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Cascades in financial networks

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119:; and as the network approaches complete integration the percentage of the first failures approaches zero. However, the integration increases the percentage of organizations that fail due to higher interconnection. In addition, up to some threshold, diversification does increase the percentage of discontinuous drops in value. Yet after the threshold level, the diversification decreases the percentage of failures: the authors say the following with respect to diversification: “it gets worse before it gets better”. 25: 111:
of the one organization are spread out among the other members of the network, given the fraction of the assets of the organization cross-held by other organizations is fixed. Integration refers to the fraction of the assets of the organization cross-held by other organizations given the number of
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Eliot, Golub and Jackson (2013) provide an empirical method how to model cascades in financial networks. They assume that organizations in the network can cross hold assets of other organizations in the network. Also, they assume that players outside of the network can hold assets of the
92:. It can be defined as the discontinuous value loss (e.g. default) of the organization caused by the discontinuous value loss of another organization in the network. There are three conditions required for a cascade, there are; a failure, contagion and interconnection. 98:
and integration in the financial network determine whether and how failures will spread. Using the data on cross-holdings of organizations and on the value of organizations, it is possible to construct the dependency matrix to simulate cascades in the financial network.
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The authors find the equity value of an organization using the works by Brioschi, Buzzachi and Colombo (1989) and Fedina, Hodder and Trianitis (1994):
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The equity value is defined as the value of primitive assets and the value of claims on the primitive assets in other organizations in the network.
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Elliot, Golub and Jackson (2013) characterize the financial network by diversification and integration. Diversification means to which extent
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Intuitively, the higher the threshold value for the discontinuous drop in the organization’s value the higher the percentage of failures is.
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Brioschi, F., Buzzachi, Land Colombo, M.M. 1989. "Risk Capital Financing and the Separation of Ownership and Control in Business Groups,"
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The authors conclude that the financial network is most susceptible to cascades if it has medium diversification and medium integration.
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in another member of the financial network. In an extreme this can cause failure of the whole network in what is known as
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goes below this value, then a discontinuous drop in value happens and the organization fails. The cap on failure costs is
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Their model starts with the following assumptions (all notations are borrowed from Elliot, Golub and Jackson (2013)):
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Fedina, M., Hodder J.E. and Trianitis A.J. 1994. "Cross Holdings Estimation Issues, Biases, and Distorntions,"
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The equity value and the market value equations are extended by introducing threshold value
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Using random network, the authors show that high integration decreases the percentage of
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The references used may be made clearer with a different or consistent style of
1477: 752:{\displaystyle v_{i}=\sum _{k}D_{ik}p_{k}+\sum _{j}C_{ij}-\sum _{j}C_{ji}V_{i}} 46: 1582: 1487: 527:
The counterpart of the equation above in terms of matrix algebra is given by
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Elliott, M., Golub, B. and Jackson 2013. M Financial Networks and Contagion
1120:{\displaystyle V_{i}=\sum _{k}D_{ik}p_{k}+\sum _{j}C_{ij}V_{j}-k_{i}I_{i}} 1544: 1528: 1507: 1511:
http://www.its.caltech.edu/~melliott/papers/financial_networks.pdf
514:{\displaystyle V_{i}=\sum _{k}D_{ik}p_{k}+\sum _{j}C_{ij}V_{j}} 108: 1130:
Using matrix algebra, the expression above is equivalent to
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be an indicator function that is equal to 1 if the value of
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less the claims of other organizations in the network on i.
