Shares of Salesforce.com Inc.  (CRM)  were sliding 0.8% to $92.20 in after-hours trading on Tuesday, Aug. 22, even though the software giant beat Wall Street's expectations across the board for the fiscal 2018 second quarter and hiked its full-year guidance. 

Salesforce posted adjusted earnings of 33 cents per share for the quarter ended July 31, which surpassed analysts' projection by a penny. Revenue jumped 26% year over year to $2.56 billion, exceeding the consensus estimate of $2.52 billion. Deferred revenue was $4.82 billion, crushing Wall Street's expected $2.17 billion. 

The company has beat Wall Street's expectations for 10 straight quarters since January 2015, but that did little to prevent Salesforce's stock from falling. Investors' expectations were running high ahead of the second-quarter results, which may have pushed shares lower after hours on Tuesday. 

Salesforce also raised its forecast for full-year 2018, saying it now expects to report adjusted earnings per share between $1.29 and $1.31, in line with analysts' estimated $1.30 per share. Revenue is projected to rise 23% to 24% year over year, in the range of $10.35 billion to $10.4 billion. Wall Street is looking for sales of $10.29 billion for the year. 

Analysts were expecting the company to raise its full-year guidance, helped by billings growth, or money collected from customers. In May, the company forecast billings growth of 16% for the second quarter.

Investors likely will have additional questions about billings on Salesforce's earnings call scheduled for later this evening, as well as its artificial intelligence platform, Einstein, and the health of Service Cloud, its customer relationship management business. Another key focus will be the Commerce Cloud, which Salesforce rolled out as a result of its $2.8 billion acquisition of Demandware Inc. last July. The e-commerce software has its own set of competitors, however, including Oracle Corp. (ORCL) and Adobe Systems Inc. (ADBE) . 

Some of those questions are more likely to be answered at Salesforce's annual Dreamforce conference, which is scheduled for November and usually involves some major product updates and announcements.

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