LPKF Laser: UBS Takes a 3% Stake as Warburg Flips to Bullish on Glass Substrate Bet

UBS Group acquires 3.01% stake in LPKF Laser as shares tumble 12% after half-year revenue plunges 38%. Warburg upgrades to Buy, citing long-term LIDE technology potential.

The ownership structure of LPKF Laser has shifted notably this week, with UBS Group AG crossing the 3% disclosure threshold on July 24 and now holding a 3.01% stake — or 3.15% when including instruments. The Swiss banking giant’s entry comes at a moment of extreme price turbulence for the German technology firm, whose shares have swung wildly since last Thursday’s half-year report revealed a steep revenue decline.

Warburg Research responded to the selloff by upgrading the stock from “Hold” to “Buy” on Monday, with analyst Malte Schaumann lifting the price target sharply from €16.00 to €23.50. He described the market’s reaction to the interim results as excessive, arguing that the current price level represents an attractive entry point — particularly given the long-term potential of LPKF’s glass substrate technology. The upgrade provided only temporary relief, however. After rallying on Monday, the stock fell back on Tuesday, trading at €13.35, down 12.17% from the prior day’s close.

Half-Year Results Expose Solar Weakness

The catalyst for the volatility was the half-year report for 2026, released last Thursday. LPKF posted a 38.3% drop in revenue to €36.5 million, compared with €59.2 million in the same period last year. The solar segment was the primary drag in the second quarter. Operating performance deteriorated sharply: EBIT swung to minus €14.1 million from a loss of just €1.7 million a year earlier, while adjusted EBIT came in at minus €10.4 million.

Despite the weak first-half numbers, management maintained its full-year guidance. The company still expects revenue between €105 million and €120 million for 2026, with an adjusted EBIT margin ranging from minus 3.0% to plus 4.5%. Order intake offered a glimmer of hope — at €24.1 million in the first quarter, it exceeded the prior-year level and produced a book-to-bill ratio of 1.4.

LIDE Market Potential Triples

The centerpiece of LPKF’s long-term narrative remains its LIDE (Laser Induced Deep Etching) technology, and the company dramatically revised its market assessment on Thursday. The addressable market for advanced packaging solutions through 2030 was raised to approximately €1.7 billion — more than triple the previous estimate of €500 million. The revision reflects growing demand tied to high-performance computing and artificial intelligence applications.

Operational progress is beginning to match the ambition. LPKF reported new LIDE orders from a specialty glass manufacturer and a research system order from Penn State University. To shore up profitability amid the current weakness, the company is pushing ahead with its “North Star” transformation program. The first phase of workforce reductions was completed in the second quarter, and management expects restructuring costs to total between 3% and 4% of full-year revenue.

Insider Buying Signals Confidence

The stock’s recent slide has pushed it 35.50% below its 50-day moving average, though it remains 20.14% above its 200-day average of €11.61 — a sign that the longer-term trend has not fully broken. Chief Financial Officer Peter Mümmler demonstrated his own conviction by purchasing shares worth roughly €21,000 at €14.00 apiece on Thursday, the same day the half-year results were released.

Investors will get the next detailed update on October 29, when LPKF publishes its quarterly statement for the period ending September 30. Meanwhile, the company’s annual general meeting in early June added Arne Schneider, CEO of Elmos Semiconductor, to the supervisory board — a personnel move that could bring additional semiconductor industry expertise to the oversight of LPKF’s strategic shift toward advanced packaging.