Iowa. Code. Jud. Cond. 51:3.11
Comment
[1] Judges are generally permitted to engage in financial activities, including managing real estate and other investments for themselves or for members of their families. Participation in these activities, like participation in other extrajudicial activities, is subject to the requirements of the Iowa Code of Judicial Conduct. For example, it would be improper for a judge to spend so much time on business activities that it interferes with the performance of judicial duties. See rule 51:2.1. Similarly, it would be improper for a judge to use his or her official title or appear in judicial robes in business advertising, or to conduct his or her business or financial affairs in such a way that disqualification is frequently required. See rules 51:1.3 and 51:2.11.
[2] As soon as practicable without serious financial detriment, the judge must divest himself or herself of investments and other financial interests that might require frequent disqualification or otherwise violate this rule.