Stocks spike and sink in volatile after-hours trading following quarterly earnings reports

Nordstrom and Chewy shares jumped after beating sales and earnings expectations for the quarter while lowering full-year guidance.
Salesforce and CrowdStrike shares dropped despite surpassing quarterly estimates and raising full-year earnings guidance, citing macroeconomic pressures.
Macy's missed revenue estimates and cut its full-year outlook, sending shares tumbling.
Dollar General shares fell nearly 20% after reporting an earnings and revenue miss for the quarter and slashing its full-year outlook.
NetApp and Pure Storage shares rose after beating earnings and revenue expectations for the quarter.