The firm said it raised its rating on the company which, gathers, processes, stores, and transports natural gas in the U.S., based on a valuation call.
Credit Suisse also cited the company's relative total return potential as another reason for the ratings upgrade, the flyonthewall.com reports.
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Credit Suisse has a $61 price target on Oneok Partners' stock.
Shares of Oneok Partners are higher by 1.27% to $48.67 at the start of trading on Tuesday morning.
Separately, TheStreet Ratings team rates ONEOK PARTNERS -LP as a Hold with a ratings score of C+. TheStreet Ratings Team has this to say about their recommendation:
"We rate ONEOK PARTNERS -LP (OKS) a HOLD. The primary factors that have impacted our rating are mixed some indicating strength, some showing weaknesses, with little evidence to justify the expectation of either a positive or negative performance for this stock relative to most other stocks. The company's strengths can be seen in multiple areas, such as its reasonable valuation levels and good cash flow from operations. However, as a counter to these strengths, we also find weaknesses including unimpressive growth in net income, generally higher debt management risk and disappointing return on equity."