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

On June 30, 2025, the penny stock market witnessed significant fluctuations, with Wag! Group Co. (PET) emerging as the top gainer after its stock surged by a remarkable 120%, and JVSPAC Acquisition Corp. (JVSA) experiencing the most significant decline with a dramatic plunge of 65.98%. These movements exemplify the volatile nature of the penny stock market, driven by a variety of strategic company announcements and market reactions.

Top Gainers
Wag! Group Co. (PET)
Wag! Group Co., a key player in the Comprehensive Consumer Services industry, witnessed a remarkable 120% surge today, topping the penny stock market rankings. The stock reached an intraday high of $0.26 before closing at $0.23. Recent reports indicate that despite a revenue decline in Q1 2025 to $15.2 million, Wag! Group Co. has improved profitability through rigorous cost management. Additionally, analysts say that the company's ambitious revenue target of $84M-$88M for 2025 has fueled investor optimism, contributing significantly to today's stock performance.

Professional Diversity Network, Inc. (IPDN)
Professional Diversity Network, Inc., specializing in information technology services, saw its stock skyrocket by 93.14% today, securing the second spot in the penny stock market rankings. The stock reached an intraday high of $4.94 before closing at $3.38. Reports indicate that on June 28, 2025, Professional Diversity Network announced pricing of a $2 million registered direct offering and concurrent private placement, which analysts say significantly boosted investor confidence and contributed to today's stock surge.

Klotho Neurosciences, Inc. (KLTO)
Klotho Neurosciences, Inc. saw a remarkable stock surge of 56.94% today, ranking it third in today's penny stock market movers. The company, which operates in the life sciences tools and services industry, hit an intraday high of $1.39 before closing at $1.13. Recent developments have bolstered investor confidence. Reports indicate that on June 30, 2025, Klotho announced advancements in manufacturing and process development, following a successful $11 million raise earlier in the month, fueling the stock's surge.

Vor Biopharma Inc. (VOR)
Vor Biopharma Inc., a biotechnology company, saw its stock price soar by 52.83% today, ranking fourth in the penny stock market. The stock reached an intraday high of $1.74 before closing at $1.62. Reports indicate that on June 25, 2025, Vor Bio secured a $175 million private placement and entered a $42.3 billion licensing deal for autoimmune treatment, boosting investor confidence significantly.

Mega Matrix Inc. (MPU)
Mega Matrix Inc., a key player in the commercial services and supplies industry, saw its stock surge by 43.75% today, ranking fifth in the penny stock market. The stock hit an intraday high of $1.31, closing at $1.15. Reports indicate that on June 25, Mega Matrix Inc. announced its first Bitcoin purchase, acquiring 12 Bitcoins as part of its strategic treasury move. This move, coupled with the board's approval to include Bitcoin and Ethereum as reserve assets, has significantly boosted investor confidence.

Top Decliners
JVSPAC Acquisition Corp. (JVSA)
Jvspac Acquisition Corp., a shell company in the financial sector, experienced a dramatic -65.98% stock plunge today, positioning it as the top decliner in the penny stock market. The stock hit an intraday low of $3.12 and closed at $3.64. Reports indicate that on June 24, 2025, JVSPAC shareholders approved key merger proposals at an extraordinary general meeting, while analysts say Hotel101's NASDAQ listing progression has added volatility to JVSA's stock performance.

JVSPAC Acquisition Corp. (JVSAU)
JVSPAC Acquisition Corp. (NASDAQ: JVSAU) experienced a significant stock decline of 64.33% today, ranking it second among penny stocks in terms of daily loss. The stock reached an intraday low of $4.01 before closing at $4.35. As a shell company in the financial sector, JVSAU is based in Hong Kong. Recent reports indicate that shareholders approved merger propositions with Hotel101 Global, a move that sparked concerns among analysts about the impact on JVSAU's market presence, contributing to today's sharp drop in stock value. The approval was granted during an extraordinary general meeting on June 24, 2025.

Tianci International, Inc. (CIIT)
Tianci International, Inc., a company in the ocean transportation industry, experienced a significant stock decline today, with a drop of 58.62%, ranking it third in today's penny stock market. The intraday low was recorded at $0.63, and the stock closed at $0.78. Recent developments may have contributed to this downturn. On June 29, 2025, reports indicate that Tianci International announced a $7 million public offering, which analysts say could lead to stock dilution concerns. Furthermore, on June 28, 2025, the company reported raising net proceeds of $5,217,937, which might have intensified market apprehension.

Inmune Bio Inc. (INMB)
Shares of Inmune Bio Inc., a pharmaceutical company, experienced a dramatic drop of 56.66% today, ranking fourth in the penny stock market. The stock reached an intraday low of $2.00 and closed at $2.31. Reports indicate that the stock plunge was influenced by the company's failure to meet the main goal in its Alzheimer's treatment study announced on June 30, 2025, and its recent $19 million direct offering priced at-the-market under Nasdaq rules.

Ostin Technology Group Co., Ltd. (OST)
Ostin Technology Group Co., Ltd. (OST), a key player in the electronic equipment, instruments, and components industry, witnessed a significant decline today, with its stock plummeting by 54.86%, ranking fifth among penny stocks. The intraday low hit $0.13, while the closing price was slightly higher at $0.16. Recent reports indicate that on June 27, 2025, the company issued a statement addressing unusual market activity, and on June 30, 2025, analysts say the $5 million direct offering could have contributed to today's drastic stock price drop.