1 Introduction
2 Materials and methods
2.1 Company data and network generation
2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | |
---|---|---|---|---|---|---|---|---|---|---|
Counts | ||||||||||
Nodes (firms) | 3767 | 3849 | 3943 | 3887 | 3767 | 3672 | 3595 | 3543 | 3532 | 3545 |
b. members | 42,175 | 42,635 | 43,121 | 41,998 | 39907 | 38,759 | 37,731 | 36,884 | 36,452 | 36,697 |
Mandates | 45,119 | 45,760 | 46,257 | 44,991 | 42,693 | 41,461 | 40,318 | 39,458 | 39,103 | 39,503 |
Avg. board | 11.98 | 11.89 | 11.73 | 11.57 | 11.33 | 11.29 | 11.22 | 11.14 | 11.07 | 11.14 |
Avg. mandates | 1.070 | 1.073 | 1.073 | 1.071 | 1.070 | 1.070 | 1.069 | 1.070 | 1.073 | 1.076 |
Max mandates | 11 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
Board network | ||||||||||
Edges | 3221 | 3498 | 3415 | 3266 | 3045 | 2956 | 2883 | 2869 | 2984 | 3240 |
Density \(^{-4}\) | 1.135 | 1.181 | 1.098 | 1.081 | 1.073 | 1.096 | 1.116 | 1.143 | 1.197 | 1.291 |
Mean degree | 1.71 | 1.81 | 1.73 | 1.68 | 1.62 | 1.61 | 1.61 | 1.62 | 1.69 | 1.83 |
Max degree | 27 | 27 | 25 | 25 | 26 | 24 | 27 | 26 | 23 | 22 |
Deg. assort. | 0.6693 | 0.6854 | 0.6538 | 0.6543 | 0.6503 | 0.6191 | 0.6363 | 0.6398 | 0.6551 | 0.6620 |
Clustering | 0.1483 | 0.1436 | 0.1333 | 0.1225 | 0.1201 | 0.1142 | 0.1112 | 0.1065 | 0.1061 | 0.1060 |
Local clust. | 0.1581 | 0.1668 | 0.1579 | 0.1542 | 0.1476 | 0.1427 | 0.1431 | 0.1380 | 0.1357 | 0.1475 |
Nodes g.c. | 1408 | 1571 | 1547 | 1495 | 1387 | 1383 | 1373 | 1380 | 1490 | 1625 |
Edges g.c. | 2598 | 2931 | 2800 | 2633 | 2387 | 2343 | 2309 | 2303 | 2490 | 2779 |
Ownership network | ||||||||||
Edges | 2574 | 2695 | 2880 | 2865 | 2918 | 3215 | 3408 | 3467 | 3542 | 3695 |
Density \(^{-5}\) | 4.537 | 4.550 | 4.633 | 4.743 | 5.143 | 5.964 | 6.596 | 6.908 | 7.102 | 7.354 |
Mean degree | 0.683 | 0.700 | 0.730 | 0.737 | 0.775 | 0.876 | 0.948 | 0.979 | 1.003 | 1.042 |
Max degree | 213 | 269 | 340 | 214 | 94 | 262 | 270 | 245 | 205 | 193 |
Deg. assort. \(_{in \leftrightarrow out}\) | 0.3865 | 0.3665 | 0.3264 | 0.3332 | 0.4479 | 0.2749 | 0.2773 | 0.2821 | 0.3001 | 0.2918 |
Clustering | 0.0120 | 0.0118 | 0.0105 | 0.0133 | 0.0162 | 0.0182 | 0.0163 | 0.0158 | 0.0165 | 0.0166 |
Local clust. | 0.0215 | 0.0178 | 0.0178 | 0.0198 | 0.0230 | 0.0320 | 0.0321 | 0.0331 | 0.0333 | 0.0348 |
Clustering \(_{undir.}\) | 0.0582 | 0.0530 | 0.0532 | 0.0593 | 0.0686 | 0.0906 | 0.0905 | 0.0941 | 0.0951 | 0.0965 |
