French biotechnology company Carbios, based in Clermont-Ferrand, saw its share price rise as much as 12.18% to €6.08 after the opening of the two markets. That day the company issued a press release announcing that, within the framework of the Fiber-to-Fiber alliance, it had produced regenerated polyester T-shirt garments from complex textile waste as feedstock via its enzymatic biological PET recycling process.

Key points

  • Carbios shares rose 12.18% intraday to €6.08, reclaiming the 20-day moving average of €5.60.
  • Partners are Patagonia, PUMA and Salomon; the process targets difficult-to-treat fiber blend waste.
  • First-half 2026 operating expenses fell 19% year on year, with cash reserves of €48 million.

This validation covers the complete chain from waste to finished garments, with partners including Patagonia, PUMA and Salomon. The technology used is enzymatic biological recycling targeting PET, applied here to fiber blends previously considered difficult to treat. For this technology developed in Clermont-Ferrand, actual results across the full chain constitute a staged industrial milestone.

From a technical perspective, the share price rebounded markedly above the 20-day moving average with a +8.57% gap, after having remained below that average for several weeks. The Relative Strength Index (RSI) is 44, still in neutral territory, meaning this gain does not yet constitute an overbought signal.

After the rebound, the share price is approaching resistance at €6.61, about 8.7% from the current price. Before reaching that resistance, it must first break through the 50-day moving average of €6.26, from which the price is currently 2.88% below, a matter that bears on the credibility of upward momentum. On a longer timeframe, the 200-day moving average of €7.85 remains far off, a gap of -22.55%, reflecting a cumulative 30% decline over the past year.

On fundamentals, first-half results released on September 24, 2026 showed operating expenses down 19% year on year, with cash reserves of €48 million.

For the used clothing and textile recycling industry, the value of this announcement lies in the fact that the enzymatic PET depolymerization route has, for the first time, been carried through the entire chain from waste to finished garments within a brand collaboration framework, providing a verifiable industrial pathway for chemical recycling of blended waste, though time is still needed before scaled capacity ramp-up.

Source: Carbios stock surges 12% in a single session following announcement · Originally published 2026-09-29