Challenges are piling up for the electric-vehicle maker and CEO Elon Musk, but the company’s legion of individual investors are staying put.

Tesla stock edged into the red Thursday, one day after gaining 5% following the company’s second-quarter delivery report. Shares of Tesla were up most of the shortened pre-July 4 holiday trading session,

Tesla ( TSLA 0.04%) is one of the world's leading electric vehicle (EV) manufacturers, but many analysts believe the company's true value lies in its futuristic product platforms like the autonomous robotaxi and Optimus humanoid robot. In fact, CEO Elon Musk believes those products will make Tesla the largest company in the world one day.

Tesla Inc. is in a sales slump, with deliveries of its electric vehicles on track to decline for the second full year in a row.