The company's Q3 earnings beat estimates but "it remains too early to call for a broad recovery" in the medical-device and consumer businesses.
The bank's third-quarter results "reflect the transformational changes we've been making at Wells Fargo," CEO Tim Sloan says.
The warning related to IT systems that "support the company’s financial reporting processes" drove Costco's stock down 2.4%.
"This market has no patience for any misses from tech companies, no matter how minor or how explainable the miss."
The speaker maker's Q3 revenue fell 6% but its CEO says it is "focused on driving sustainable, profitable growth for the long-term."
The retailer believes it can still "leverage our industry-leading position to drive growth in the second half" of the year.
The company reports "significant progress" in its integration of Adaptive Insights, although acquisition costs hit margins in Q2.
The discount retailer's shares fell more than 15% after its earnings came in one cent below analysts' estimates.
The third-quarter report “hardly puts to rest the long-term growth concerns that have swirled around the IT hardware giant for some time."
With CEO Musk now abandoning the idea of taking Tesla private, some analysts are questioning his credibility.