I've owned BTC and ETH. I currently only have XLM (Stellar lumens) and Steem. I actually bought some Steem when I got into Steemit. I bought XLM at $0.19 so its doing ok. I put $400 fiat into Cryptokitties and pulled out about $1200 in fiat back into my bank account plus left 1.5 Eth in crypto. Thats my stake in XLM. I've never really traded crypto actively. I more just have some crypto to play games with and contests occasionally ;)