On today’s episode of the Zacks Friday Finish Line podcast, Content Writer Ryan McQueeney and Editor Maddy Johnson take on this week’s biggest news from the investment and financial world. The hosts discussa look at a major shakeup in the private prison industry, how health insurers like Aetna are finding it difficult to turn profits on the Obamacare exchanges, another busy week for Uber, and both Target's and Walmart's quarterly earnings results.