N2OFF Inc., NuCana plc, and Firefly Neuroscience are the 3 Penny Stocks to watch on May 6, 2025, based on TipRanks’ Penny Stock Screener tool. Penny stocks are defined as stocks that trade at or below $5 per share and have a market capitalization of below $300 million.
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The Penny Stock Screener helps investors scan stocks based on numerous parameters, including Sector, Price Target Upside, Smart Score, Analyst Consensus, Dollar Volume, and Price Change.
We leveraged the tool to pick the top three penny stocks with the highest Dollar Volume as of the close on May 5, 2025. Simply put, Dollar Volume is the number of shares traded on a particular day multiplied by the day’s share price.

N2OFF Inc. (NITO) – Israel-based N2OFF is an agriculture-food technology company that is focused on developing sustainable solutions for the plant-based food industry. The company operates through two subsidiaries: Save Foods Ltd. and N2OFF Ltd., both of which aim to reduce chemical exposure in food and enhance the shelf life of fresh produce.
On May 5, NITO had a Dollar Volume of $408.83 million, while its stock price skyrocketed by more than 140%. There was no specific news about N2OFF yesterday. However, the company had announced on April 8 its plans to maximize investment opportunities in the European market following the implementation of Section 8a of Germany’s Renewable Energy Act.
NuCana plc (NCNA) – NuCana is a clinical-stage biopharmaceutical company that is developing more effective and safer anti-cancer medicines through its proprietary phosphoramidate technology. Yesterday, NCNA stock had a Dollar Volume of $154.55 million, accompanied by a stock price surge of 139%.
On May 2, NuCana filed to issue up to 12,497,768 American Depositary Shares (ADS) representing 312,444,200 ordinary shares, along with Series A and Series B purchase warrants. The company intends to use the net proceeds from this offering, combined with its existing cash reserves, to undertake drug discovery and development programs as well as for general corporate purposes, such as working capital, capital expenditures, investments, and potential acquisitions.
Firefly Neuroscience (AIFF) – Firefly Neuroscience is a medical technology and AI company that is focused on developing neuroscientific solutions to improve brain health outcomes for patients suffering from mental illnesses and neurological disorders. On May 5, AIFF had a Dollar Volume of $99.53 million, while its stock price gained 2.5%.
Yesterday, the company announced the acquisition of medical device company, Evoke Neuroscience in a $6 million cash-and-stock deal. Evoke is building devices that assess human’s brain health, marking a major step toward building a proprietary foundation model of the human brain.
To find more penny stocks like these, you can take a look at TipRanks’ Penny Stock Screener tool. It shows a list of all penny stocks, their price movement, and other vital data.