Does she have a point?

[doubleaces89]

I approached my sister with a share tip a years ago, thinking this could increase by 2-4x. She gave me some money to invest on her behalf, and totally forgot about it.

Yesterday it doubled in value, and I suggested selling. However, she got annoyed me when she found out that my % returns on this stock far exceeded hers, as I'd been actively trading it rather than just holding it.

She thought I should have taken the same approach with her investment, as I did my own. I tried to explain that I'm more comfortable risking my own money, rather than someone else, which only made her more irritated.

I too am annoyed at this point, as I think I've done her a favour, doubled her investment, and all I'm getting back is hassle, rather than a thank you.

However, does she have a point?

Maybe you could have discussed it with her ? Doing the same with her money.
However, you have doubled her money so she shouldn't complain.

If she’s this upset about you doubling her money, how would she have reacted if she’d lost money?

Nope, you've done her a favour, she sounds very ungrateful.

I think if it was a one-time tip it would have been nice to share the tip (which you have done telling her about the stock). But actively trading is a lot of work and potential risk so I don't think she has any right to complain.

Why didn't she manage it herself?

She doesn’t understand the difference between investing, which you did for her; lower risk, and trading which you did for yourself; higher risk.

@BigSkyLife

If she’s this upset about you doubling her money, how would she have reacted if she’d lost money?

This. Sell and have nothing more to do with it.

No. Most people pay for people to manage their investments on their behalf. If she wanted you to manage it, she should have asked and paid you for your services.

No, she doesn't have a point and is behaving like an ungrateful cow.

She thinks it’s ok to sit on her arse and you’re the one doing all the research etc? And she does nothing? I don’t think so. How would she have reacted if her stock had plummeted and she’d lost all her investment? Does she not care that it would stress you out big time?

If she was that keen she’s have spoken with you about it surely. I don’t think she knows what all’s involved.

If you speak about this further and decide you want to trade for her at the same time as your own trading, you could take some of the current profits she’s accumulated and invest with that the way you do your own money, because although it’s her money it’s money she never had to start with, so if it goes down the tubes it’s not a big deal. She still has her initial investment plus some profit. You don’t have to be nervous and worrying that you’ve lost her money.

And if it increases great.

I agree with others that she’s completely out of order.

She’s annoyed that you’ve made more money than her doing riskier trades; but I bet she’d have been fuming if you’d lost all her money doing trades.

Give her control over her own account and wash your hands of it.