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This necessary turnover has led many academics and investors to question whether factor-based solutions are really worthwhile, given the higher trading costs associated with these strategies.",[],{"nodeType":958,"data":979,"key":980},{},"break-2-4",{"nodeType":958,"data":982,"key":983},{},"break-2-5",{"nodeType":17,"data":985,"value":986,"marks":987},{},"For example, a recent study",[],{"nodeType":989,"data":990,"content":997},"embedded-entry-inline",{"target":991,"type":994,"props":995},{"sys":992},{"id":993,"type":396,"linkType":545},"4Jx7VjgqsQKtV3cqvNzA3w","superscript",{"text":996},"1",[],{"nodeType":17,"data":999,"value":1000,"marks":1001},{}," by Research Affiliates warned about the significant slippage between the factor returns realized by mutual fund managers and the theoretical factor returns that would have been achieved by virtual portfolios, over the 1991–2016 period. The authors attributed this gap to a number of costs related to implementation, including trading costs.",[],{"nodeType":958,"data":1003,"key":1004},{},"break-4-0",{"nodeType":958,"data":1006,"key":1007},{},"break-4-1",{"nodeType":17,"data":1009,"value":1010,"marks":1011},{},"In a 2016 white paper",[],{"nodeType":989,"data":1013,"content":1019},{"target":1014,"type":994,"props":1017},{"sys":1015},{"id":1016,"type":396,"linkType":545},"1sjWPwbBFrLawHvShInqGK",{"text":1018},"2",[],{"nodeType":17,"data":1021,"value":1022,"marks":1023},{},", Joop Huij and Georgi Kyosev, of Robeco’s Quant research team, warned specifically about the high rebalancing costs implied by the replication of some common smart beta indices. Analyzing the impact of composition changes for two popular indices, they found that these costs are actually higher than they might appear, as the rebalancing process also leads to lower index returns. This is because strategies that follow publicly available indices, for which changes are announced in advance, tend to buy stocks that have just had a price run-up, and sell stocks that have just suffered a price decrease.",[],{"nodeType":958,"data":1025,"key":1026},{},"break-6-0",{"nodeType":958,"data":1028,"key":1029},{},"break-6-1",{"nodeType":17,"data":1031,"value":1032,"marks":1033},{},"More generally, an FTSE Russell survey carried out in 2016 suggested that avoiding excessive portfolio turnover ranked fourth among investor concerns, when considering ",[],{"nodeType":540,"data":1035,"content":1043},{"target":1036,"type":546,"props":1039},{"sys":1037},{"id":1038,"type":396,"linkType":545},"4Fv1BhyfAtXllDxfG2nlBC",{"id":1038,"internal":1040,"title":1041,"url":1042,"isAllowed":512},"Glossary Quantitative investing - Traditional method vs factor allocation","Traditional method vs factor allocation","/begrippenlijst/kwantitatief-beleggen/traditional-method-vs-factor-allocation",[1044],{"nodeType":17,"data":1045,"value":1046,"marks":1047},{},"factor-oriented allocation",[],{"nodeType":17,"data":1049,"value":557,"marks":1050},{},[],{"alignment":1052},"100 Center",{"id":70,"quote":1054,"design":1056,"type":69},{"quote":1055},"Turnover can be reduced without lowering gross returns too much, but only up to a certain point",{},{"id":72,"title":1058,"text":1059,"design":1079,"type":66},"Reducing, not minimizing, turnover",{"nodeType":9,"data":1060,"content":1061},{},[1062],{"nodeType":13,"data":1063,"content":1064},{},[1065,1069,1072,1075],{"nodeType":17,"data":1066,"value":1067,"marks":1068},{},"But while the risk of excessive turnover should not be overlooked, it should not be exaggerated, either. In fact, it is possible to considerably reduce turnover without hampering performance too much. Robeco’s in-house research shows that when investors start keeping securities with less attractive factor qualities in their portfolios for longer, trading costs tend to decrease faster than the gross return. As a result, the net return/risk ratio tends to increase when turnover starts to decline.",[],{"nodeType":958,"data":1070,"key":1071},{},"break-0-0",{"nodeType":958,"data":1073,"key":1074},{},"break-0-1",{"nodeType":17,"data":1076,"value":1077,"marks":1078},{},"This finding does not mean that portfolio changes should be minimized. Turnover can be reduced without lowering gross returns too much, but only up to a certain point. And gross returns also tend to drop rapidly once we allow unattractive securities to remain in the portfolio for too long or rebalance too infrequently. Investors must therefore find the optimal trade-off between factor exposure and rebalancing costs, in order maximize after-cost performance.",[],{"alignment":1052},{"id":74,"title":1081,"text":1082,"design":1132,"type":66},"Common techniques",{"nodeType":9,"data":1083,"content":1084},{},[1085,1092,1099,1106,1125],{"nodeType":13,"data":1086,"content":1087},{},[1088],{"nodeType":17,"data":1089,"value":1090,"marks":1091},{},"There are many ways to reduce and control portfolio turnover, and that can be