Been scrolling through penny stocks lately and honestly, finding solid ones under $3 that are actually worth holding is tougher than it looks. Most people chase quick trades, but if you're actually trying to invest, you gotta be selective about which cheap stocks you're picking up.

The thing is, there's no shortage of stocks under $3 out there - biotech alone is packed with them. But here's what I've learned: stick to NYSE and NASDAQ listings if you can. Yeah, the price tag might be lower, but these are way more liquid and easier to move if you need to. Plus there's actual regulatory oversight, which matters when you're playing in the penny stock arena.

Let me run through seven that caught my attention. Golden Minerals (AUMN) is a mining play that's actually got interesting fundamentals compared to most of its peers. They weren't profitable yet when this was written, but the revenue jumped 66% quarter over quarter - that's the kind of momentum you look for. Fair warning though: their cash flow situation is messy, which is typical for mining expansion.

Tilt Holdings (TLLTF) operates differently - they're consulting for cannabis businesses rather than growing themselves. That's actually smart positioning given how fragmented the industry still is. Their cash profits hit $16.9 million last year versus a loss the year before, and operating expenses dropped 17.7%. Still, OTC stocks carry extra risk no matter what.

Motus GI (MOTUS) makes medical devices for colonoscopy prep - sounds niche but solves a real problem. Their balance sheet looked solid with $19.7 million in net cash, and while free cash flow was still negative, it was trending the right way. Analysts were talking about $2.50 per share as a target, which would be over 100% upside.

Waitr Holdings (WTRH) jumped into the food delivery space when it was getting crowded. That's risky, but the company's small enough to be an acquisition target for bigger players. They've had profitability struggles, but the business generates cash and they're carrying only $12.4 million in net debt.

Blue Hat Interactive (BHAT) is actually one of the rare profitable penny stocks out there. China-based, making AR games and educational toys. Revenue was up 26.7%, though underlying profits actually dipped. Still, with $9.9 million in net cash, they're in better shape than most.

Castor Maritime (CTRM) operates shipping vessels - this one was rough during the pandemic with a $1.8 million loss and negative cash flow. Shipping industry should recover though, and the financials got hit partly because they were expanding. Definitely higher risk, but positioned for a bounce-back.

Biolase (BIOL) sells medical and dental laser systems. Not profitable yet, but losses narrowed to $16.8 million and they're creeping closer to positive free cash flow each year. Their balance sheet is solid with more cash than debt.

Look, stocks under $3 are inherently risky - that's just the reality. But if you're doing homework on the fundamentals and focusing on the regulated exchanges, there are opportunities scattered around. The key is looking for companies that are actually moving in the right direction, not just chasing the cheapest ticker.