| VARIABLES | (1) | (2) | (3) | (4) | (5) | (6) | (7) | 
| ROE | ROE | ROE | ROE | ROE | ROE | ROE | |
| did | 0.399 | 0.520** | 1.006*** | 0.680*** | 0.581*** | 0.618*** | 0.540** | 
| (1.59) | (2.08) | (4.22) | (2.96) | (2.61) | (2.79) | (2.44) | |
| Size | 
 | 1.104*** | 2.972*** | 2.490*** | 2.336*** | 2.207*** | 2.314*** | 
| 
 | (11.61) | (28.95) | (24.95) | (24.13) | (22.86) | (23.27) | |
| Lev | 
 | 
 | −25.809*** | −21.698*** | −22.138*** | −21.600*** | −21.460*** | 
| 
 | 
 | (−38.82) | (−33.33) | (−35.09) | (−34.41) | (−34.17) | |
| Cashflow | 
 | 
 | 
 | 55.306*** | 53.011*** | 51.398*** | 51.190*** | 
| 
 | 
 | 
 | (34.62) | (34.21) | (33.31) | (33.18) | |
| Growth | 
 | 
 | 
 | 
 | 7.745*** | 7.765*** | 7.676*** | 
| 
 | 
 | 
 | 
 | (31.46) | (31.76) | (31.31) | |
| Top1 | 
 | 
 | 
 | 
 | 
 | 10.162*** | 10.698*** | 
| 
 | 
 | 
 | 
 | 
 | (14.53) | (15.08) | |
| SOE | 
 | 
 | 
 | 
 | 
 | 
 | −1.191*** | 
| 
 | 
 | 
 | 
 | 
 | 
 | (−4.44) | |
| Constant | 6.831*** | −17.724*** | −49.024*** | −42.645*** | −40.322*** | −41.028*** | −43.289*** | 
| (47.72) | (−8.36) | (−22.53) | (−20.28) | (−19.77) | (−20.25) | (−20.74) | |
| Observations | 15,243 | 15,243 | 15,243 | 15,243 | 15,243 | 15,243 | 15,243 | 
| R-squared | 0.034 | 0.042 | 0.129 | 0.193 | 0.242 | 0.253 | 0.254 | 
| industry | YES | YES | YES | YES | YES | YES | YES | 
| year | YES | YES | YES | YES | YES | YES | YES | 
| F | 2.532 | 68.70 | 552.6 | 746.8 | 834.4 | 740.2 | 638 |