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 September 11th, 2026 | 07:50 CEST
ZEFIRO METHANE: DOWNTREND BROKEN, STOCK GAINING MOMENTUM – ANALYSTS SEE 200% UPSIDE
Created and Published on Behalf of Zefiro Methane.
America has a methane problem. Millions of orphaned oil and gas wells lie beneath forests, pastures, and residential areas. Many are leaking, and their owners are deceased, insolvent, or no longer locatable. Zefiro Methane offers solutions to permanently plug these climate-damaging wells and prevent further greenhouse gas emissions. So far, the company, which can barely keep up with the volume of orders, is known only to a small circle of insiders. The stock is still trading in the penny stock territory. However, analysts expect that to change soon. Their price targets indicate upside potential ranging from 50% to more than 200%.
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Commented by Jens Castner on September 3rd, 2026 | 08:20 CEST
Roadmap Instead of Guesswork: Finexity, Lahontan Gold and BMW on a Clear Path to the Future
Promises about the future are what drive the stock market. But they are not always credible. Some companies, however, openly lay out their roadmaps—with clearly defined milestones rather than mere hope. Three examples illustrate just how different this can look: Finexity, a Hamburg-based fintech company reinventing securities trading; Lahontan Gold, a Canadian exploration company on the verge of entering production; and German blue-chip BMW. The Munich-based automaker is defining a "Neue Klasse" (New Class) not just on the road. Investors should keep all three stocks on their radar.
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Commented by Jens Castner on August 31st, 2026 | 07:25 CEST
Arms Boom Meets Steel Revolution: A New Era for Salzgitter, Strategic Resources and SSAB
Europe is rearming. Above all, the continent needs steel to do so. Tanks, frigates and submarines consume quantities of material that are pushing existing production facilities to their limits. At the same time, a quieter but equally consequential transformation is underway: the shift toward more climate-friendly steelmaking processes. Whoever controls the raw material supply chains behind this transition holds the key to a story that the market has yet to price in. This is where Strategic Resources, a still largely undiscovered small-cap, has all the pieces in place. The Canadian company delivers exactly what German industry heavyweights such as Salzgitter are desperately seeking. Swedish steel and armored steel monopolist SSAB has already begun exploring the opportunity.
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Commented by Jens Castner on August 28th, 2026 | 10:00 CEST
Wind, Hydrogen, World-Class Dividend: Nordex and Enapter Battle It Out, RE Royalties Cashes In
The energy transition showcases every facet of stock-market madness. Nordex shares have multiplied in value, but suddenly politics and analysts are creating headwinds. Enapter, meanwhile, is at rock bottom and is looking to fight its way back up. At the other end of the spectrum is a Canadian small-cap that benefits from the growth of new energy without building a single wind turbine or electrolyser itself: RE Royalties. For years, the company has reliably paid high dividends, yet its share price stubbornly refuses to budge. Investors can choose between a hydrogen crash, a wind power roller coaster, and a world-class dividend.
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Commented by Jens Castner on August 27th, 2026 | 07:15 CEST
Like a Phoenix Rising from the Ashes: Deutsche Telekom, Almonty and Abbott Are Back on Track
For months, Deutsche Telekom, Almonty Industries, and Abbott Laboratories were headed in only one direction: down. Then the quarterly results came in—and with them, a breakthrough. For Deutsche Telekom and Almonty, a combination of growth and share buybacks sparked the initial rally; for Abbott, it was the confirmation that two negative one-time effects were only temporary. A sustained breakout from the downtrend is now a reality for all three stocks. How far is the road back to previous highs, and where do analysts even see potential for new all-time highs?
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Commented by Jens Castner on August 26th, 2026 | 10:10 CEST
Amazon, Volatus Aerospace and SUSS Microtec: Three Stocks, One Pattern - And Up To 100% Upside Potential
First came the euphoria, then the disappointment. A pattern has recently emerged in the stock market: even strong quarterly results rarely sustain the initial share price surge. That is because, upon closer inspection, question marks often arise—for example, regarding Amazon's investments, SUSS MicroTec's conservative full-year outlook, or the restructuring of Volatus Aerospace's business model. The three companies represent very different applications of artificial intelligence: cloud infrastructure, manufacturing equipment for the semiconductor industry, and AI-powered autonomous drones. The good news: following these setbacks, analysts once again see significant upside potential—25%, 50%, or even 100%.
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Commented by Jens Castner on August 25th, 2026 | 06:50 CEST
DIRTY GAS, CLEAN RETURNS, MORE THAN 200% PRICE POTENTIAL: WM, VEOLIA AND ZEFIRO METHANE
Created and Published on Behalf of Zefiro Methane.
WM and Veolia Environnement generate billions in revenue from waste collection and water services. But both companies can do much more: energy generation from landfill gas, CO₂ storage, and the removal of "forever chemicals". According to analysts, however, the greatest upside potential among these environmental remediation companies lies with a Canadian hidden gem whose name alone reveals what it is all about — Zefiro Methane. Three stocks, one common theme: Who cleans up what others have left behind?
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Commented by Jens Castner on August 24th, 2026 | 08:25 CEST
From Power Plants to Servers: NU E Power, PFISTERER and Dell at the Key Junctures of the AI Boom
Created and Published on Behalf of NU E Power Corp.
The AI hype on the stock market usually revolves around the same old heavyweights. While the massive investments by Alphabet, Amazon, and others are fueling controversial discussions, the real bottleneck of the boom lies further down the value chain—in energy generation, its distribution, and the hardware that ultimately converts it into computing power. Those who recognize this connection will find attractive investment opportunities even beyond the well-known names. This is exactly where NU E Power, PFISTERER, and Dell Technologies come in. Three completely different companies, but each representing one of the closely intertwined stages of the same story: making money long before the giants' investments pay off.
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Commented by Jens Castner on August 21st, 2026 | 07:35 CEST
The AI Agent Thriller: SAP Delivers, C3.ai Stumbles – and Miivo Aims for the Lead Role
Created and Published on Behalf of Miivo AI.
For months, Germany's largest software company, SAP, was cast as the prime suspect in an industry supposedly facing disruption from AI agents—until its quarterly results delivered a surprising twist to the story. Meanwhile, C3.ai demonstrates just how quickly the hunter can become the hunted when the agent AI narrative fails to translate into sufficient revenue growth. Positioned in the middle is Miivo AI, a Canadian newcomer that has operated largely behind the scenes so far and is targeting precisely the market where SAP established a strong foothold more than two decades ago: the SMB market. So, who has the best chance of a happy ending in this stock market thriller?
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Commented by Jens Castner on August 20th, 2026 | 07:50 CEST
Ammunition, Engines, Mines: Rheinmetall, Mercedes-Benz and Power Metallic Mines in the Raw Materials Race
The defence industry is booming, the automotive sector is electrifying—and both are competing for many of the same raw materials: copper, nickel, and platinum-group metals. Their production is often concentrated in politically sensitive regions such as Russia, while China controls a large share of global processing. The result: companies that fail to secure supplies in time risk production lines grinding to a halt. Rheinmetall needs these metals for ammunition and armoured vehicles, Mercedes-Benz needs them for batteries and electric motors, and Power Metallic Mines aims to supply them. We take a closer look at the potential upside for the shares of this trio.
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