Penny Stocks on the Move: Today’s Top Gainers and Biggest Decliners

On September 4, 2025, the penny stock market witnessed significant momentum shifts with Concorde International Group Ltd (CIGL) surging 97.96% as the top gainer, while Artelo Biosciences, Inc. (ARTL) plummeted 50.34% as the steepest decliner amid broader sector movements.

Top Gainers
Concorde International Group Ltd (CIGL)
Concorde International Group Ltd (CIGL) surged 97.96%, ranking first among penny stocks today, hitting an intraday high of $4.74 before closing at $2.91 in the Commercial Services and Supplies sector. Reports indicate a $26.39 million inflow into the marketing sector as investors return, while the Federal Government’s civil service job shortlisting may boost commercial services firms.

Brillia Inc (BRIA)
Brillia Inc (BRIA), operating in the Textiles, Apparel & Luxury Goods sector, surged 62.11% today, ranking second among penny stocks. The stock reached an intraday high of $4.95 and closed at $4.18. Recent reports highlight Nigeria's Federal Government shortlisting candidates for civil service positions alongside 9mobile's rebranding to T2 within the past week, signaling domestic economic activity that may influence sector sentiment.

NovaBay Pharmaceuticals, Inc. (NBY)
NovaBay Pharmaceuticals, Inc. (NBY), operating in the Pharmaceuticals industry, surged 57.46% today, ranking as the 3rd top gainer among penny stocks. The stock reached an intraday high of $4.44 before closing at $4.16. While NBY experienced a significant surge today, no company-specific news directly contributing to this movement within the past five days (Aug 31 - Sep 4, 2025) was identified in the reviewed reports. The price action appears currently uncatalyzed by recent public announcements.

Duluth Holdings Inc. (DLTH)
Duluth Holdings Inc. (DLTH), operating in the Textiles, Apparel & Luxury Goods sector, surged dramatically today, ranking as the fourth-largest gainer in the penny stock market with a 52.12% increase. The stock reached an intraday high of $4.66 before closing at $3.59. Significant investor interest emerged following multiple reports of escalating violent crime and kidnappings in major Nigerian cities over the past several days, including incidents directly impacting communities reported through September 1st and 2nd. Analysts link this focus on security concerns to Duluth's core product lines.

Hour Loop, Inc. (HOUR)
Hour Loop surged 48.80% today to close at $1.89 after touching an intraday high of $1.90, ranking as the fifth-largest gainer among penny stocks. The diversified retail company's shares reacted positively to recent Nigerian economic developments, including a major telecom rebranding effort promising innovation and customer improvements announced September 4th, alongside significant government job shortlisting reported September 5th bolstering market sentiment.

Top Decliners
Artelo Biosciences, Inc. (ARTL)
Artelo Biosciences, a pharmaceuticals firm, plummeted 50.34% today, ranking as the penny stock market's worst performer. Shares traded as low as $4.20 before closing at $4.35. Reports indicate significant security crackdowns in Nigeria, including major police operations against organized crime groups on September 4th and surrounding days, heightening regional instability concerns.

Aethlon Medical, Inc. (AEMD)
Aethlon Medical, Inc. (AEMD), operating in the Healthcare Equipment & Supplies sector, plummeted 45.63% today, ranking as the day's second-largest decline among penny stocks. The stock hit an intraday low of $0.69 before closing at $0.73. Negative sentiment appears linked to recent company-specific updates. Reports indicate progress on an FDA submission received market skepticism this week, while concerns regarding near-term capital resources also emerged within the past five days, contributing to the selloff.

Purple Biotech Ltd. (PPBT)
Purple Biotech (PPBT), operating in the Pharmaceuticals sector, plummeted 45.07% to close at $0.78 after hitting an intraday low of $0.72, ranking as the third-worst performer in today's penny stock market. The plunge coincides with a September 4 announcement of an $18 million public offering at $1.00 per share, significantly diluting existing holdings, while reports indicate the company expanded its CAPTN-3 portfolio with a novel antibody candidate on September 3.

707 Cayman Holdings Limited (JEM)
Shares of Cayman-incorporated specialty retailer 707 Holdings (JEM) plummeted 44.66% today, ranking as the fourth-largest decline among penny stocks. The stock hit an intraday low of $0.37 before closing at $0.42. Industry observers cited broader market concerns impacting Nigerian-linked investments. Specifically, market sentiment was dampened by early September reports of significant telecom sector realignment affecting consumer markets and late-August updates on intensified security operations following violent incidents in key commercial regions like Lagos, raising investor risk aversion.

Next Technology Holding Inc. (NXTT)
The software company's stock plummeted 44.57%, ranking as the fifth-largest decline among penny stocks today, closing at $0.14 after hitting an intraday low of $0.13. Reports indicate intensified competition in Nigeria's telecom sector following a major competitor's rebranding to T2 on September 5th, alongside regulatory pressures for infrastructure investment contributing to the significant sell-off.