Top Market Losers: Tecogen Inc. (AMEX: TGEN) Leads Declines Amid Earnings Miss

Font: Financial Modeling Prep  • May 19, 2026

• Tecogen Inc. (AMEX: TGEN) experienced the steepest decline following lower first-quarter revenue and a wider financial loss, despite strategic investments in research and manufacturing for the data center market.
• Other significant decliners included RoboStrategy, Inc. and LuxExperience B.V., with the latter reporting a third-quarter loss and missed revenue expectations.
• Leveraged financial products, such as the MicroSectors Gold Miners 3X Leveraged ETN (NYSEARCA: GDXU) and Leverage Shares 2x Long IREN Daily ETF (NASDAQ: IREG), also saw sharp drops, highlighting their amplified risk.

Several companies saw significant declines in today's trading. Tecogen Inc. (AMEX: TGEN) experienced the steepest fall, with its stock dropping 15.59% to close at $5.36. The industrial company designs and manufactures cogeneration systems, which are machines that provide both electricity and hot water from a single fuel source.

Tecogen Inc.'s decline follows its recent announcement of lower first-quarter revenue and a wider financial loss. Company management states these results are due to increased investments in research and manufacturing. These investments are part of a strategy to help the company expand into the data center market.

Other notable losers include RoboStrategy, Inc., which fell 14.63% to $24.21, and LuxExperience B.V., which dropped 11.81% to $6.87. LuxExperience B.V., an online luxury goods platform, reported a third-quarter loss of $0.16 per share and revenues that did not meet expectations. RoboStrategy, Inc., a fund focused on robotics, secured a new financing option to support its growth.

Leveraged financial products also faced steep declines. The MicroSectors Gold Miners 3X Leveraged ETN (NYSEARCA: GDXU) fell 11.90% to $136.55, while the Leverage Shares 2x Long IREN Daily ETF (NASDAQ: IREG) decreased by 11.17% to $16.15. These products are designed to multiply the daily performance of an asset, which also magnifies losses.

In summary, today's top market losers were affected by company-specific news, such as disappointing earnings reports. The declines also highlight the high-risk nature of leveraged products, which are built to amplify short-term market movements and are not intended for long-term investment.