Local clust. \(_{undir.}\) | 0.1581 | 0.1668 | 0.1579 | 0.1542 | 0.1476 | 0.1427 | 0.1431 | 0.1380 | 0.1357 | 0.1475 |
Nodes g.c. | 1488 | 1543 | 1649 | 1632 | 1652 | 1766 | 1826 | 1822 | 1866 | 1948 |
Edges g.c. | 2389 | 2484 | 2678 | 2618 | 2625 | 2925 | 3117 | 3154 | 3223 | 3363 |
2.2 The board network
2.3 Ownership network
3 Dynamics of the board network
3.1 Determinants of board member survival
Year | 2004–2005 | 2005–2006 | 2006–2007 | 2007–2008 | 2008–2009 | 2009–2010 | 2010–2011 | 2011–2012 | 2012–2013 |
---|---|---|---|---|---|---|---|---|---|
MF \(R^2\) | 0.1017 | 0.0837 | 0.1114 | 0.1374 | 0.1409 | 0.1215 | 0.1115 | 0.0977 | 0.0945 |
LR | 3715 | 3355 | 4486 | 5508 | 4828 | 4255 | 3752 | 3066 | 2644 |
N | 42,175 | 42,635 | 43,121 | 41,998 | 39,907 | 38,759 | 37,731 | 36,884 | 36,452 |
Survivors | 35,589 | 34,998 | 35,488 | 34,276 | 33,769 | 32,266 | 31,548 | 31,469 | 31,764 |
Const | 2.2967 | 2.1642 | 2.0330 | 2.0199 | 2.2420 | 2.4157 | 2.5712 | 2.5002 | 2.6905 |
(32.88)* | (32.13)* | (31.20)* | (35.32)* | (36.01)* | (39.09)* | (41.24)* | (38.93)* | (36.45)* | |
Firm delist | \(-5.2928\) | \(-4.8940\) | \(-5.1347\) | \(-5.4018\) | \(-5.5817\) | \(-5.6135\) | \(-5.7194 \) | \(-5.5151\) | \(-5.81\) |
(\(-29.67\))* | (\(-28.32\))* | (\(-32.89\))* | (\(-34.17\))* | (\(-32.15\))* | (\(-28.49\))* | (\(-26.72\))* | (\(-25.06\))* | (\(-22.33\))* | |
\(log(mand_{t-1})\) | 0.6310 | 0.7667 | 0.6526 | 0.7512 | 0.7256 | 0.7871 | 0.7669 | 0.8579 | 0.9217 |
(11.49)* | (14.88)* | ( 12.77)* | (13.52)* | (11.97)* | (13.56)* | (13.10)* | (13.00)* | (12.61)* | |
Age | 0.0003 | \(-0.0384\) | 0.0005 | 0.0002 | \(-0.0265\) | \(-0.0380\) | \(-0.0399\) | \(-0.0337\) | \(-0.0342\) |
(1.89)\(^\cdot \) | (\(-23.03\))* | (3.81)* | (1.67)\(^\cdot \) | ( \(-13.41\))* | (\(-19.64\))* | (\(-20.13\))* | (\(-16.36\))* | (\(-15.74\))* | |
Female | 0.3258 | \( -0.1044\) | 0.0976 | 0.0985 | 0.1064 | 0.5485 | 0.3231 | 0.4690 | 0.7197 |
(2.05)\(^:\) | (\(-0.82\)) | (0.76) | (0.76) | (0.7040) | (3.27)* | (2.11)\(^:\) | (2.88)* | (3.95)* | |
\(log(mv_t)\) | \(-0.0398\) | \(-0.0243\) | \(-0.0178\) | \(-0.0158\) | \(-0.0033\) | \(-0.0295\) | \(-0.0462\) | \( -0.0299\) | \(-0.0328\) |
(\(-6.08\))* | (\(-3.80\))* | (\(-2.91\))* | (\(-2.97\))* | (\(-0.54\)) | (\(-4.94\))* | (\(-7.77\))* | (\(-4.82\))* | (\(-4.74\))* | |
