Answer:
This is unethical
Step-by-step explanation:
Unethical behaviour is defined as a behaviour that is considered o be morally wrong for a group of people or in a given industry.
In the given scenario the researcher is using sophisticated equipment for an experiment.
He chose a company that he has shares in to supply the equipment.
This can be seen as a use of his influence for financial gain that is outside the normal compensation he is receiving