applied to all kinds of factor-based strategies. The most obvious one is setting and adjusting fixed rebalancing intervals, in order to reassess factor exposures more or less frequently. Another option is allowing a portfolio to deviate more or less from its ideal composition, if only factor exposures were taken into account and implementation costs were neglected. The greater the deviation tolerance, the lower the turnover will tend to be.",[],{"nodeType":13,"data":1093,"content":1094},{},[1095],{"nodeType":17,"data":1096,"value":1097,"marks":1098},{},"In addition to these general techniques, which are widely used by investment managers and index providers, there are also more strategy-specific ways to reduce turnover. Empirical studies carried out on the short-term reversal phenomenon, which has been extensively documented in the academic literature, provide a good illustration of this.",[],{"nodeType":13,"data":1100,"content":1101},{},[1102],{"nodeType":17,"data":1103,"value":1104,"marks":1105},{},"Short-term reversal strategies exploit the fact that stocks that experience huge gains or losses during one month tend to reverse that trend the following month. However, many investors remain skeptical about this kind of approach because they involve huge turnover, as signals typically change completely every month.",[],{"nodeType":13,"data":1107,"content":1108},{},[1109,1113,1121],{"nodeType":17,"data":1110,"value":1111,"marks":1112},{},"But a 2011 paper",[],{"nodeType":989,"data":1114,"content":1120},{"target":1115,"type":994,"props":1118},{"sys":1116},{"id":1117,"type":396,"linkType":545},"73nWOZkqOFhBvoM0qjgYrv",{"text":1119},"3",[],{"nodeType":17,"data":1122,"value":1123,"marks":1124},{}," by Wilma de Groot, Joop Huij and Weili Zhou, of Robeco’s Quant Equity research team, showed that the high transaction costs incurred in many these investment strategies implemented in the US stock market could largely be attributed to excessive trading in small caps. Trading costs could therefore be significantly reduced by limiting the stock universe to large caps. Similarly, comparable ways to reduce turnover can often be found for different kinds of quantitative strategies.",[],{"nodeType":13,"data":1126,"content":1127},{},[1128],{"nodeType":17,"data":1129,"value":1130,"marks":1131},{},"All of Robeco’s quantitative strategies use portfolio-construction processes designed to keep trading low and trading costs under control, using a securities-ranking approach. This kind of method is less sensitive to changing market inputs. Moreover, for credit markets, which lack the immediacy seen in equity markets and where keeping transaction costs under control proves more challenging, we have developed a specific investment process, in which liquidity management is actually embedded in the portfolio construction process itself. This enables us to send only those orders which have a high probability of being executed.",[],{"alignment":1052},{"id":76,"text":1134,"design":1211,"type":66},{"nodeType":9,"data":1135,"content":1136},{},[1137,1145],{"nodeType":1138,"data":1139,"content":1140},"heading-3",{},[1141],{"nodeType":17,"data":1142,"value":1143,"marks":1144},{},"Footnotes",[],{"nodeType":13,"data":1146,"content":1147},{},[1148,1151,1157,1161,1169,1171,1177,1180,1188,1191,1197,1200,1208],{"nodeType":17,"data":1149,"value":32,"marks":1150},{},[],{"nodeType":989,"data":1152,"content":1156},{"target":1153,"type":994,"props":1155},{"sys":1154},{"id":993,"type":396,"linkType":545},{"text":996},[],{"nodeType":17,"data":1158,"value":1159,"marks":1160},{}," ",[],{"nodeType":902,"data":1162,"content":1164},{"uri":1163},"https://www.researchaffiliates.com/en_us/publications/articles/601-the-incredible-shrinking-factor-return.html",[1165],{"nodeType":17,"data":1166,"value":1167,"marks":1168},{},"Read the related article on mutual fund returns",[],{"nodeType":958,"data":1170,"key":1004},{},{"nodeType":989,"data":1172,"content":1176},{"target":1173,"type":994,"props":1175},{"sys":1174},{"id":1016,"type":396,"linkType":545},{"text":1018},[],{"nodeType":17,"data":1178,"value":1159,"marks":1179},{},[],{"nodeType":902,"data":1181,"content":1183},{"uri":1182},"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2846982&download=yes",[1184],{"nodeType":17,"data":1185,"value":1186,"marks":1187},{},"Read the academic paper on the impact of rebalancing on SSRN",[],{"nodeType":958,"data":1189,"key":1190},{},"break-8-0",{"nodeType":989,"data":1192,"content":1196},{"target":1193,"type":994,"props":1195},{"sys":1194},{"id":1117,"type":396,"linkType":545},{"text":1119},[],{"nodeType":17,"data":1198,"value":1159,"marks":1199},{},[],{"nodeType":902,"data":1201,"content":1203},{"uri":1202},"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1963131",[1204],{"nodeType":17,"data":1205,"value":1206,"marks":1207},{},"Read the latest related academic paper on SSRN",[],{"nodeType":17,"data":1209,"value":32,"marks":1210},{},[],{"alignment":1052}]