\(log(\frac{mv_t}{mv_{t-1}})\) | 0.0296 | 0.2038 | 0.1113 | 0.1664 | 0.2928 | 0.1342 | 0.0551 | 0.3680 | -0.0442 |
(0.57) | (4.66)* | (2.57)\(^:\) | (3.39)* | (5.24)* | (2.29)\(^:\) | (0.88) | (5.74)* | (-0.70) | |
Outs. board | \(-0.4605\) | \(-0.4930\) | \(-0.3724\) | \(-0.5409\) | \(-0.4528\) | \(-0.2972\) | \(-0.1387\) | \(-0.3615\) | \(-0.3318\) |
(\(-6.89\))* | (\(-8.21\))* | (\(-6.08\))* | (\(-9.41\))* | (\(-7.28\))* | (\(-4.75\))* | (\(-2.19\))\(^:\) | (\(-6.01\))* | (\(-5.39\))* | |
Outs. audit | 0.3002 | 0.0943 | \(-0.0630\) | 0.3281 | 0.3492 | 0.0698 | 0.0794 | 0.2925 | 0.3532 |
(7.03)* | (2.58)* | (\(-1.75\))\(^\cdot \) | (8.24)* | (8.00)* | (2.28)\(^\cdot \) | (1.99)\(^:\) | (6.68)* | (7.46)* |
3.2 Tie survival
2004–2005 | 2005–2006 | 2006–2007 | 2007–2008 | 2008–2009 | 2009–2010 | 2010–2011 | 2011–2012 | 2012–2013 | |
---|---|---|---|---|---|---|---|---|---|
Links\(_{t-1}\) | 3221 | 3498 | 3415 | 3266 | 3045 | 2956 | 2883 | 2869 | 2984 |
firms alive\(_t\) | 3207 | 3491 | 3405 | 3260 | 3035 | 2949 | 2879 | 2867 | 2978 |
links alive\(_t\) | 2499 | 2569 | 2530 | 2519 | 2373 | 2272 | 2281 | 2343 | 2487 |
in % | 77.58 | 73.44 | 74.08 | 77.13 | 77.93 | 76.86 | 79.12 | 81.67 | 83.34 |
Same b. member | 2,376 | 2,423 | 2,398 | 2,401 | 2,259 | 2,176 | 2,184 | 2,250 | 2,399 |
in % | 73.77 | 69.27 | 70.22 | 73.52 | 74.19 | 73.61 | 75.75 | 78.42 | 80.40 |
New b. member | 123 | 146 | 132 | 118 | 114 | 96 | 97 | 93 | 88 |
in % | 3.82 | 4.17 | 3.87 | 3.61 | 3.74 | 3.25 | 3.36 | 3.24 | 2.95 |
Reconstituted % | 14.80 | 13.67 | 13.11 | 13.74 | 14.70 | 12.42 | 13.96 | 15.07 | 15.20 |
Mand\(_{t-1}\) | 2.94 | 2.91 | 2.58 | 2.70 | 3.00 | 2.69 | 2.65 | 2.70 | 2.72 |
Former b. member | 68 | 79 | 83 | 67 | 58 | 63 | 49 | 63 | 54 |
in % | 55.28 | 54.11 | 62.88 | 56.78 | 50.88 | 65.63 | 50.52 | 67.74 | 61.36 |
4 Structure of the board network
Year | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
---|---|---|---|---|---|---|---|---|---|---|
AIC | 27,917 | 32,314 | 31,184 | 29,415 | 26,473 | 26,328 | 26,117 | 26,215 | 28,967 | 32,486 |
N | 990,528 | 1,233,235 | 1,195,831 | 1,116,765 | 961,191 | 955,653 | 941,878 | 951,510 | 1,109,305 | 1,319,500 |
Links | 2598 | 2931 | 2800 | 2633 | 2387 | 2343 | 2309 | 2303 | 2490 | 2779 |
Edges | \(-7.5566\) | \(-7.6867\) | \(-7.5892\) | \(-7.5046\) | \(-7.3983\) | 7.3331 | \(-7.2922\) | \(-7.2787 \) | \(-7.2989\) | \(-7.4142\) |
