Key Financial Ratios 2Q 18/19 1Q 18/19 4Q 17/18 3Q 17/18 2Q 17/18
Profitability ratios
Gross operating profit margin (%) 11.5% 48.2% 46.2% 31.8% 50.9%
Operating EBITDA margin (%) 8.9% 37.0% 32.3% 23.5% 34.4%
Recurring net profit margin (%) 5.1% 15.2% 19.6% 17.1% 13.4%
Net profit margin (%) 4.1% 11.6% 41.1% 16.3% 21.0%
ROA (%) 4.4% 4.6% 4.8% 2.7% 2.5%
ROE (%) 10.3% 10.1% 10.5% 5.7% 4.7%
Liquidity Ratio          
Current Ratio (times) 0.88x 0.95x 0.93x 1.13x 0.91x
Leverage          
Interest bearing debt to equity (times) 1.15x 1.02x 1.02x 1.07x 0.97x
Adjusted net debt1 to equity (times) 0.56x 0.39x 0.37x 0.34x 0.30x
Adjusted net debt1 to recurring EBITDA (times) 4.38x 3.23x 3.02x 3.14x 3.36x
Interest coverage (times) 3.52x 3.58x 3.71x 3.66x 2.75x
Per share ratios 2          
Earnings per share (THB) 0.06 0.03 0.21 0.08 0.06
Book value per share (THB) 4.25 4.10 3.91 3.92 3.88

1 Adjusted net debt: Calculated based on interest bearing debt - cash and cash equivalent and liquid investment - cash to be received from clearing house (share subscription of subsidiary)
2 per share ratios, calculated based on numbers of shares with par value at THB 4 per share

Key Financial Ratios 2017/18 2016/17 2015/16 2014/15+ 2013/14+
Profitability ratios
Gross operating profit margin (%) 41.0% 51.9% 60.4% 55.5% 51.4%
Operating EBITDA margin (%) 29.0% 34.0% 42.9% 39.9% 36.3%
Recurring net profit margin (%) 16.0% 15.4% 29.2% 28.2% 39.0%
Net profit margin (%) 24.6% 20.1% 41.9% 32.6% 52.3%
ROA (%) 4.5% 2.8% 6.7% 5.0% 17.6%
ROE (%) 10.5% 4.9% 8.9% 6.4% 22.7%
Liquidity Ratio
Current Ratio (times) 0.93x 1.38x 0.81x 3.83x 4.36x
Leverage
Interest bearing debt to equity (times) 1.02x 0.85x 0.20x 0.09x 0.11x
Adjusted net debt1 to equity (times) 0.37x 0.13x (0.13)x (0.11)x (0.03)x
Adjusted net debt1 to operating EBITDA (times) 3.02x 1.72x (1.93)x (1.96)x (0.65)x
Interest coverage (times) 3.31x 4.55x 9.30x 8.68x 4.94x
Per share ratios 2
Earnings per share (THB) 0.37 0.17 0.35 0.25 1.08
Book value per share (THB) 3.91 3.82 3.96 4.38 5.09

1 Adjusted net debt: Calculated based on interest bearing debt - cash and cash equivalent and liquid investment - cash to be received from clearing house (share subscription of subsidiary)
2 per share ratios, calculated based on numbers of shares with par value at THB 4 per share