Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Yelp Inc (NYSE:YELP) are trading roughly 13% higher today after news broke that would acquire  OpenTable (UNKNOWN:OPEN.DL) for $2.6 billion.

So what: This news seems to have little bearing on Yelp itself at first glance. Shares of OpenTable have leapt nearly 50% from yesterday's close, but there has been no such buyout chatter swirling around Yelp recently. Even after the buyout, OpenTable is still valued at less than half Yelp's market cap, which would also indicate a smaller pool of potential buyers.

Now what: Yelp and OpenTable have complementary business models -- Yelp helps users find, assess, and rate local businesses, while OpenTable is focused on booking dining reservations for users -- but they are not so similar that an acquisition of one company should lead to a bidding frenzy for the other. Yelp has also been on a tear over the past year -- even with the buyout's near-50% pop in its favor, OpenTable is still a full 100% behind Yelp's 150% gain for the past 12 months. Yelp has also been growing faster on the top line, although it's never posted positive EPS, unlike OpenTable, which has been profitable for years.

Yelp was no bargain before this deal, and it looks even more overvalued now when you compare its valuation ratios  to OpenTable's:

Valuation Ratio



Price to Sales



Forward Price to Earnings



Price to Free Cash Flow



Source: YCharts. All valuations current following acquisition news.

Does this look like a screaming buy? It sure doesn't to me. I'd keep my distance until Yelp comes back to earth.