The following video is from Monday's Investor Beat, in which host Chris Hill and Motley Fool analysts Jason Moser and Taylor Muckerman take on the hardest-hitting investing stories of the day.

As Twitter prepares for its initial public offering on Thursday, CEO Dick Costolo and his team have now raised the IPO price range, from $17-$20 per share to $23-$25 per share. The upper end of that range would value Twitter as a company worth more than $13 billion. In the lead story on today's Investor Beat, Jason and Taylor discuss what Twitter would have to do to live up to that valuation, and whether they're interested in buying when the company goes public Thursday.

Then the guys take a look at four stocks making moves on the market today. SolarCity hit a new 52-week high ahead of Wednesday's earnings report, on news that it has offered $54 million worth of asset-backed notes. Shares of Kellogg pulled up a bit today, with the company's third-quarter earnings not receiving nearly as much attention as its decision to reduce its global workforce over the next four years. Linn Energy was up after increasing its offer to buy Berry Petroleum from $4.3 billion to $4.9 billion. And Proto Labs recovered today after falling by double digits on the company's earnings report.

And finally, Jason and Taylor discuss why they'll be watching shares of Mosaic and Hain Celestial as they report earnings this week.

Chris Hill owns shares of Whole Foods Market. Jason Moser and Taylor Muckerman have no position in any stocks mentioned. The Motley Fool recommends and owns shares of Facebook, Hain Celestial, Proto Labs, SolarCity, and Whole Foods Market. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.