Historical Multiple Security compares the performance of several securities on one chart, or as a grid of small charts with a synchronized crosshair.

**HMS** follows its [link group](/help-center/roxom-pro/getting-started/linking-windows).

**Aliases:** `COMP`, `COMPARE`

  <video autoPlay muted loop playsInline className="w-full" poster="/images/help-center/roxom-pro/clips/hms.jpg" src="/images/help-center/roxom-pro/clips/hms.mp4" aria-label="HMS walkthrough: typing NVDA HMS to open Historical Multiple Security, then using its main controls">

## How to use HMS

| You type | Result |
|---|---|
| `NVDA HMS` <kbd>ENTER | Starts a comparison with Nvidia. |

## Options

From the window menu: **Add ticker**, **TIMEFRAME**, **METRIC** (price, % change and more), **VIEW** (one chart or a grid) and **Export CSV**.

## Window menu

Open **▾** in the title bar (or right-click the window) for HMS's options:

| Menu item | Shortcut |
|---|---|
| Add ticker… |  |
| **Timeframe** | |
| 1 Month | `1
` |
| 3 Months | `2
` |
| 6 Months | `3
` |
| YTD | `4
` |
| 1 Year | `5
` |
| 5 Years | `6
` |
| All Time | `7
` |
| **Metric** | |
| Change % |  |
| $ Value |  |
| **View** | |
| Overlay |  |
| Side-by-side |  |
| Export CSV |  |

The menu also has the standard window actions: change function, change security, link, open a copy, zoom and close.

## Plan limits

| | Guest | Free | Pro |
|---|---|---|---|
| Securities shown | 2 | 4 | All |

See [Plans and access](/help-center/roxom-pro/getting-started/plans-and-access).

## Related functions

**GP: Chart**
Price graph

**GR: Ratio Analysis**
Pair ratio · correlation · regression

**GF: Graph Fundamentals**
Chart company fundamentals over time and compare across companies

## FAQ

**What does HMS do?**

    Compare securities on one chart.

**How do I open HMS?**

    Type `HMS` on the command line and press ENTER. To open it in a new window, type `+HMS` or press ⇧ENTER. Add a ticker first to load a specific security, for example `NVDA HMS`.

**How many securities can I compare?**

    Guests 2, free accounts 4 and Pro as many as you like.