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 Dow Down 1.14% Nasdaq Down 1.34%
American Tower Corp. (AMT)At 4:01PM EST: 60.07  Down 0.63 (1.04%)  

Key StatisticsGet Key Statistics for:
Data provided by Capital IQ, except where noted.
Valuation Measures 
Market Cap (intraday)5:23.61B
Enterprise Value (Dec 29, 2011)3:29.51B
Trailing P/E (ttm, intraday):87.06
Forward P/E (fye Dec 31, 2012)1:42.60
PEG Ratio (5 yr expected)1:3.35
Price/Sales (ttm):10.20
Price/Book (mrq):7.32
Enterprise Value/Revenue (ttm)3:12.62
Enterprise Value/EBITDA (ttm)6:20.90
Financial Highlights 
Fiscal Year
Fiscal Year Ends:Dec 31
Most Recent Quarter (mrq):Sep 30, 2011
Profitability
Profit Margin (ttm):11.76%
Operating Margin (ttm):37.46%
Management Effectiveness
Return on Assets (ttm):5.38%
Return on Equity (ttm):7.91%
Income Statement
Revenue (ttm):2.34B
Revenue Per Share (ttm):5.89
Qtrly Revenue Growth (yoy):22.80%
Gross Profit (ttm):1.51B
EBITDA (ttm)6:1.41B
Net Income Avl to Common (ttm):274.87M
Diluted EPS (ttm):0.69
Qtrly Earnings Growth (yoy):N/A
Balance Sheet
Total Cash (mrq):182.23M
Total Cash Per Share (mrq):0.46
Total Debt (mrq):5.83B
Total Debt/Equity (mrq):174.20
Current Ratio (mrq):0.59
Book Value Per Share (mrq):8.29
Cash Flow Statement
Operating Cash Flow (ttm):1.10B
Levered Free Cash Flow (ttm):412.65M
View Financials
Income Statement - Balance Sheet - Cash Flow

Trading Information 
Stock Price History
Beta:0.26
52-Week Change3:16.71%
S&P500 52-Week Change3:-0.66%
52-Week High (Dec 27, 2011)3:60.82
52-Week Low (Mar 21, 2011)3:45.85
50-Day Moving Average3:58.13
200-Day Moving Average3:54.36
Share Statistics
Avg Vol (3 month)3:3,057,550
Avg Vol (10 day)3:2,699,440
Shares Outstanding5:393.02M
Float:392.82M
% Held by Insiders1:1.00%
% Held by Institutions1:95.10%
Shares Short (as of Nov 30, 2011)3:6.06M
Short Ratio (as of Nov 30, 2011)3:2.10
Short % of Float (as of Nov 30, 2011)3:1.50%
Shares Short (prior month)3:6.10M
Dividends & Splits
Forward Annual Dividend Rate4:N/A
Forward Annual Dividend Yield4:N/A
Trailing Annual Dividend Yield3:N/A
Trailing Annual Dividend Yield3:N/A
5 Year Average Dividend Yield4:N/A
Payout Ratio4:N/A
Dividend Date3:Dec 22, 2011
Ex-Dividend Date4:Dec 8, 2011
Last Split Factor (new per old)2:N/A
Last Split Date3:N/A

See Key Statistics Help for definitions of terms used.
Abbreviation Guide: K = Thousands; M = Millions; B = Billions
mrq = Most Recent Quarter (as of Sep 30, 2011)
ttm = Trailing Twelve Months (as of Sep 30, 2011)
yoy = Year Over Year (as of Sep 30, 2011)
lfy = Last Fiscal Year (as of Dec 31, 2010)
fye = Fiscal Year Ending
1 Data provided by Thomson Reuters
2 Data provided by EDGAR Online
3 Data derived from multiple sources or calculated by Yahoo! Finance
4 Data provided by Morningstar, Inc.
5 Shares outstanding is taken from the most recently filed quarterly or annual report and Market Cap is calculated using shares outstanding.
6 EBITDA is calculated by Capital IQ using methodology that may differ from that used by a company in its reporting

Currency in USD.