DBC
Invesco DB Commodity Index Tracking Fund
stock NYSE ETF

UBTI is a problem for individual stocks that generate K-1. MLPs (Master limited Partnerships) are such companes. and individual stock MLPs should be avoided in IRA and Roth. Consult tax professional before selling. You might be hit with a large tax. The dividneds and selling can trigger UBTI. So plan this out and get an estimated of the tax you will have to pay if it is sold.
However note that is he owns a MLP ETF or CEF fund they don't generate K1s. ETF ad CEF are the legal owners of the stock they hold and they much deal with K-1 tax forms. The fund investor tower gets the regular 1099-DIV tax forms. so no K-1 issues.
Now it is not clear to me if you you have a ETF CEF or MLP Marathon oil does have a separate MLP, called MLPX. However I also found MLPX a global X fund that holds some MLPs. So you need to confirm what you have.
I personally have EMO a CEF in my roth that invests in MLPs. It has not caused any issues. MLP are nice bedacrt why are required to pay out most of ther earnings as dividneds. S the yield is higher But there are also BDC (Builds Development compares that also much pay dividends. But unlike MLPs other are no K-1 so no UBTI. But SEC has a bad rule that applies to BDC funds. These funds must add the expense of the BDCs they hold to the funds expenses. But the fund never pays the expenses of the BDCs. So BDC funds often list expense of 13% when there real expense are under 1% and are comparable to fees of ther funds that don't invest in DBC.
In my Roth I hav PBDC 9% yield for BDCS and EMO 8% yield ofr MLPs.

UBTI is a problem for individual stocks that generate K-1. MLPs (Master limited Partnerships) are such companes. and individual stock MLPs should be avoided in IRA and Roth. Consult tax professional before selling. You might be hit with a large tax. The dividneds and selling can trigger UBTI. So plan this out and get an estimated of the tax you will have to pay if it is sold.
However note that is he owns a MLP ETF or CEF fund they don't generate K1s. ETF ad CEF are the legal owners of the stock they hold and they much deal with K-1 tax forms. The fund investor tower gets the regular 1099-DIV tax forms. so no K-1 issues.
Now it is not clear to me if you you have a ETF CEF or MLP Marathon oil does have a separate MLP, called MLPX. However I also found MLPX a global X fund that holds some MLPs. So you need to confirm what you have.
I personally have EMO a CEF in my roth that invests in MLPs. It has not caused any issues. MLP are nice bedacrt why are required to pay out most of ther earnings as dividneds. S the yield is higher But there are also BDC (Builds Development compares that also much pay dividends. But unlike MLPs other are no K-1 so no UBTI. But SEC has a bad rule that applies to BDC funds. These funds must add the expense of the BDCs they hold to the funds expenses. But the fund never pays the expenses of the BDCs. So BDC funds often list expense of 13% when there real expense are under 1% and are comparable to fees of ther funds that don't invest in DBC.
In my Roth I hav PBDC 9% yield for BDCS and EMO 8% yield ofr MLPs.