re: At what point and age did your 401k really start to grow?

quote:

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When trump was elected. I am up 18% since the election

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Nearly identical % here since last November.

I have 2 separate accounts, one a roll over to and IRA from 10 years with one company and one is my current 401K with nearly 10 years with this company. I keep them separate for diversity reasons. That's 20 combined years in the market and the jump that last 24 months has opened my eyes a bit.
So to answer the OP, it takes 15 plus years to really see movement and that's only if you stay diligent... never stop investing.