Based on the aggregated intelligence of 135,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, Delta Air Lines (NYSE:DAL) has received the dreaded one-star ranking.

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

Delta facts

Headquarters (founded)

Atlanta, Ga. (1924)

Market Cap

$5.29 billion

Industry

Airlines

TTM Revenue

$26.1 billion

Management

CEO Richard Anderson (since 2007)
CFO Hank Halter (since 2008)

Return on Capital (average, last three years)

2.1%

Cash / Debt

$4.9 billion / $16.6 billion

Competitors

AMR (NYSE:AMR)
LAN Airlines (NYSE:LFL)

CAPS members bearish on DAL also bearish on

UAL (NASDAQ:UAUA)
US Airways (NYSE:LCC)

CAPS members bullish on DAL also bullish on

General Electric (NYSE:GE)
Citigroup (NYSE:C)

Sources: Capital IQ, a division of Standard & Poor's, and Motley Fool CAPS. TTM = trailing 12 months.

Over on CAPS, 359 of the 823 members who have rated Delta -- 44% -- believe the stock will underperform the S&P 500 going forward. These bears include ukdaytrader1234 and Swigz.

Late last month, ukdaytrader1234 explained why the stock would likely stay grounded:

Heavy debt. [D]id not make substantial amount even in the good years. Earnings don't justify valuation given the size of its debt. Intangibles relatively high -- may need to be written off to a greater extent.

In a rant from one month earlier, Swigz looks at Delta from a passenger's perspective:

The lines for customer service for people missing connections were almost a football field long at every airport I landed at. They lost my bags and told me they would deliver them that night, but did not deliver it until the next night. ...

I have a hard time believing that an airline with constant delays and terrible customer service has too good of a future. Now I know this pitch has nothing to do about the numbers, but I believe if you want to know about the future of a company you should go and actually see the company in action. ... Delta needs to get their act together soon because I am seeing less and less repeat customers. ...

What do you think about Delta, or any other stock for that matter? Make your voice heard on Motley Fool CAPS today. More than 135,000 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.