The McFadden R-squared shows a value of approximately 0.21, which can be considered as good or acceptable. Since this research approach uses a logistic model and not a linear model, the value is acceptable and comparable to other research papers, which use the same academic procedure. Furthermore, the number of cases “correctly predicted can also be stated as good with approximately 73.4%.
Focusing on the independent variables, it becomes evident, that 6 out of 12 are significant (given an α < 0,05 and excluding the constant). Hence, the independent variables “INVESTED_ALREADY”, “REASONS_INVESTING”, “RISK”, “TRANSPARENCY”, “SOCIAL” and “GOVERNANCE” do not have an impact on the probability to invest in a sustainable robo-advisor. In other words, it has no effect whether a young professional already has investment experience or not. Additionally, the reasons behind the investment—neither short- nor long-term—are significant in the given model and thus of interest for the dependent variable. Moreover, the social and governance aspects of sustainability do not play an important role in the investment process, which indicates that young investors tend to pay more attention to the ecological aspect of sustainability.
The regression model was checked on collinearity problems, thereby referring to the variance inflation factors. The minimum possible value for an independent variable is 1.0. Values > 10.0 may indicate that a collinearity problem may exist. The results in Table 3 show that all given independent variables show no signs of collinearity problems because the range of the VIF reaches a maximum value of 2611, which is far from the critical value of > 10.0, thereby indicating appropriate values for positive interpretation.
Table 3. Variance Inflation Factors of Independent Variables.
Independent Variable |
Variance Inflation Factor |
MALE |
1194 |
AGE |
1100 |
EDUC_DUMMY |
1110 |
REASONS_INVESTING |
1097 |
ADVISING_INVESTMENTS |
1092 |
RISK |
1392 |
TRANSPARENCY |
1469 |
COST_AWARENESS |
1332 |
ECOLOGICAL |
2580 |
SOCIAL |
2611 |
GOVERNANCE |
1473 |
Since GRETL is not able to display the odds ratio, the calculation was manually conducted via Excel by using the coefficients (b) and the excel function Exp(b). In doing so, it makes the results from the logistic regression model easier to interpret and show the impacts of each significant independent variable on the dependent variable. The analysis and interpretation of the results show surprising but logical (in terms of the academic discussion) findings. For male investors, the probability of using a sustainable robo-advisor is increased 2.09 times. This still underlines the fact that in general, investors tend to be male. Furthermore, if the age increases by a value of 1, it increases the probability of use by 9.5%. In the research, the focus lies on young professionals within the age range of 19 to 39 years. This can be referred to the fact that young investors may not have the money to invest in a robo-advisor. With growing age and ongoing career, financial situation may change, thereby leading to a higher awareness towards investing opportunities. Another very significant result shows that the probability of use increases by 96% if the investor shows an education on an academic level (e.g., bachelor or master’s degree). This may indicate an important hint for robo-advisors, who are offered by traditional banks or asset managers. They often struggle to target the right clients within their existing clientele. Another important finding underlines the benefits of robo-advisory as a very cost-efficient investment offering. The probability of using a sustainable robo-advisor increases by 44% with every increase on the Likert scale regarding the cost awareness of investors. The same effect can also be stated on the Likert scale towards the ecological awareness, thereby leading to 1.1 times higher probability of use with increasing Likert values. The results are summarized in Table 4.
Table 4. Odds Ratios of Significant Independent Variables.
Significant Independent Variable |
Coefficient |
Odds Ratio |
MALE |
0.741439 |
2.098953737 |
AGE |
0.0914433 |
1.095754646 |
EDUC_DUMMY |
0.671967 |
1.958085088 |
ADVISING_INVESTMENTS |
0.931415 |
2.538098047 |
COST_AWARENESS |
0.371011 |
1.449199014 |
ECOLOGICAL |
0.743656 |
2.103612279 |
On that basis, the following research hypotheses stated in
Section 2.1 were tested, thereby leading to the following conclusions in
Table 5:
Table 5. Final Hypothesis Testing Results.
