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EARNINGS (LOSS) PER SHARE (EPS) (Tables) | 12 Months Ended
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Dec. 31, 2018
EARNINGS (LOSS) PER SHARE (EPS) |
Schedule of basic and diluted earnings (loss) per share | Basic
|  | 2018
|  | Common |  | Preferred |  | Total
|  | (in thousands, except share and per share data)
Basic numerator |  |  |  |  |  |
Allocated net income (loss) available to common and preferred shareholders |  | 774,279 |  | 1,529,589 |  | 2,303,868
Basic denominator |  |  |  |  |  |
Weighted-average outstanding shares, after deducting the average tresuary shares |  | 571,929,945 |  | 1,129,851,598 |  |
Earnings per share (in R$) — Basic |  | 1.35 |  | 1.35 |  |
|  | 2017
|  | Common |  | Preferred |  | Total
|  | (in thousands, except share and per share data)
Basic numerator |  |  |  |  |  |
Allocated net income (loss) available to common and preferred shareholders |  | (120,267) |  | (239,093) |  | (359,360)
Basic denominator |  |  |  |  |  |
Weighted-average outstanding shares, after deducting the average tresuary shares |  | 571,929,945 |  | 1,137,012,265 |  |
Loss per share (in R$) — Basic |  | (0.21) |  | (0.21) |  |
|  | 2016
|  | Common |  | Preferred |  | Total
|  | (in thousands, except share and per share data)
Basic numerator |  |  |  |  |  |
Allocated net income (loss) available to common and preferred shareholders |  | (969,954) |  | (1,920,857) |  | (2,890,811)
Basic denominator |  |  |  |  |  |
Weighted-average outstanding shares, after deducting the average tresuary shares |  | 571,929,945 |  | 1,132,626,373 |  |
Loss per share (in R$) — Basic |  | (1.70) |  | (1.70) |  |
Diluted
Diluted numerator |  | 2018
Allocated net income available to Common and Preferred shareholders |  |
Net income allocated to preferred shareholders |  | 1,529,589
Add: |  |
Adjustment to net income allocated to preferred shareholders in respect to the potential increase in number of preferred shares outstanding, as a result of options granted to acquire stock of Gerdau. |  | 6,515
|  | 1,536,104
Net income allocated to common shareholders |  | 774,279
Less: |  |
Adjustment to net income allocated to preferred shareholders in respect to the potential increase in number of preferred shares outstanding, as a result of options granted to acquire stock of Gerdau. |  | (6,515)
|  | 767,764
Diluted denominator |  |
Weighted - average number of shares outstanding |  |
Common Shares |  | 571,929,945
Preferred Shares |  |
Weighted-average number of preferred shares outstanding |  | 1,129,851,598
Potential increase in number of preferred shares outstanding in respect of stock option plan |  | 14,440,860
Total |  | 1,144,292,458
Earnings per share — Diluted (Common and Preferred Shares) |  | 1.34

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