Shares in Neste Corporation, the Finnish renewable diesel and sustainable aviation fuel producer, plunged in Helsinki trading on Thursday, 23 July 2026, after the company reported second-quarter earnings that missed market expectations. The stock fell by as much as 9% before recovering slightly, closing the session down 7.4% at €24.15. The sell-off was driven by weaker-than-anticipated refining margins and signs of softening demand in its core European and North American markets.
Neste said its renewable products segment, which accounts for the bulk of its revenue, saw average sales margins fall to $680 per tonne in the quarter, down from $820 per tonne in the same period last year. The company attributed the decline to an oversupply of renewable diesel in California and the US West Coast, as well as slower uptake of sustainable aviation fuel among European airlines. Analysts at Jefferies described the results as 'disappointing' and cut their price target for the stock, warning that margin headwinds could persist into the second half of the year.
The sell-off in Neste weighed on other European renewable energy stocks. Shares of UK-listed alternative fuel company Velocys fell 3.2%, while Clean Energy Fuels Corp, which has London-listed depositary receipts, dropped 2.8%. The Stoxx Europe 600 Oil & Gas index edged down 0.4%, but the broader renewable energy sub-index shed 1.6%, reflecting investor jitters over the sector's near-term profitability.
For UK investors, the Neste news is a reminder of the volatility inherent in the clean energy transition. Many British pension funds and retail portfolios hold exposure to renewable fuel producers through exchange-traded funds or actively managed sustainability funds. The FTSE 100 closed broadly flat on Thursday at 8,215.6, but the FTSE 250 fell 0.3% to 20,944.2, partly dragged by weakness in alternative energy stocks. Analysts at RBC Capital Markets noted that while the long-term outlook for renewable fuels remains positive, 'the path to profitability is bumpier than many had anticipated.'
The broader market context is also relevant. Brent crude oil prices edged lower to $82.40 a barrel on Thursday, as concerns about global demand growth persisted. Lower oil prices can reduce the incentive for refiners to shift to renewable feedstocks, as conventional diesel becomes cheaper. Neste's results underscore the challenge facing the industry: balancing the push for decarbonisation with the economic realities of commodity markets.