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There are m "primitive" assets (e.g. factors of production)
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The market value including failure costs is given then by
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is a fraction of primitive assets of the organization
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Failure of one institution triggering further failures
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F is a n by n matrix whose diagonal element is :
328: 285: 237: 191: 163: 139:organizations in the network. They call the letter 1452: 1432: 1399: 1282: 1232: 1200: 1119: 983: 960: 929: 886: 846: 751: 620: 560: 513: 408: 376: 320:is a n by n matrix with zeros as diagonal elements 307: 262: 207: 176: 102: 1400:{\displaystyle v=F(I-C)^{-1}(Dp-b(v))=A(Dp-b(v))} 1580: 995:is below the threshold and 0 if the value of 1440:represents the fraction of failure costs of 147:There are n organizations that form a set N= 1539:Elliott, M., Golub, B. and Jackson 2013. M 1524:Elliott, M., Golub, B. and Jackson 2013. M 80:are situations in which the failure of one 112:the organizations cross-holding is fixed. 65:Learn how and when to remove this message 377:{\displaystyle F_{ii}=1-\sum _{j}C_{ji}} 133: 1581: 847:{\displaystyle v=FV=F(I-C)^{-1}Dp=ADp} 1201:{\displaystyle V=(I-C)^{-1}(Dp-b(v))} 905: 1520: 1518: 18: 937:. If the value of the organization 13: 14: 1615: 1545:https://ssrn.com/abstract=2175056 1529:https://ssrn.com/abstract=2175056 1515: 1508:https://ssrn.com/abstract=2175056 1541:Financial Networks and Contagion 1526:Financial Networks and Contagion 1283:{\displaystyle b_{i}=k_{i}I_{i}} 23: 1570:The Review of Financial Studies 1557:Journal of Banking and Finance, 902:holds directly and indirectly. 631:The market value is defined by 103:Diversification and integration 1562: 1549: 1533: 1500: 1394: 1391: 1385: 1370: 1361: 1358: 1352: 1337: 1325: 1312: 1227: 1221: 1195: 1192: 1186: 1171: 1159: 1146: 1002:Then the equity value becomes 814: 801: 621:{\displaystyle V=(I-C)^{-1}Dp} 600: 587: 263:{\displaystyle C_{ij}\geq \ 0} 78:Cascades in financial networks 1: 1493: 7: 1471: 894:represents the fraction of 10: 1620: 1240:is a vector whose element 861:is the dependence matrix. 274:held by the organization 153:Market price of an asset 128: 999:is above the threshold. 308:{\displaystyle C_{ii}=0} 215:is a share of the asset 1604:Financial risk modeling 766:is the equity value of 561:{\displaystyle V=Dp+CV} 1454: 1434: 1433:{\displaystyle A_{ij}} 1401: 1284: 1234: 1202: 1121: 985: 962: 931: 898:primitive assets that 888: 887:{\displaystyle A_{ij}} 848: 753: 622: 562: 515: 410: 409:{\displaystyle F_{ii}} 378: 309: 264: 209: 208:{\displaystyle D_{ik}} 178: 1455: 1435: 1402: 1285: 1235: 1203: 1122: 986: 963: 961:{\displaystyle k_{i}} 932: 930:{\displaystyle t_{i}} 889: 849: 754: 623: 563: 516: 411: 379: 310: 265: 229:is then n by m matrix 219:that an organization 210: 179: 177:{\displaystyle p_{k}} 141:outside shareholders. 