2014 has seen a major overhaul in the health insurance landscape. The launch of the Affordable Care Act has fundamentally shifted the competitive environment of top health insurers, but perhaps no change has meant as much as the expansion of Medicaid. This shift has helped subscriber enrollment and premium revenue grow at savvy health insurers looking to capitalize on Obamacare's launch -- and three health insurers in particular have made the most for investors this year.

Molina Healthcare (NYSE:MOH) has certainly embraced Obamacare as a grand opportunity. The company operates heavily in the California market, and the rollout of the Golden State's Medicaid expansion has provided a huge boon to investors with Molina's big run-up year to date. Yet Molina -- and the other big gainers of the year in this industry -- may not be done yet.

Can Molina and the rest of this industry's best risers in 2014 continue delivering for investors in the future? Find out in the video below, as Motley Fool contributor Dan Carroll takes you through the stocks that have delivered a windfall to investors with Obamacare's passage -- and how investors can gain the most behind Obamacare's long-term outlook.

Will this stock be your next multi-bagger?
Give us five minutes, and we'll show how you could own the best stock for 2014. Every year, The Motley Fool's chief investment officer hand-picks one stock with outstanding potential. But it's not just any run-of-the-mill company. It's a stock perfectly positioned to cash in on one of the upcoming year's most lucrative trends. Last year, his pick skyrocketed 134%. And previous top picks have gained upwards of 908%, 1,252%, and 1,303% over the subsequent years! Believe me, you don't want to miss what could be his biggest winner yet! Just click here to download your free copy of "The Motley Fool's Top Stock for 2014" today.

Dan Carroll has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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