The close of 2025 marked a year of stark contrasts in the global stock market, with significant gains overshadowed by notable underperformers. while major indices finished the year on a high note-fueled by optimism surrounding artificial intelligence and,as reported by Reuters,President Trump’s tariff policies-individual company performance varied widely [[3]]. Below,we detail the companies that led the charge and those that lagged behind,offering a snapshot of the market’s winners and losers over the past twelve months.
Standout Performers and Biggest Disappointments of 2025
Abivax (1,681%): The French biotech firm experienced a dramatic surge in its stock price following significant clinical advancements with its obefazimod candidate and increased investor interest, including discussions regarding a potential acquisition by U.S. pharmaceutical giant Eli Lilly. Abivax’s success marks a turning point for the French biotechnology sector, with its valuation now approaching that of Ipsen, signaling a renewed period of growth.
Fresnillo (436%): The mining group emerged as a top performer this year, benefiting from its exposure to gold and silver – two of the most profitable assets in 2025. Silver, in particular, saw a substantial increase of 148% in value over the past year, driven by its essential role as an industrial metal in the production of high-performance chips.
EchoStar (+374%): After nearing bankruptcy, the satellite communications company rebounded sharply thanks to substantial license sales to AT&T and SpaceX. These sales restored investor confidence and improved the company’s financial standing. The stock also benefited from its indirect exposure to SpaceX and anticipation surrounding a potential initial public offering of the space exploration company.
Micron (+239%): The memory chip and storage solutions manufacturer is capitalizing on a strong cycle fueled by the expansion of data centers and the rise of agentic AI, which is driving demand for memory and boosting its profit margins. This momentum could allow the company to break away from the historically cyclical nature of the semiconductor industry.
Renk (+192%): The German industrial company’s performance reflects a broader trend of increased investment in defense across Europe. Driven by decreased U.S. engagement and the ongoing conflict in Ukraine, European governments have committed to increased defense spending, benefiting companies like Rheinmetall, Saab, Rolls-Royce, Thales, Exosens, and Exail alongside Renk.
Hochtief (+160%): The German construction group is benefiting from a shift in Berlin’s budgetary priorities, with increased spending on infrastructure projects in addition to defense. Hochtief’s strong performance marks a turnaround after five consecutive years of decline from 2018 to 2022.
Société Générale (+153%): The French bank has rebounded significantly after years of underperformance, as the European banking sector as a whole has thrived. The Stoxx Europe 600 financial services index led gains in 2025, rising 53.2% excluding dividends, with Société Générale outpacing the sector thanks to a transformation plan viewed favorably by the market.
Siemens Energy (+139%): The German conglomerate successfully turned around its struggling energy division. However, the company’s exposure to the growth of artificial intelligence further accelerated its recovery, as Siemens Energy is a key supplier of heavy equipment for power generation used in data centers.
Underperforming Stocks of the Year
Orsted (-62%): The Danish wind energy champion faced a challenging year due to the Trump administration’s opposition to renewable energy projects. Washington’s reversal of previously approved offshore wind projects forced Orsted to pursue legal action, and the company was compelled to raise substantial capital to offset losses and rising financing costs.
WPP (-59%): The advertising group experienced disappointing operational performance, persistent pressure on marketing budgets, and concerns that AI could fundamentally weaken its business model. WPP is perceived to be lagging behind competitors like Publicis in its digital transformation, contributing to its underperformance.
Puma (-49%): The sportswear brand issued multiple profit warnings and struggled to gain traction against larger rivals Nike and Adidas, both of which also faced challenges. Even recurring rumors of a takeover by Chinese company Anta Sports failed to boost the stock’s value.
Novo Nordisk (-48%): Despite high expectations surrounding its duopoly with Eli Lilly in the anti-obesity drug market, Novo Nordisk’s performance fell short of projections. The company faced headwinds from the U.S. government’s efforts to lower drug prices and prioritize domestic champions.
Strategy (-47%): The technology company, heavily invested in Bitcoin, continued its decline in 2025, weighed down by cryptocurrency price drops, strong selling pressure, and trading below key moving averages, indicating a persistent downward trend. Despite significant Bitcoin acquisitions and increased cash reserves, the market remains focused on the risks associated with cryptocurrency and the volatility of its business model.
Lululemon (-45%): The premium athletic apparel brand had a difficult 2025, marked by warnings about slowing sales growth and margin pressure, as consumer behavior shifted towards price sensitivity despite increased foot traffic. The market penalized the loss of momentum from a former growth stock, increased competition, and uncertainties surrounding strategy and leadership.
Sodexo (-45%): The group suffered due to a slowdown in its North American business, with organic growth under pressure and reduced visibility into its margins. Analysts believe significant investment will be required to turn the company around under new leadership, with a transformation plan yet to be unveiled.
Wolters Kluwer (-45%): Traditionally a defensive stock, the publisher was impacted by concerns surrounding AI, which is seen as a potential threat to its high-value activities. Management attempted to demonstrate that its own AI solutions and its position as a trusted third party make it an essential player, but fears prevailed in 2025.
Diageo (-37%): The spirits industry experienced a challenging year, impacted by slowing demand, a shift in product mix, and the emergence of anti-obesity medications, which are altering consumer tastes and needs. Companies were also unable to rely on passing on significant price increases under the guise of high inflation, as they had done in the post-COVID period.
