NEW YORK (TheStreet) -- Williams Cos. (WMB) - Get Report stock is slumping by 4.57% to $15.87 in late-afternoon trading on Thursday, after both Energy Transfer Partners (ETP) and its general partner Energy Transfer Equity (ETE) reported weaker-than-expected earnings. 

Williams Cos. has agreed to be acquired by Energy Transfer Equity in a deal valued at $32.6 billion.

After yesterday's market close, Energy Transfer Equity reported 2015 fourth quarter earnings of 30 cents per unit on revenue of $9.54 billion. Analysts surveyed by Thomson Reuters were expecting earnings of 36 cents per unit on revenue of $13.04 billion.

Energy Transfer Partners posted a loss of 68 cents per unit on revenue of $5.83 billion for the quarter. Analysts surveyed by Thomson Reuters were looking for a per-unit profit of 43 cents on revenue of $8.95 billion.

Williams Cos. is natural gas processing and transportation company based in Tulsa, OK.

Separately, TheStreet Ratings team rates the stock as a "hold" with a ratings score of C.

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Williams Cos.' strengths such as its reasonable valuation levels, good cash flow from operations and expanding profit margins are countered by weaknesses including a generally disappointing performance in the stock itself, deteriorating net income and generally higher debt management risk.

You can view the full analysis from the report here: WMB

TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this article's author. 

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