Through Instagram you cannot view specific users who reshared your posts yet you can use insights of your account to obtain details. Public and business account holders should check their post by tapping the three-dot menu (⋮) followed by selecting View Story Reshares to determine if users added their content to their Stories. View Insights on your post generates information about shares through the Shares section but Instagram refuses to disclose which users shared it. Private account followers are the only ones who can share posts in their Stories but you will receive a notification only when followers tag you.