Super Micro Computer stock surges after the server maker submits a plan to allow it to continue to trade on the Nasdaq, Walmart tops earnings estimates, and investors are looking to Nvidia’s earnings to serve as the next big catalyst.

Stocks were mixed on Tuesday after trading lower earlier in the session on pressure from Russia’s move to update its nuclear doctrine. The move lowered Russia’s threshold for using nuclear weapons.These stocks made moves Tuesday:Super Micro Computer surged 31% after the server maker late Monday appointed an independent auditor and submitted a plan with Nasdaq that it believes supports its request for an extension of time to regain compliance with Nasdaq listing requirements.

The company still faces many unknowns, but an analyst expects Nasdaq approval for Super Micro’s filing plan in two to five weeks.