3 Penny Stocks to Watch on June 26, 2025

Surf Air Mobility, Plus Therapeutics, and SeaStar Medical Holding emerge as the top penny stocks to monitor, according to TipRanks' Penny Stock Screener. These sub-$5 equities, with market caps below $300 million, saw significant trading activity on June 25.

Surf Air Mobility's $234.94 million dollar volume dominated the screen despite a 29.4% price drop. The electric aviation firm initially gained on Palantir's 19.9% stake acquisition before retreating after announcing new share issuance agreements.

The screener filters stocks by sector, price targets, and liquidity metrics—valuable for navigating these high-risk, high-reward securities. Dollar volume, reflecting both share price and trading activity, serves as a key liquidity indicator for penny stock traders.