(\(-186.01\)) | (\(-209.71\)) | (\(-201.69\)) | (\(-197.92\)) | (\(-195.79\)) | (\(-193.53\)) | (\(-196.39\)) | (\(-193.13\)) | (\(-208.80\)) | (\(-215.65\)) | |
b size | 0.1007 | 0.1469 | 0.1336 | 0.1443 | 0.1461 | 0.1398 | 0.1704 | 0.1609 | 0.1640 | 0.1766 |
(14.20) | (23.52) | (20.78) | (22.97) | (30.61) | (16.23) | (23.39) | (18.09) | (17.10) | (25.85) | |
Fin lk | 0.1821 | 0.1632 | 0.1373 | 0.1870 | 0.2237 | 0.2579 | 0.1872 | 0.2246 | 0.1939 | 0.1916 |
(4.79) | (4.65) | (3.54) | (4.52) | (5.08) | (5.78) | (4.30) | (4.93) | (4.71) | (4.46) | |
Same sec | 1.1425 | 1.0636 | 0.9823 | 0.9362 | 0.9890 | 0.9567 | 0.8453 | 0.9188 | 0.8644 | 0.8521 |
(32.46) | (31.28) | (24.99) | (21.01) | (25.11) | (19.30) | (18.21) | (19.78) | (17.22) | (17.72) | |
Owner lk | 0.2209 | 0.1939 | 0.2029 | 0.2031 | 0.2031 | 0.1782 | 0.1744 | 0.1653 | 0.1545 | 0.1470 |
(27.53) | (27.30) | (22.60) | (35.69) | (27.80) | (25.73) | (27.75) | (27.04) | (32.76) | (31.94) | |
gwesp | 2.5656 | 2.6514 | 2.5669 | 2.4820 | 2.4020 | 2.3339 | 2.3191 | 2.2897 | 2.2786 | 2.3490 |
(68.32) | (82.79) | (74.36) | (70.16) | (78.87) | (64.30) | (68.18) | (64.31) | (67.41) | (71.91) |
5 The role of outside board members and multiple mandates
6 Networks and firm profitability
6.1 Firm growth and connectivity
6.2 Determinants of profitability
Model | Simple pooled | Year dummy | Year and sector | |||
---|---|---|---|---|---|---|
\(R^2\) | 0.0464 | 0.0794 | 0.1107 | |||
N | 20,942 | 20,942 | 20,942 | |||
Const | 0.05467 | (10.56)* | ||||
Const 1–10 | \(\cdot \) | \(\cdot \) | ||||
Total assets | 0.00077 | (1.58) | 0.00058 | (1.22) | 0.00150 | (2.97)* |
Loans/tot assets | −0.08289 | (−10.89)* | −0.07927 | (−10.58)* | −0.08662 | (−11.04)* |
Tot owned | −0.00166 | (−7.41)* | −0.00168 | (−7.63)* | −0.00132 | (−5.92)* |
Degree/tot assets | −0.05415 | (−2.00)\(^:\) | −0.04806 | (−1.80) | −0.06166 | (−2.31)\(^:\) |
ROA owner net | 0.01647 | (4.32)* | 0.01696 | (4.52)* | 0.01502 | (4.06)* |
ROA board net | 0.00820 | (4.14)* | 0.00816 | (4.19)* | 0.00695 | (3.61)* |
Sec constr | −0.01773 | (−4.93)* | ||||
Sec chem | −0.00047 | (−0.88) | ||||
Sec machinery | 0.00317 | (0.34) | ||||
Sec elec appl | −0.00674 | (−2.20)* | ||||
Sec bank finance | −0.02019 | (−3.23)* | ||||
Sec IT comm | 0.01848 | (5.49)* | ||||
Sec pharma | 0.02718 | (4.55)* | ||||
Sec 7–16 | \(\cdot \) |