What do I do with profits?

I’m a little stuck in what to do with profits in a Roth IRA for a stock pick that hit.

I don’t normally buy individual stocks and am in FTEC in Roth IRA, VTI in traditional, and FXIAX & the international fidelity fund in my 401k.

I got extremely lucky with NBIS in my Roth but now I feel the profit has been enough that I’d like to “lock” that in. Should I just throw it all into FTEC if that’s my core holding and will be for the future?

Thanks