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

On August 20, 2025, Tharimmune, Inc. (THAR) emerged as the top-performing penny stock with a remarkable 206.84% surge, while Elong Power Holding Limited (ELPW) suffered the steepest decline, plummeting 87.54%.

Top Gainers
Tharimmune, Inc. (THAR)
Tharimmune, a pharmaceutical company, saw its stock surge a staggering 206.84% today, ranking as the top mover in the penny stock market, reaching an intraday high of $4.05 and closing at $3.59. Reports indicate heightened investor attention stemmed from coverage of recent tragic events like the wandering elephant fatality in Ogun State (July 28th) and the Plateau attacks (July), potentially increasing focus on trauma and public health needs relevant to pharmaceutical solutions.

Novabay Pharmaceuticals, Inc. (NBY)
The pharmaceutical firm surged 71.67%, ranking as the day's second-largest penny stock gainer, hitting an intraday high of $1.25 and closing at $1.03. Industry sources link the rally to heightened demand for medical solutions following Nigeria's recent health crises, including fatal August 17–19 floods in Adamawa and a Lassa fever outbreak exceeding 800 cases, driving speculative investment in emergency response suppliers.

Pop Culture Group Co., Ltd (CPOP)
Pop Culture Group (CPOP), operating in the Entertainment sector, surged 33.26% today, ranking as the market's third-largest penny stock gainer. Shares reached an intraday high of $1.18 before closing at $1.13. Analysts point to recent Nigerian developments as a potential catalyst. Recent reports indicate progress on repairs for the vital Keffi flyover project with a federal 30-day deadline and confirmations that national refineries are operational, possibly signaling broader infrastructure investment and economic activity within key growth markets impacting regional entertainment demand. Despite the surge, the direct link to CPOP's core business remains unclear.

Rocket Pharmaceuticals, Inc. (RCKT)
Rocket Pharmaceuticals surged 28.87% today, ranking as the 4th top gainer in the penny stock market. Shares reached an intraday high of $4.10 before closing at $3.75, reflecting significant bullish momentum within the Biotechnology sector. Near-term industry developments include reports on August 20 highlighting advancements in artificial womb technology poised to reshape fertility medicine, alongside news on August 26 emphasizing enhanced laboratory capabilities driving innovation in life sciences, collectively fueling investor optimism toward pioneering biotech firms like Rocket.

Splash Beverage Group, Inc. (SBEV)
Splash Beverage Group, Inc. (SBEV) surged 27.63% today, ranking as the 5th biggest gainer in the penny stock market, reaching an intraday high of $2.40 before closing at $1.95 within the Beverages industry. Recent reports suggest Nigeria's market conditions, including local safety incidents and heightened regulatory focus on essential consumer goods within the past five days ending Aug 20, may be driving investor interest in alternative beverage players exploring international opportunities.

Top Decliners
Elong Power Holding Limited (ELPW)
Electrical equipment firm Elong Power Holding Limited (ELPW) experienced a precipitous decline today, plummeting 87.54% to secure the position as the worst-performing penny stock. Shares reached an intraday low of $0.26 before closing at $0.41. Meanwhile, recent reports indicate a deadly infrastructure collapse involving a beam falling on the Keffi flyover, requiring emergency federal repairs, coupled with the distressing abduction of two women in Abuja, heightening concerns over regional stability.

Star Fashion Culture Holdings Limited (STFS)
Star Fashion Culture Holdings Limited, operating in the media sector, witnessed a dramatic stock plunge of 78.99% today, ranking as the second-largest decliner among penny stocks. The stock hit an intraday low of $0.38 and closed at $0.44. Recent fatal flooding in Adamawa and Plateau attacks amplified nationwide security concerns, while government warnings over escalating fake news proliferation heightened regulatory scrutiny for media firms.
(Note: News selection rationale: Adamawa flood (Aug 17) and Plateau attacks (reported Aug 21) occurred within the 5-day window, directly exacerbating regional instability affecting media operations, complemented by fake news warnings increasing sectoral regulatory risks.)

Windtree Therapeutics, Inc. (WINT)
Windtree Therapeutics, a biotechnology firm, experienced a severe decline of 77.23% today, ranking as the third largest drop among penny stocks. Its share price reached an intraday low of $0.10 and closed at $0.11. Contributing factors include ongoing regulatory pressures highlighted by government warnings on misinformation threats and stringent infrastructure repair deadlines issued recently. Reports also suggest a challenging political climate impacting the broader market environment played a role in the sharp sell-off.

Envveno Medical Corporation (NVNO)
NVNO, a Healthcare Equipment & Supplies company, plunged 72.08% today to close at $1.17 (intraday low $1.15), ranking as the 4th worst performer among penny stocks. Investor sentiment soured on reports indicating recent political changes in Lagos could disrupt healthcare procurement, coupled with concerns over potential supply chain delays exacerbated by natural disasters impacting West Africa.

Calidi Biotherapeutics, Inc. (CLDI)
Calidi Biotherapeutics, Inc. (CLDI), operating in the Biotechnology sector, experienced a significant downturn today. Its stock plummeted 42.67%, ranking as the fifth largest decliner among penny stocks. The share price reached an intraday low of $1.65 before closing at $1.70.
No specific corporate news or catalysts directly attributable to Calidi Biotherapeutics were identified within the immediate five-day timeframe surrounding August 20, 2025. The steep decline appears driven by broader market dynamics or investor sentiment impacting penny stocks without recent company-specific announcements. Analysts suggest this volatility highlights the inherent risk in the sector lacking fresh operational updates.