status report.
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Commented by Jens Castner on June 22nd, 2026 | 06:45 CEST
RBC, VOLATUS AEROSPACE, AND SHOPIFY: CANADA'S UNDERRATED WORLD-CLASS COMPANIES
Canada's stock market offers a highly attractive mix of ultra-stable, strictly regulated dividend strength and dynamic, cutting-edge technology. Three examples highlight why the global public should keep an eye not only on the country's national soccer team but also on the Toronto stock market. From the defensive banking pioneer RBC to the up-and-coming defence contractor Volatus Aerospace to the global tech powerhouse Shopify. What all three companies have in common is that they strategically leverage artificial intelligence (AI) to deliver real value to their customers.
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Commented by Jens Castner on June 19th, 2026 | 07:40 CEST
CHIPS, WAFERS, AND BATTERIES: TSMC DOMINATES, SILTRONIC STRUGGLES, HPQ SILICON GOES ON THE OFFENSIVE
The global technology industry is facing its greatest test yet. The battle for supremacy in microchips and battery materials has long since taken on a highly explosive geopolitical dimension. While nearly the entire tech sector is dependent on the Taiwanese giant TSMC, the operational hurdles faced by the German wafer specialist Siltronic reveal just how vulnerable Western supply chains really are. But away from the billion-dollar conglomerates, a new generation of challengers is quietly emerging. A prime example is the Canadian cleantech company HPQ Silicon, which is preparing to tackle dependence on Asian raw material monopolies at the root through disruptive plasma technologies.
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Commented by Jens Castner on June 18th, 2026 | 07:30 CEST
THE LAHONTAN GOLD FILE: HOW A GEOLOGICAL DETECTIVE TEAM IS AWAKENING NEVADA'S SLEEPING GIANTS
There are historical criminal cases that were never truly solved. One such "cold case" is the Santa Fe Gold Mine in Nevada. For three decades, the case file lay forgotten on a shelf: too old, too small, too uninteresting—until the geological detective duo Kimberly Ann and Brian Maher of Lahontan Gold retrieved the dusty drill cores from the evidence room to reexamine the evidence. The result of their investigation: millions of ounces of gold equivalent await discovery. The Santa Fe file is currently being rewritten—and those who start reading it early enough could be among the winners.
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Commented by Jens Castner on June 17th, 2026 | 06:50 CEST
SPACEX SOARS, ALMONTY ADVANCES, PLS REWARDS PATIENCE: THREE LESSONS IN RATIONAL INVESTING
An IPO that is electrifying the world. A mining company the market is currently misjudging. And an Australian commodities giant that rewards patience with share price gains. At first glance, SpaceX, Almonty Industries, and PLS are three completely different stories—yet they follow the same ironclad stock market logic: those who chase the hype pay the price, while those who think countercyclically are rewarded. While Wall Street debates trillion-dollar valuations, the real opportunities lie further down the supply chain—with companies without which neither rockets nor batteries for electric mobility would be possible.
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Commented by Jens Castner on June 16th, 2026 | 07:45 CEST
FROM THE MINE TO THE DATA CENTER: HOW TALEN ENERGY, AMERICAN ATOMICS, AND AMAZON ARE SECURING THE AI POWER OF THE FUTURE
Artificial intelligence has an Achilles' heel: it requires electricity around the clock. Round-the-clock power requires nuclear energy. Nuclear energy requires uranium. And this is precisely where supply and demand are drifting further and further apart. While Amazon is pumping hundreds of billions into AI infrastructure and energy providers like Talen Energy are securing the nuclear baseload with long-term contracts, the entire sector faces a bottleneck that hardly anyone has on their radar. American Atomics is working flat out to resolve it.
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Commented by Jens Castner on June 15th, 2026 | 07:30 CEST
SUPERINVESTOR ERIC SPROTT TAKES A STAKE IN POWER METALLIC MINES! BAE SYSTEMS AND BMW CAN BREATHE EASIER
Mining legend Eric Sprott is investing CAD 2.0 million in the Canadian exploration company Power Metallic Mines, sending a signal that resonates far beyond the mining sector. Copper, nickel, cobalt, and platinum group metals, which lie dormant in the ground in Québec, are in high demand by both the defence industry and automotive manufacturers. For companies such as BAE Systems and BMW, these critical raw materials are indispensable. Three companies, one supply chain—and a race the West cannot afford to lose.
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Commented by Jens Castner on June 11th, 2026 | 07:15 CEST
TOURMALINE OIL, MONTAUK RENEWABLES, AND ZEFIRO METHANE: WHO IS PROFITING FROM THE INVISIBLE CLIMATE KILLER?
Methane is significantly more potent than CO₂ as a greenhouse gas. Politicians worldwide are responding by imposing increasingly strict regulations on industry. Three companies have set their sights on the invisible climate killer: Tourmaline Oil turns emission savings into hard cash, Montauk Renewables converts landfill gas into clean energy, and Zefiro Methane plugs abandoned wells. Those who manage to stop or prevent the release of this potent greenhouse gas are rewarded by the government and the market with CO₂ credits. These certificates are worth hard cash. Traditional industrial and oil companies are scrambling for them to avoid their own emissions penalties.
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Commented by Jens Castner on June 8th, 2026 | 07:20 CEST
ANTIMONY RESOURCES, LYNAS RARE EARTHS, AND UMICORE: THREE PILLARS OF WESTERN RAW MATERIAL SOVEREIGNTY
Created and published on behalf of Antimony Resources Corp.
No fibre-optic cables without germanium, no specialized ammunition without antimony, no electric motors without neodymium: The West has maneuvered itself into a dead end. Fatal dependencies on strategic metals threaten to slow down defence capabilities, the energy transition, and technological progress. But the need for a turnaround has been recognized, and governments are pumping billions into building completely self-sufficient supply chains. For investors, this marks the beginning of a new, government-subsidized supercycle in the commodities markets. Companies such as the Canadian explorer Antimony Resources, the Australian rare-earth giant Lynas, and the Belgian recycling specialist Umicore stand to benefit from this.
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