> For the complete documentation index, see [llms.txt](https://docs.tactyc.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tactyc.io/portfolio-management/investments-table/time-machine.md).
# Time Machine
The Time Machine feature enables you to rollback the clock to a specific point in the fund's life and evaluate portfolio company metrics (IRRs, MOICs) as of that point.
### How to work with the time machine
* Go to **Investments**
* Click on **Time Machine** on the top right header
* Set the clock date to a historical month
* All values in the investment table will automatically re-calculate and show data as of the selected month.
### **How to to know when time machine is active?**
When the time machine is in effect, you will see **red button** on the investments table signifying that the time machine is active.
### How to turn off the time machine?
* Click the red **Time Machine Active** button
* Click on **Reset to today**
The time machine will now be turned off.
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