Quote from Ripley:
New money coming into my fund is negatively affecting my fund performance.
This is so because if I'm holding onto a stock at an average price of $20, and when the new money is coming in, the stock maybe worth $25, and I would have to add more of that share at a higher price. Or on a profitable short position, I would be adding more onto a profitable position at a lower price.
How can I keep my performance up while adding new money coming into the fund. Any thoughts or ideas on this would be greatly appreciated.
If you are already long at $25, then adding more at $25 (proportional to your net inflow) should not affect your performance, except if it's an illiquid stock or market where slippage is an issue.
In terms of trading performance, there is really no such thing as being 'long from' a price. You are long at the last tick - trading is mark-to-market.
If the trade no longer makes sense at $25, you should be out of your whole position. If it makes sense at $25, it makes sense with the extra new capital that you just got given by an investor.