Stop Overdraft Profiteering Act of 2018 This bill amends the Truth in Lending Act to prohibit a depository institution from engaging in certain acts in connection with overdraft coverage. Each depository institution that offers overdraft coverage for accounts must disclose overdraft coverage fees and certain related information. A depository institution must provide certain other disclosures regarding its overdraft protection program, including prompt notification of the account's overdraft status. The bill limits the number of overdraft fees a consumer may be charged each month and year, and provides that such fees must be reasonable. The bill prohibits an overdraft coverage fee if the overdraft results solely from a debit hold amount that exceeds the actual dollar amount of the transaction. The bill also prohibits a depository institution from: charging a non-sufficient fund fee for any debit card transaction, or reporting negative information regarding consumer use of overdraft coverage to any consumer reporting agency when the overdraft amounts and coverage fees are paid under the terms of an overdraft coverage program.