https://www.fidelity.com/cash-management/faqs-cash-management-account
The Cash Balance in the Fidelity Cash Management Account is swept into an FDIC-Insured interest-bearing account at one or more program banks and, under certain circumstances, a Money Market mutual fund (the "Money Market Overflow"). See the FDIC-Insured Deposit Sweep Disclosure for more details. The deposit at the Program Bank is not covered by SIPC. The deposits swept into the program bank(s) are eligible for FDIC Insurance, subject to FDIC insurance coverage limits. Balances that are swept to the Money Market Overflow are not eligible for FDIC insurance but are eligible for SIPC coverage under SIPC rules. All assets of the account holder at the depository institution will generally be counted toward the aggregate limit. For more information about FDIC insurance coverage, please visit the FDIC website at www.FDIC.gov or call 877-ASK-FDIC. As referenced in the FDIC-Insured Deposit Sweep Program disclosure, customers are responsible for monitoring their total assets at the Program Bank to determine the extent of available FDIC insurance. All FDIC insurance coverage is in accordance with FDIC rules. Go to Fidelity.com/fcmacorebanks to see a list of eligible Program Banks, and the FDIC Disclosure Document.
Your account will automatically be reimbursed for all ATM fees charged by other institutions while using a Fidelity® Debit Card linked to your Fidelity Cash Management Account at any ATM displaying the Visa®, Plus®, or Star® logos. The reimbursement will be credited to the account the same day the ATM fee is debited from the account. Please note that there may be a foreign transaction fee of 1% that is not waived, which will be included in the amount charged to your account. The Fidelity® Debit Card is issued by PNC Bank, N.A., and the debit card program is administered by BNY Mellon Investment Servicing Trust Company. These entities are not affiliated with each other or with Fidelity Investments. Visa is a registered trademark of Visa International Service Association, and is used by PNC Bank pursuant to a license from Visa U.S.A. Inc.
You could lose money by investing in a money market fund. Although these funds seek to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Fidelity Investments and its affiliates, the fund’s sponsor, have no legal obligation to provide financial support to money market funds and you should not expect that the sponsor will provide financial support to the fund at any time.