Top 10 Penny Stocks in the US to Watch in October 2025
ByAinvest
Wednesday, Oct 1, 2025 2:25 pm ET1min read
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Avingtrans plc
Avingtrans plc, with a market cap of £163.33 million, operates through its subsidiaries to deliver engineered components, systems, and services across the energy, medical, and infrastructure sectors. The company generates revenue from two primary segments: Energy Advanced Engineering Systems, contributing £151.46 million, and Medical and Infrastructure Services, contributing £11.01 million [3].
Dingdong (Cayman) (DDL)
Dingdong (Cayman) (DDL) is a clinical-stage biotechnology company that focuses on developing innovative treatments for serious ocular illnesses. The company's main focus is on wet age-related macular degeneration (AMD), which is the leading cause of blindness in older adults. Dingdong's gene therapy, ixoberogene soroparvovec (ixo-vec), is designed to be administered as a single intravitreal injection, delivering a genetic sequence that allows the eye to generate a therapeutic protein (aflibercept) for long-term treatment [2].
Waterdrop (WDH)
Waterdrop (WDH) is a biotech company that specializes in drug development, medical devices, and cutting-edge therapies such as gene editing or immunotherapy. The company's flagship product, neffy (also known as ARS-1), is the first and only FDA- and EU-approved needle-free intranasal epinephrine spray. It is an emergency treatment for Type I allergic responses (foods, drugs, insect bites, etc.), which can result in life-threatening anaphylaxis [2].
These companies have strong financial health ratings, indicating potential for significant returns. Other top penny stocks include Sensus Healthcare (SRTS), Performance Shipping (PSHG), Golden Growers Cooperative (GGRO.U), Table Trac (TBTC), BAB (BABB), Lifetime Brands (LCUT), and Universal Safety Products (UUU). These companies have solid financials and growth potential, making them worth considering for investors.
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The article highlights three promising penny stocks: Dingdong (Cayman) (DDL), Waterdrop (WDH), and WM Technology (MAPS). These companies have strong financial health ratings, indicating potential for significant returns. Other top penny stocks include Sensus Healthcare (SRTS), Performance Shipping (PSHG), Golden Growers Cooperative (GGRO.U), Table Trac (TBTC), BAB (BABB), Lifetime Brands (LCUT), and Universal Safety Products (UUU). These companies have solid financials and growth potential, making them worth considering for investors.
The UK's FTSE 100 index has recently faced downward pressure due to weak trade data from China, highlighting ongoing struggles in the global economy. Amid such market fluctuations, identifying stocks with strong fundamentals becomes crucial for investors seeking potential opportunities. Penny stocks, often representing smaller or emerging companies, can offer a blend of affordability and growth potential when backed by solid financials. This article explores three UK penny stocks that stand out for their financial health and potential value.Avingtrans plc
Avingtrans plc, with a market cap of £163.33 million, operates through its subsidiaries to deliver engineered components, systems, and services across the energy, medical, and infrastructure sectors. The company generates revenue from two primary segments: Energy Advanced Engineering Systems, contributing £151.46 million, and Medical and Infrastructure Services, contributing £11.01 million [3].
Dingdong (Cayman) (DDL)
Dingdong (Cayman) (DDL) is a clinical-stage biotechnology company that focuses on developing innovative treatments for serious ocular illnesses. The company's main focus is on wet age-related macular degeneration (AMD), which is the leading cause of blindness in older adults. Dingdong's gene therapy, ixoberogene soroparvovec (ixo-vec), is designed to be administered as a single intravitreal injection, delivering a genetic sequence that allows the eye to generate a therapeutic protein (aflibercept) for long-term treatment [2].
Waterdrop (WDH)
Waterdrop (WDH) is a biotech company that specializes in drug development, medical devices, and cutting-edge therapies such as gene editing or immunotherapy. The company's flagship product, neffy (also known as ARS-1), is the first and only FDA- and EU-approved needle-free intranasal epinephrine spray. It is an emergency treatment for Type I allergic responses (foods, drugs, insect bites, etc.), which can result in life-threatening anaphylaxis [2].
These companies have strong financial health ratings, indicating potential for significant returns. Other top penny stocks include Sensus Healthcare (SRTS), Performance Shipping (PSHG), Golden Growers Cooperative (GGRO.U), Table Trac (TBTC), BAB (BABB), Lifetime Brands (LCUT), and Universal Safety Products (UUU). These companies have solid financials and growth potential, making them worth considering for investors.

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