Stock Markets, Week 39/26: RENIXX Slides Below 1,200 Points as Grenergy and First Solar Post Double-Digit Losses, Bloom Energy and EDP Renováveis Lead Gains

Münster – Rising US interest rates pushed the RENIXX World clearly below the 1,200-point mark last week. On Thursday, September 24, 2026, the index tumbled 3.51 percent to close at 1,172.78 points, dragged down by the highest ten-year US Treasury yield since 2007. That marked the index's lowest level since January 5, 2026.

The rate increase was triggered by a strong S&P Global purchasing managers' index showing the sharpest growth in business activity in more than five years. Market expectations for a further Federal Reserve rate hike in October rose from 55 percent to around 70 percent as a result. Capital-intensive US solar stocks, whose projects rely heavily on debt financing, were hit particularly hard: First Solar, Solaredge and Enphase each lost between 4 and 8 percent on the same day.

Bloom Energy and EDP Renováveis Lead Gains, Grenergy and First Solar Post Double-Digit Losses

The RENIXX World closed at 1,182.33 points on Friday, September 25, 2026, down 1.7 percent, or 20.23 points, from the previous week's close of 1,202.56 points (September 18, 2026). The biggest gainers were Bloom Energy (+6.9 percent), EDP Renováveis (+2.8 percent), Verbund (+1.9 percent), China Longyuan (+1.8 percent) and Ørsted (+1.4 percent). On the losing side, Grenergy (-12.5 percent), First Solar (-11.0 percent), Xinyi Solar (-8.7 percent), Jinkosolar (-7.1 percent) and Cadeler (-6.7 percent) led the declines. On a year-to-date basis, the RENIXX remains in positive territory, up 4.6 percent, or 51.96 points, from 1,130.37 points on December 30, 2025, though it is currently trading around 23.8 percent below its 52-week high of 1,550.58 points, reached on June 3, 2026.

Company News, Week 39/26

Ørsted and infrastructure investor Nuveen have officially inaugurated the Borkum Riffgrund 3 offshore wind farm, which has an installed capacity of 913 MW. Located in the German North Sea, the wind farm ranks among the largest offshore wind farms in Germany. Ørsted shares, which are listed on the RENIXX World, rose 1.4 percent last week to EUR 18.47.

Purchasing consortium Routing Energy and wind turbine manufacturer Vestas are launching a strategic partnership in the German onshore wind market. The collaboration is intended primarily to give small and medium-sized project developers and operators reliable conditions for procuring wind turbines. It includes regular exchanges on project pipelines, close technical dialogue and early coordination on delivery and service arrangements. According to the companies, the partnership is meant to increase planning certainty and speed up project implementation. Vestas shares fell 3.4 percent last week to EUR 26.68.

US solar and storage provider Sunrun and energy technology company SPAN plan to expand their partnership to cover decentralized AI data centers. Under the plan, computing nodes would be combined with solar systems, battery storage and smart power distribution units in newly built residential developments. Initial deployments are planned in Texas and other markets that have not yet been named. Sunrun shares, which are listed on the RENIXX World, closed at EUR 7.09 on September 25, 2026, down 4.4 percent from the previous week.

Technical Picture: 1,200-Point Mark Fails to Hold

After failing to break through resistance at the neckline near 1,257 points (intraday high of 1,257.61 points on September 8, 2026), the RENIXX fell clearly below the 1,190-to-1,200-point support zone on Thursday, September 24, 2026, dropping 3.51 percent on the day to close at 1,172.78 points. The decline since the September 8, 2026 high now totals around 6.7 percent. The former support zone has turned into resistance.

On Friday, September 25, 2026, the index closed at 1,182.33 points, down 1.7 percent from the previous week's close of 1,202.56 points on September 18, 2026.

As long as the RENIXX remains below the 1,190-to-1,200-point zone and below its 20-day moving average (1,215.35 points), 50-day moving average (1,240.18 points) and 200-day moving average (1,278.76 points, all based on the September 24, 2026 close), the broader downtrend that began at the 52-week high of 1,550.58 points on June 3, 2026, remains intact. The next support level from the year's trading range lies around 1,160 points, near the January and March 2026 lows.

RENIXX at the Start of the Week

In early trading at the start of the new week, the RENIXX is trading lower. The biggest losses are being recorded by Xinyi Solar, Bloom Energy, CATL, Array Technologies and Ormat, while Meridian Energy, China Longyuan, First Solar, Daqo New Energy and Cadeler are posting gains.

About the Global RENIXX World Stock Index and the Planned RENIXX ETF

The RENIXX® World (Renewable Energy Industrial Index, ISIN: DE000RENX014) is the world's first stock index dedicated to renewable energy and the oldest global stock market barometer for the sector. It covers wind energy, solar energy, bioenergy, geothermal energy, hydropower, electric mobility, hydrogen and fuel cells. The index comprises the 30 international companies with the highest free-float market capitalization in the sector and tracks both the performance and the global market development of the renewable energy industry. The RENIXX launched on May 1, 2006, with a base value of 1,000 points; a retroactive calculation was carried out back to 2002. The index is available through leading financial media and data providers including Bloomberg, Reuters, Financial Times, BlackRock (Aladdin) and Wallstreet Online. Companies included in the RENIXX currently have a combined free-float market capitalization of around EUR 180 billion.

To mark its 20th anniversary, IWR plans to launch an exchange-traded fund (ETF) that would make the RENIXX transparent, regulated and investable.

Source: IWR Online, 28 Sep 2026