> ## Documentation Index > Fetch the complete documentation index at: https://tbignite.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Symbols > Your firm-wide instrument catalog - trading hours, costs, and contract details, plus the Exchanges sub-tab. The **Symbols** tab is your firm-wide instrument catalog - every tradable instrument, its trading hours, costs, and contract details. It has two sub-tabs: **Symbols** (the catalog) and **Exchanges** (enable additional exchanges such as Nasdaq). > [!NOTE] > > **Where it lives:** Sidebar → **Proptech Configuration** → **Symbols**. > [!WARNING] > > **All changes apply at end of day (5–6 PM EST) - never immediately.** Midday changes would disrupt live accounts mid-trade. An urgent midday change requires reaching out to Tickblaze on Slack; it is handled case by case, with no guarantee. ## The Symbols catalog ![Symbols catalog](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/symbols-catalog.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=667010f814fc0e248bddd0e38b00b613) The Symbols catalog - every firm-wide instrument with its trading week, off-times, multiplier, and commissions. When a firm is first provisioned, the catalog is **empty** - you add symbols yourself. Tickblaze provides a recommended starter set to begin from. Each row holds: | Column | Meaning | | - | - | | Symbol / Name | The ticker and display name (for example `ES`, `GC`, `6A`). | | Asset class | `FUTURES` or `STOCKS`. | | Venue | The exchange the symbol trades on (CBOT, CME, NYMEX, COMEX, Nasdaq). | | Trading week | When the trading week opens and closes (for example `Sun 18:00 → Fri 17:00`). Edit with the pencil. | | Off-times | A recurring daily window when the symbol is not tradable (for example `17:00–18:00`). Edit with the pencil. | | Multiplier | The contract multiplier per unit - generally `1`. | | Comm/Fill | Commission charged per fill. | | Comm/Order | Commission charged per order (most firms leave this blank - see below). | | Actions | Delete the symbol from your firm. | At the top of the grid: **Search**, **Bulk edit**, **Delete symbols**, **Save** (commits inline edits), and **+ Add symbol**. ## Adding a symbol Click **+ Add symbol** and fill in its identifiers (Symbol, Name), Asset class, Venue, Trading week, Off-times, Multiplier, Comm/Fill, and Comm/Order. Once saved, the symbol is available firm-wide. ## Trading week The **Trading week** is the overall window when trading opens and closes each week - the top-level schedule you give your traders. Click the pencil to set when the week **opens** and when it **closes** (for example, stocks might open Monday 9:30 AM EST and close Friday 4:00 PM EST; CME futures run `Sun 18:00 → Fri 17:00`). ![Trading week selection](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/trading-week-selection.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=ca0cec3d1383171b0ac8013f50ae3e6a) Setting the firm-wide trading week - when the week opens and when it closes. ## Off-times **Off-times** are recurring windows within the week when a symbol is **not** tradable (for example a daily `17:00–18:00` maintenance break). They are also your operational lever for **holidays and early closes** - adjust them ahead of the day and verify the next morning. ![Off-times](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/off-timings.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=acdca74e2db06d1ee357d6f855551aa6) Off-times for an exchange - recurring daily windows when trading is paused. ## Field details > [accordion] Multiplier > > The contract multiplier per unit. For Nasdaq stocks this is generally **1** - whatever margin the account has is what the trader can purchase. > [accordion] Commission per fill (Comm/Fill) > > How much commission to charge per share or contract **filled**. For example, `0.05` charges the trader \$0.05 each time a share is filled. > [accordion] Commission per order (Comm/Order) > > Commission charged per order. **Most prop firms leave this blank** and use Comm/Fill instead - it is available if you need it. ## Bulk editing To change the same field across many symbols at once, select the rows, click **Bulk edit**, and choose the field (Trading week, Off-times, Multiplier, Comm/Fill, or Comm/Order). As across the platform, the **left side shows the setting you are changing and the right side shows the pending changes** - a running list of what will be applied. Review it, then click **Apply changes**. ![Bulk edit view](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/bulk-trading-week.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=65f2dfefb3793255532bcd3444030bcf) Bulk edit - the change on the left, the pending changes to be applied on the right. The same flow works for every editable field. A few more examples: > [accordion] Bulk edit - Off-times > > ![Bulk off-times](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/bulk-off-timings.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=0790d090592e01cc9d0abd8663cd2cc4) > > Applying an off-times change across many symbols at once. > [accordion] Bulk edit - Multiplier > > ![Bulk multiplier](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/bulk-multiplier.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=ba42cb9b7bd6ed4560dd6a6dc0272901) > > Applying a multiplier change across many symbols at once. > [accordion] Bulk edit - Commission per fill > > ![Bulk commission per fill](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/bulk-commission-per-fill.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=7afafcaf2cb0c232d27a8e187c2f28a7) > > Applying a commission-per-fill change across many symbols at once. > [accordion] Bulk edit - Commission per order > > ![Bulk commission per order](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/bulk-commission-per-order.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=5706f68ca75b4a86a1243a00f99a9645) > > Applying a commission-per-order change across many symbols at once. > [!WARNING] > > Bulk changes take a few minutes to push. Never refresh or cancel mid-apply - it can corrupt in-flight state. ## Exchanges sub-tab Switch to the **Exchanges** sub-tab to enable additional exchanges. Today this is **Nasdaq** (`XNAS`) for **stock trading** - thousands of stocks sit under it. ![Exchanges sub-tab](https://mintcdn.com/tbignite/OlHmB8MlUnxshCJj/images/symbols/exchanges-subtab.png?fit=max\&auto=format\&n=OlHmB8MlUnxshCJj\&q=85\&s=7571fe824255d1c2132189e7dfb301f5) The Exchanges sub-tab - enable Nasdaq and set its firm-wide trading settings. * **Enabled** - a new exchange starts **Disabled**. Click the **Disabled** button to enable it. * **Trading week / Off-times** - set the exchange's weekly open/close and off-windows (pencil icons). * **Multiplier** - generally `1` for Nasdaq. * **Comm/Fill** - the per-share commission (for example `0.05` = \$0.05 per share filled). * **Comm/Order** - per-order commission (most firms leave blank). * **Actions** - delete the exchange configuration. Click **Save** to commit. > [!NOTE] > > Currently supported exchanges: **CME** (futures - covers CBOT, COMEX, NYMEX) and **Nasdaq** (stocks). Need another exchange? Raise it with Tickblaze during onboarding. ## Firm-level vs challenge-level A symbol must exist here, **firm-wide**, before any challenge (The evaluation program an account is created under - its starting balance, profit target, and risk rules.) can use it. On [Challenges](https://tbignite.mintlify.site/challenges.md), the **Individual tradable symbols** section decides which symbols a specific challenge allows and holds the per-symbol, per-challenge overrides for **max order size** and **max position size**. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.