---
title: SecurityMassStatus
seo:
  title: SecurityMassStatus | FIX Market Data
  description: "FIX market data SecurityMassStatus reference: field layout,
    repeating groups, supported values, and message-specific behavior."
sidebar:
  label: SecurityMassStatus
---
`MsgType(35)=SecurityMassStatus(CO)`

Direction: **Exchange to client**.

Report matching instruments and their trading statuses in one repeating group.

## Field Layout

See [FIX Message Layouts](/reference/fix-message-layouts) for field ordering and presence rules.

| Field | Type | Presence | Behavior |
| --- | --- | --- | --- |
| `SecurityStatusReqID(324)` | [`STRING`](/reference/fix-data-types#string) | Required |  |
| `NoRelatedSym(146)` | [`NUMINGROUP`](/reference/fix-data-types#numingroup) | Required | <span style="overflow-wrap:anywhere">Repeating group. An empty result is sent with NoRelatedSym(146)=0 and no instrument entries.</span> |

### NoRelatedSym(146) Entries

Keep each entry's fields in the order shown.

| Field | Type | Presence | Behavior |
| --- | --- | --- | --- |
| `Symbol(55)` | [`STRING`](/reference/fix-data-types#string) | Required |  |
| `SecurityTradingStatus(326)` | [`INT`](/reference/fix-data-types#int) | Required | Supported values:<br/><code style="overflow-wrap:anywhere">SecurityTradingStatus(326)=TRADING_HALT(2)</code><br/><code style="overflow-wrap:anywhere">SecurityTradingStatus(326)=READY_TO_TRADE(17)</code> |