# Adjusting a daily log return for a cash inflow/outflow [closed]

If I had a portfolio with one stock with an initial value of 100 and the next day the stock gained 5 and I added 50 too, would I adjust the log return this way: ln [(155-50)/100]?

## closed as off-topic by LocalVolatility, Bob Jansen♦Jan 18 '17 at 19:48

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$$R = \ln \left( \frac{105 + 50}{100} \right)$$