The Bitcoin and Ethereum symbols I mentioned earlier, as buy/hold > 20% 1-year return, are ETHE and GBTC.
And that list of trading symbols, in order of most profit to least, is:
BCHG
HZEN
BDCO
BEGI
ETCG
LTCN
MEEC
QEPC
GDLC
FMCC
RSTN
GLGI
GXLM
ATGN
GBFH
ETHE
FACO
IVFH
GBTC
ELTP
FNMA
RVIV
FTLF
CHUC
I have not researched fundamentals on any of these symbols, only technicals using Bollinger upper and lower bands as buy and sell points.