Because ERBB is a "penny stock" (trading at ~$0.0002–$0.0003), it often has low liquidity and wide .
To buy stock, you must use a brokerage that supports Over-the-Counter (OTC) trading, as it is not listed on major exchanges like the NYSE or NASDAQ. How to Buy ERBB Stock Open a Brokerage Account how to buy erbb stock
Some "lite" apps like Public or Robinhood may list the ticker, but availability for penny stocks can vary based on clearing requirements. Transfer cash from your bank via ACH or wire transfer. Because ERBB is a "penny stock" (trading at ~$0
Popular options include Fidelity, Charles Schwab, or Interactive Brokers . or Interactive Brokers .