Boeing Lockheed Northrop Raytheon Martin Grumman Percentage of revenues derived from government (defense and space) 46%...

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Boeing Lockheed Northrop Raytheon Martin Grumman Percentage of revenues derived from government (defense and space) 46% 93% 91% 73% Estimated betas 1. Value Line 1.05 0.60 0.70 0.80 2. Calculated against the S&P 500 index: 2 60 months 0.80 0.36 0.34 0.43 21 months 1.03 0.38 0.31 0.46 60 trading days 1.45 0.34 0.27 0.66 3. Calculated against the NYSE composite index: 2 60 months 1.00 0.49 0.44 0.59 21 months 1.17 0.44 0.36 0.53 60 trading days 1.62 0.37 0.30 0.73 Effective marginal tax rate 0.35 0.35 0.35 0.35 Market-value debt/equity ratios 0.525 0.410 0.640 0.624 Boeing Lockheed Northrop Raytheon Martin Grumman Percentage of revenues derived from government (defense and space) 46% 93% 91% 73% Estimated betas 1. Value Line 1.05 0.60 0.70 0.80 2. Calculated against the S&P 500 index: 2 60 months 0.80 0.36 0.34 0.43 21 months 1.03 0.38 0.31 0.46 60 trading days 1.45 0.34 0.27 0.66 3. Calculated against the NYSE composite index: 2 60 months 1.00 0.49 0.44 0.59 21 months 1.17 0.44 0.36 0.53 60 trading days 1.62 0.37 0.30 0.73 Effective marginal tax rate 0.35 0.35 0.35 0.35 Market-value debt/equity ratios 0.525 0.410 0.640 0.624