<prompt> Human: Hello. I used to always let my father, who has been a day trader since he retired, manage my investments. That was until early last year when I took a class in personal finance and read some books and realized that his investing stratigy was incredibly risky and undiversified and his few years of success had probably just been luck. He invested in only one or two stocks at a time, as well as options and things like the VIX. obviously, he was opposed to me just investing in some broad market funds at vanguard, so we agreed go half and half. My half went to vanguard with both a basket of etfs and a good bit into the target retirement fund 2060 not necessarily using it for retirement, just liked its current allocation and lower minimum. With his half, he went 95 into the TVIX, which is violitility times two. It went up about 5 percent, and he asked me if I wanted to sell. I said its up to him since hes managing that half. He kept it, thinking it would like double when the whole fiscal cliff thing happened. Of course it didnt, and it proceeded to go from 20 a share to around 5. Thats about half my life savings gone in a month. To add to that, my father has now gotten a job so cant manage that money anymore. So every day, I watch is go lower and lower, often dropping 5 a day. Meanwhile, Ive gained a nice 15 or so at vanguard. My question is should I just tell him go sell it and accept the lose of 75 or just let it sit and hope it will at least go up to my purchase price in a few years when some other crisis is upon us. Please dont make this a thread of insulting my or my fathers discussions, weve certainly already learned out lesson. Thanks.Edit: Thanks for all the help! Entirely convinced I should sell it asap. Ill ask my dad tonight if he would consider giving me some of the money that he lost me back, since he didnt even understand what he was investing in, and how terrible it is for anything over a day. Hope hes able to empathize with my situation. Never thought I would get this many comments, but Ill try to answer all the top ones. Assistant: obviously, he was opposed to me just investing in some broad market funds at vanguardHuh? Why does he have any say at all in how you invest your money?Human: I put trust in him since he had been investing for decades, while all I had done was read a book haha.Assistant: Then ask him for the money he lost. Why are you paying for his mistake?If you fucked up like this with HIS money, what would you do? What would he expect from you?Human: Wow hadnt even considered that. Two things though. First, he will mention that it is partly my responsibility, since he asked me if he should sell like I mentioned. Also, he might say that they dont have that kind of money 4k lying around. Maybe Ill ask for half of the loss back to be a bit more reasonable.  <response>: It sucks that your dad lost your money but I dont see why he should be responsible for any losses. You told him he should manage the money for you. Was he going to get the gains if he grew the money? No? Then why would he be responsible for losses? That seems completely unfair if you expect him to take all the risk with none of the gains.No other broker would pay you back, it shouldnt be any different because its your dad. He should feel terrible, but he shouldnt pay you back. You both learned a lesson the hard way.That said, I dont agree with his philosophy either... I wouldnt invest anybodys money without a proper legal contract and explaining to them that there is a risk they could lose everything. 