I am a little afraid to say this, but I have a 401k plan that has a really decent amount of money in it and more than 15 years of building; however, in early 2017, my BTC investment was on parity with it and even surpassed it and even now is getting to be like 4x the value of my 401k plan with way less amount of money placed into bitcoin over a much shorter period of time.
https://www.broadfinancial.com/self-directed/bitcoin-ira/#justsayin'
Thanks for the link.
I was just comparing performance of my traditional investments, such as a big one that I already established many years ago (hahahaha established close to 17 years, ago) to my BTC investment - but I am not really interested, at the moment, in diversifying any of my current assets into such a self-directed Bitcoin IRA - even though it would likely be appealing to some thread readers.