orrivlin issues

Results 2 issues of


                                            orrivlin

![combined_return_plot](https://user-images.githubusercontent.com/46422351/50738963-fe1ae500-11e1-11e9-9cf1-084f067ef79f.png)

![real_return_plot](https://user-images.githubusercontent.com/46422351/50738799-a29c2780-11e0-11e9-82f4-e1ac46ee1a3e.png)