NEW YORK (

TheStreet

) -- Telecommunications company

MetroPCS

(PCS)

was the worst-performing stock in the

S&P 500

midday Monday.

The S&P was down 7.86 points to 1,361.77.

Shares of MetroPCS declined 5.87% to $9.94.

The stock was downgraded to market perform from outperform at

Bernstein

on Monday.

MetroPCS has an estimated price-to-earnings ratio for next year of 9.19 times; the average for mobile telecommunications companies is 18.76. For comparison, both

Iridium Communications

(IRDM) - Get Report

and

American Tower

(AMT) - Get Report

have higher forward P/Es of 10.22 and 31.98.

Seventeen of the 30 analysts who cover MetroPCS rated it hold. Twelve analysts gave the stock a buy rating and one rated it sell.

TheStreet Ratings

gives MetroPCS a B- grade with a buy rating and

$12.55

price target. The stock has risen 14.4% year to date.

-- Written by Alexandra Zendrian

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