The short answer is yes, the funds in your savings goals are covered by FDIC insurance because they are held at FDIC-insured banks.
Please keep in mind that Oportun is not a bank and has no direct FDIC insurance coverage for your deposits. However, Oportun holds your deposits in a FDIC insured account at Wells Fargo Bank and other FDIC insured financial depository institutions. Your cash savings through Oportun are FDIC-insured up to $250,000. FDIC insurance is only available upon the failure of Wells Fargo Bank or other depository institutions.
FDIC imposes a limit on how much deposit insurance it provides. Currently, the limit is set at $250,000 for all funds that belong to the same person at each bank. If you already have money deposited (separately from the Oportun account) at the same partner bank, the FDIC insurance limit would apply to the total of your funds at that bank; if the total is more than the FDIC limit, the excess may not be insured. You can find more information about FDIC insurance here.