5 of Last Week's Biggest Winners

What's better than momentum? Mo' momentum. Let's take a closer look at five of this past week's biggest scorchers.

Source: Barron's.

Let's start with Men's Wearhouse.

The suit retailer soared after receiving an unsolicited $2.3 billion buyout bid. Men's Wearhouse's board turned down the offer, but investors know you can't shake a takeover bid at a reasonable premium so easily. This doesn't end here. Whether Men's Wearhouse can secure a sweetened buyout offer or activist investors shoo out the board if they can't get the stock back up to the $48-per-share takeout price organically, this story's just getting started.

SolarCity climbed after making a $158 million acquisition of a solar-racking maker, but the real boost came later in the week, when it offered up encouraging operating metrics and boosted its outlook for next year.

After deploying 78 megawatts of solar-power products during the third quarter, SolarCity's on track to meet its earlier guidance calling for 278 megawatts. Now looking out to 2014, SolarCity is targeting deployments of between 475 megawatts and 525 megawatts, representing growth of as much as 89% over this year.

Southcross Energy Partners was gushing after announcing that a new lateral pipeline that would extend its McMullen County, Texas, system further into the Eagle Ford shale region -- boosting the amount of gas to its processing and fractionation complex -- will be completed this month. It will be in operation starting next month.

ExOne moved higher after an analyst upgrade. FBR Capital Markets thinks ExOne -- while naturally still early in its growth cycle as a 3-D printing play -- could cash in on the automotive industry as companies move to the mass production of on-demand parts. The analyst is reiterating his $75 price target and bullish "outperform" rating, comfortable with ExOne generating organic revenue growth of 40% to 50% for the next few years.

Finally, we have ReneSola shining brightly. It was a good week for solar energy stocks in general, but ReneSola's move was enhanced when Zacks Investment Research upgraded the stock to its highest "Zacks Rank #1 (Strong Buy)" rating.