: Features $0 commissions on many penny stocks and a community-driven interface.

: Commission-free for listed stocks, but may charge $6.95 for certain OTC trades. E*TRADE

: Provides extensive educational resources and research tools like the thinkorswim platform.

: Uses a tiered per-share model (starting at $0.0035/share) which can be cheaper for large, frequent trades. Webull

: Requires a standard brokerage account; Youth or Cash Management accounts are ineligible for penny stock trading. Charles Schwab

: Offers $0 commissions on OTC and penny stock trades.