|
Hypothesis |
Testing Result |
H1 |
The likelihood of using a sustainable robo-advisor is higher among male investors. |
Fail to reject |
H2 |
The higher the age, the higher the likelihood to use a sustainable robo-advisor. |
Fail to reject |
H3 |
The likelihood of using a sustainable robo-advisor is higher among academics. |
Fail to reject |
H4 |
The likelihood of using a sustainable robo-advisor is higher among investors with investment experience. |
Fail to reject |
H5 |
If the reason for investing is long-term oriented, the likelihood of using a sustainable robo-advisor is higher. |
Rejected |
H6 |
The likelihood of using a sustainable robo-advisor is higher among investors preferring professional finance advice. |
Fail to reject |
H7 |
The higher the risk appetite, the higher the likelihood of using a sustainable robo-advisor. |
Rejected |
H8 |
The higher the demand for investment transparency, the higher the likelihood of using a sustainable robo-advisor. |
Rejected |
H9 |
The higher the cost-awareness, the higher the likelihood of using a sustainable robo-advisor. |
Fail to reject |
H10 |
The higher the importance for ecological aspects, the higher the likelihood of using a sustainable robo-advisor. |
Fail to reject |
H11 |
The higher the importance for social aspects, the higher the likelihood of using a sustainable robo-advisor. |
Rejected |
H12 |
The higher the importance for governance aspects, the higher the likelihood of using a sustainable robo-advisor. |
Rejected |
Based on the analysis of the data and the hypothesis testing results presented in Table 5, practical implications can be derived. In the following, the significant research insights are listed and explained in a way, that robo-advisors and companies, which plan to introduce a digital advisory service, gain immediate orientation for strategic business decisions.
-
Regarding H1: the collected data set consists of 47.2% (144 respondents) male online participants with an average age of 28, which is also the average age of the whole population. The findings indicate that a primary focus on male investors may have the highest chance of winning new clients for the robo-advisory-service. Strategic marketing operations could target young and male clients, who have typically finished their studies in that life period and started to earn money from employment.
-
Regarding H2: the higher the age, the higher the probability to use a sustainable robo-advisor. This may refer to various factors, which are not subject to this study. Some hypotheses may be eligible to state, that there is a positive correlation between the age and the available household income. Furthermore, another valid hypothesis could be that there is a positive correlation between the age and the interest in sustainable investment matters. Robo-advisors should consider that a profitable foundation is grounded on a healthy balance between young clients (e.g., as stated in H1) and older clients with a more beneficial financial status. The sole emphasis on young clients with an average age of 28 may not be sufficient to cover business expenses and to lead to a positive annual result.
-
Regarding H3: academics are more likely to use a sustainable robo-offering. This indicates that robo-advisors should make use of their big data departments to identify the partial number of existing clients with an academic degree. Furthermore, strategic marketing measures may focus on the establishment of an academic clientele. This could be a concise marketing strategy at universities or other research institutes to attract the desired target group.
-
Regarding H4: experienced investment clients show higher acceptance towards the use of a sustainable robo-advisor. Besides the already mentioned facts, another strategic approach is to focus on experienced clients and provide them with marketing information to create awareness for the robo-offering.
-
Regarding H6: the results of this hypothesis test is surprising because robo-advisory is a digital service, which originally seeks to substitute human advisory by using algorithms. Nonetheless, the gathered data prove that clients who are loyal to their advisors may also be a strategic target group for the sustainable offering. However, this may be of secondary priority because businesses seek to create new revenue streams by winning new clients with the digital alternative. Human advisory services still are more profitable due to the higher pricing.
-
Regarding H9: cost-aware clients are more likely to use the robo-offering. Banks or robo-advisors often do not have data regarding the cost-awareness of clients. In that case, traditional banks may use the existing relationship of the advisors with their clients to manually assess the partial number of cost-aware clients. In doing so, it provides a promising approach to identify high-potential prospects for the digital service alternative.
4. Conclusions and Discussion
The given research paper provides essential findings on how to define a possible target group for sustainable robo-advisors. Especially from a bank or asset manager point-of-view, existing clientele can be purposefully targeted when using the research findings from this paper (as outlined in the part of practical implications in
Section 3). Based on the findings, the indication is valid that there is demand for sustainable robo-advisory, especially among young and male investors. It is interesting that the ecological aspect of sustainability is more dominant than governmental or social aspects. This allows the conclusion, that sustainability is mainly associated among the population in this study. With the stated practical implications, companies providing robo-advisory have confidence in introducing sustainable portfolios to meet private investors’ demands. In doing so, the paper indicates several strategic starting points in terms of gender, age or financial characteristics.
The result of this paper stands in accordance with the Sustainable Finance Disclosure Regulation from the European Union, which was introduced in March 2021. The regulation aims to increase transparency by providing classification investments to easily identify sustainable and non-sustainable investment-fund products. Subject to discussion could be an increased focus on stressing social and governmental aspects of investing because the given findings show a lack of awareness among private investors. Policy makers may introduce regulatory requirements to clearly outline the scope of ESG in each investment service, independent from whether it concerns human or digital advisory [
10]. Since robo-advisory still constitutes a rather young business model, objective institutions such as Stiftung Warentest regularly analyzes the performance and the service quality of the robos. The sustainability trend and the findings in this paper could facilitate analysis on how sustainable the investments and recommended portfolios really are [
40].