Comcast has just made official the agreement rumored last night: it is acquiring Time Warner Cable in a multibillion-dollar deal. Officially presented as a merger between the two US cable giants, the agreement will see Comcast absorbing 100 percent of TWC in a $45.2 billion all-stock transaction. As a result, current Time Warner Cable shareholders will find themselves owning roughly 23 percent of Comcasts common stock. Monopoly concerns immediately rise to the fore with a merger of this scale, which Comcast will try to allay by making divestitures.