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We describe two observations of the nova-like cataclysmic variable AC Cncobtained with {\it Kepler} during its revamped second mission ({\it K2}). Usingthe {\it K2} 1-minute cadence mode, the data were obtained during Campaigns 5and 18. Campaign 5 (C05) lasted from ${\sim}$2015 Apr 27 to ${\sim}$2015 July10, a total of 74.8 days, and yielded ${\sim}$106,000 measurements. Campaign 18(C18) lasted from ${\sim}$2018 May 13 to ${\sim}$2018 July 2, a total of 50.7days, yielding $\sim$72,000 measurements. The C05 light curve reveals two`stunted outbursts' having properties consistent with stunted bursts observedfrom the ground; a stunted burst was underway during the C18 observation whenit ended. During a stunted outburst, the primary eclipse is found to increasein depth but the residual brightness at mid-primary-eclipse remains nearlyconstant. By contrast, the secondary eclipse retains the same depth but thebrightness at mid-secondary eclipse increases during outburst, following theorbital variations of the out-of-eclipse light. The eclipse ephemeris isstatistically consistent with historical ephemerides and shows only marginalevidence for a period change. On the basis of the {\it K2} data, we can notconfirm a previously-reported non-orbital periodicity in AC~Cnc.

The {\it K2} Light Curves and Stunted Outbursts of AC Cnc