134:Without Failure Costs 82:financial institution 1444: 1414: 1300: 1244: 1233:{\displaystyle b(v)} 1215: 1137: 1009: 975: 945: 914: 868: 780: 638: 578: 534: 426: 390: 326: 283: 235: 189: 161: 773:The letter implies 571:The letter implies 1450: 1430: 1397: 1280: 1230: 1198: 1117: 1070: 1034: 981: 958: 927: 906:With Failure Costs 884: 844: 749: 725: 699: 663: 618: 558: 511: 487: 451: 406: 374: 360: 305: 260: 205: 174: 1599:Financial markets 1483:Interbank network 1453:{\displaystyle j} 1061: 1025: 984:{\displaystyle I} 716: 690: 654: 478: 442: 351: 256: 86:cascading failure 75: 74: 67: 1611: 1594:Financial crises 1573: 1566: 1560: 1553: 1547: 1537: 1531: 1522: 1513: 1504: 1459: 1457: 1456: 1451: 1439: 1437: 1436: 1431: 1429: 1428: 1406: 1404: 1403: 1398: 1336: 1335: 1289: 1287: 1286: 1281: 1279: 1278: 1269: 1268: 1256: 1255: 1239: 1237: 1236: 1231: 1207: 1205: 1204: 1199: 1170: 1169: 1126: 1124: 1123: 1118: 1116: 1115: 1106: 1105: 1093: 1092: 1083: 1082: 1069: 1057: 1056: 1047: 1046: 1033: 1021: 1020: 990: 988: 987: 982: 967: 965: 964: 959: 957: 956: 936: 934: 933: 928: 926: 925: 893: 891: 890: 885: 883: 882: 853: 851: 850: 845: 825: 824: 762:Market value of 758: 756: 755: 750: 748: 747: 738: 737: 724: 712: 711: 698: 686: 685: 676: 675: 662: 650: 649: 627: 625: 624: 619: 611: 610: 567: 565: 564: 559: 520: 518: 517: 512: 510: 509: 500: 499: 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1488:Systemic risk 1486: 1484: 1481: 1479: 1476: 1475: 1469: 1467: 1463: 1447: 1425: 1422: 1418: 1388: 1382: 1379: 1376: 1373: 1367: 1364: 1355: 1349: 1346: 1343: 1340: 1332: 1329: 1321: 1318: 1315: 1309: 1306: 1303: 1296: 1295: 1294: 1291: 1275: 1271: 1265: 1261: 1257: 1252: 1248: 1224: 1218: 1189: 1183: 1180: 1177: 1174: 1166: 1163: 1155: 1152: 1149: 1143: 1140: 1133: 1132: 1131: 1112: 1108: 1102: 1098: 1094: 1089: 1085: 1079: 1076: 1072: 1066: 1062: 1058: 1053: 1049: 1043: 1040: 1036: 1030: 1026: 1022: 1017: 1013: 1005: 1004: 1003: 1000: 998: 994: 978: 971:Further, let 969: 953: 949: 940: 922: 918: 903: 901: 897: 879: 876: 872: 862: 860: 841: 838: 835: 832: 829: 826: 821: 818: 810: 807: 804: 798: 795: 792: 789: 786: 783: 776: 775: 774: 771: 769: 765: 744: 740: 734: 731: 727: 721: 717: 713: 708: 705: 701: 695: 691: 687: 682: 678: 672: 669: 665: 659: 655: 651: 646: 642: 634: 633: 632: 615: 612: 607: 604: 596: 593: 590: 584: 581: 574: 573: 572: 555: 552: 549: 546: 543: 540: 537: 530: 529: 528: 525: 506: 502: 496: 493: 489: 483: 479: 475: 470: 466: 460: 457: 453: 447: 443: 439: 434: 430: 422: 421: 420: 401: 398: 394: 385: 369: 366: 362: 356: 352: 348: 345: 342: 337: 334: 330: 322: 319: 316: 302: 299: 294: 291: 287: 279: 277: 273: 257: 251: 246: 243: 239: 231: 228: 225: 222: 218: 200: 197: 193: 185: 169: 165: 156: 152: 149: 146: 145: 144: 142: 126: 123: 120: 118: 113: 110: 100: 97: 93: 91: 87: 83: 79: 69: 66: 58: 48: 44: 38: 37: 32:This article 30: 21: 20: 1569: 1564: 1556: 1551: 1540: 1535: 1525: 1502: 1465: 1461: 1410:The element 1409: 1292: 1210: 1129: 1001: 996: 992: 970: 938: 909: 899: 895: 864:The element 863: 858: 856: 772: 767: 763: 761: 630: 570: 526: 523: 418: 317: 275: 271: 226: 220: 216: 154: 140: 137: 124: 121: 116: 114: 106: 94: 77: 76: 61: 52: 33: 1559:13, 742-772 55:August 2013 1583:Categories 1572:, 7, 61-69 1494:References 1464:incurs if 47:footnoting 1380:− 1347:− 1330:− 1319:− 1181:− 1164:− 1153:− 1095:− 1063:∑ 1027:∑ 819:− 808:− 718:∑ 714:− 692:∑ 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Index

citation style
citation
footnoting
Learn how and when to remove this message
financial institution
cascading failure
systemic failure
Diversification
assets
Financial risk
Interbank network
Systemic risk
https://ssrn.com/abstract=2175056
http://www.its.caltech.edu/~melliott/papers/financial_networks.pdf


https://ssrn.com/abstract=2175056
https://ssrn.com/abstract=2175056
Categories
Systemic risk
Financial crises
Financial markets
Financial risk modeling

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