Hello PF!

As stated my employer no longer offers an Employee Stock Purchase Program (which was awesome while it lasted), as we just got bought out by another company. Now I'm looking for an alike place to put my contributions now, for hopefully the same results (it was a stock, but i made 1k gain in around a year). I'm new to investing, and still not sure if i have the proper terminology down yet - but still find the set and forget method the most alluring (as with out 'ESPP' program, i elected the amount i wanted out of my check, and we got company stock at a 10% discount.)

Currently i have; a 401k with the company, maxed out - USAA (UCAGX Cornerstone Aggressive) fund, Fidelity account with some company stock, and also an Acorns account i use that auto-drafts set to Aggressive.

Id be looking for something more conservative, i also would be looking to leave the money in there for 5-15 years - but don't want a penalty if i did withdraw , hopefully it would have a decent ROI whilst still being diverse, and i would be interested in putting around $500 a month into this vehicle. Any suggestions or can anyone more narrow down what i may be looking for? An ETF, Mutual Fund, Bond Portfolio, or something else?

Thanks for any suggestions!