How to Evaluate a Penny Stock

Check SEC Filing Status

Before anything else, verify whether the company files reports with the SEC. If a company doesn't file, you're investing blind.

What to check:

• EDGAR filings: Search on SEC EDGAR for recent 10-K and 10-Q filings.
• OTC Markets status: Check for Current, Limited, or No Information designation.
• Auditor opinion: Look for "going concern" qualifications in the 10-K.

If a company isn't SEC-reporting current, move on. There are thousands of penny stocks that do file.

Analyze the Share Structure

The share structure tells you how diluted the stock already is and how much room there is for more.

Key numbers:

• Authorized shares — the maximum the company can issue
• Outstanding shares — currently issued. If approaching authorized, expect a ceiling increase request.
• Float — shares available for public trading
• Convertible notes and warrants — shares that haven't been created yet but can be at any time

Use the Dilution Calculator to model what happens when warrants or notes are exercised.

Calculate the Cash Runway

Most penny stocks are pre-revenue. Their survival depends on how long their cash will last.

Cash Runway = Total Cash ÷ Monthly Burn Rate

Where to find the numbers:

• Total cash: Balance sheet → "Cash and cash equivalents" in the latest 10-Q
• Monthly burn: Quarterly operating expenses ÷ 3, or compare cash between two consecutive quarters

If a company has less than 6 months of runway, expect a financing event (offering, convertible note, or PIPE) soon.

Track Insider Activity

Insiders know more about the company than anyone. Their transactions are one of the most reliable signals.

What to look for:

• Form 4: Completed insider transactions. Cluster buying is a strong bullish signal.
• Form 144: Planned insider sales — an early warning of selling pressure.
• Context: Selling to cover taxes is different from dumping an entire position. Read the footnotes.

Use the SEC Insider Tracker to search penny stock insider filings.

Assess Dilution Risk

Dilution is the most common way penny stock investors lose money.

Red flags:

• Active S-3 shelf registration — can issue shares at any time
• Variable-rate convertible notes — the lower the stock goes, the more shares the holder gets
• Warrants near exercise price — expect conversion and selling
• Near authorized share ceiling — the board will likely propose an increase
• ATM offering agreement — continuous dilution without announcement

See the Glossary entry on toxic financing.

Evaluate Volume and Liquidity

A great story means nothing if you can't get in or out without moving the price against yourself.

Checklist:

• Average daily volume: Below 50K shares/day = difficult to trade meaningful size
• Bid-ask spread: More than 10-15% of share price = significant entry/exit cost
• Market makers: More = better liquidity
• Volume spikes: Cross-reference with SEC filings and news to determine cause

Check for Promotion Red Flags

Penny stocks are the most heavily promoted securities. If you hear about it through an email blast or social media ad, someone is paying for buying pressure.

Warning signs:

• Paid promotions — search "[ticker] paid promotion" or "disclaimer"
• Caveat Emptor — check OTC Markets for the skull-and-crossbones
• Unrealistic claims without revenue, filings, or real products
• Shell with sudden "business" — verify against SEC filings
• Management with prior SEC/FINRA actions

The golden rule: if someone is paying to tell you about a stock, they own it and want your buying to push the price up.