u/Metalcore2

I'm looking to change up my investments which include TSP and Roth IRA:

TSP - 85% C fund / 15% I fund

Roth IRA - 60% VOO, 10% SMH, 10% QQQM, and 20% undetermined

Im aware of some overlap but want more concentrated AI/Tech. 26yrs old with many years until retirement.

I'm looking for suggestions on the last 20% and not sure if I want small/mid cap. But I'm trying to have the last 20% not match something available in the TSP if possible. Thanks for any advice.

I currently invest 5% of pay into TSP C Fund and then invest about $250-300/mo into ROTH IRA (VOO) on Robinhood. I'm realizing that maybe I should have increased the TSP percent instead of opening a new account on Robinhood since I'm not really diversifying any differently (C Fund tracks S&P 500 just like ETF VOO)

I'm 26 years old and have plenty years to retirement. I guess I'm wondering if I should continue to invest into Robinhood but try and diversify more, stop investments in Robinhood and increase TSP %, or continue what I'm doing ....