Form 8938 is an informational form used to report your foreign assets. No tax is assessed on this form. This reference from the IRS breaks down when filing of this form is required.
And yes, mutual funds are required to be reported on Form 8938 if you meet the overall threshold amount for your filing status as outlined in this link for all of your foreign financial assets.
Please see this comparison chart for a better detail of the accounts that need to be included on Form 8938 filing. The chart also shows when you could potentially have an FBAR filing requirement.
If you are using TurboTax, you can refer to these instructions for guidance on preparing Form 8938.
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