> For the complete documentation index, see [llms.txt](https://docs.candelacharts.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.candelacharts.com/investing/risk-and-portfolio-management/period-roi/faqs.md).

# FAQs

<details>

<summary>What does the “daily reference” mean in practice?</summary>

The indicator fetches a daily series for consistency. On markets that trade every day (e.g., crypto), “days” map one-to-one; on markets with non-trading days, the lookback counts daily bars (not calendar weekends/holidays).

</details>

<details>

<summary>Why is my 1Y ROI not exactly year-over-year on some symbols?</summary>

For instruments without seven-day trading, “365 daily bars” can cover more than 365 calendar days. The benefit is TF-consistency; if you need strict calendar math, set a custom days value appropriate for that market.

</details>

<details>

<summary>Can I use another source than Close?</summary>

Yes—use the **Source** input to compute ROI on your preferred series.

</details>

<details>

<summary>Does it repaint?</summary>

No. The ROI uses completed daily data; values update intrabar while a bar forms and lock after close.

</details>

<details>

<summary>How should I choose the right window?</summary>

Match the window to the decision you’re making: 1M for tactical momentum, 3–6M for rotation, 1Y for business-cycle context. Keep it consistent across comparisons.

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.candelacharts.com/investing/risk-and-portfolio-management/period-roi/faqs.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.