Based on the aggregated intelligence of 130,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, United Airlines parent UAL (NASDAQ:UAUA) has received the dreaded one-star ranking.

With that in mind, let's take a closer look at UAL's business and see what CAPS investors are saying about the stock right now.

UAL facts

Headquarters (founded)

Chicago, Ill. (1934)

Market Cap

$923.74 million

Industry

Major Airlines

Trailing-12-Month Revenue

$20.19 billion

Management

CEO Glenn Tilton (since 2002)

CFO Kathryn Mikells (since 2008)

Return on Assets (average, last five years)

(0.9%)

Competitors

AMR (NYSE:AMR)

Delta Air Lines (NYSE:DAL)

CAPS members bearish on UAUA also bearish on

Continental Airlines (NYSE:CAL)

General Motors (NYSE:GM)

CAPS members bullish on UAUA also bullish on

US Airways (NYSE:LCC)

General Electric (NYSE:GE)

Sources: Capital IQ, a division of Standard & Poor's, and Motley Fool CAPS.

Over on CAPS, 118 of the 196 members who have rated UAL -- some 60% -- believe the stock will underperform the S&P 500 going forward. These bears include danteps and MFBriguy, both of whom are ranked in the top 1% of our community.

Earlier this month, danteps noted that UAL "has a book value per share of approximately negative $18. For all intents and purposes this is a bankrupt company that is trading completely on option value." Our CAPS member concludes: "Unless there is a miraculous turn in the economy, United Airlines will be forced into yet another restructuring that wipes out equity holders."

In a more recent pitch, MFBriguy tapped Tuesday's double-digit price jump (triggered by a narrower quarterly loss) as a small window for shareholders to abort:

The economics of this industry are lousy, with high fixed costs, low margins, poor labor relations and high debt. UAL also tends to be very sensitive to the price of oil, which has far more upside potential than downside from this point. I view today's stock price spike as a good entry point for a thumbs-down.

What do you think about UAL, or any other stock for that matter? Make your voice heard on Motley Fool CAPS today. More than 130,000 investors are waiting to hear what you have to say. CAPS is 100% free, so simply click here to get started.

Fool contributor Brian Pacampara owns no position in any of the companies mentioned. The Fool's disclosure policy always gets a perfect score.