ShortSaleReason (FIX tag 853)

intFIX 4.4

ShortSaleReason (tag 853) is an int field defined in FIX 4.4. It appears in 1 message type, always optionally. It is an enumerated field with 6 defined values.

At a glance

Tag
853
Name
ShortSaleReason
Datatype
int
Dialects
FIX 4.4
Messages
1
Valid values
6

What the specification says

Reason for short sale

Descriptions are quoted from the FIX Orchestra sources under the Apache 2.0 licence.

A real message using tag 853

TradeCaptureReport · FIX 4.4
TagFieldWire valueMeaning
8BeginStringFIX.4.4
9BodyLength171
35MsgTypeAETrade Capture Report
49SenderCompIDBOARTEAM
56TargetCompIDCOUNTERPARTY
34MsgSeqNum2
52SendingTime20240101-12:00:00.000
571TradeReportIDEXAMPLE
570PreviouslyReportedNnot reported to counterparty
32LastQty1000000
31LastPx1.09210
75TradeDate20240101
60TransactTime20240101-12:00:00.000
552NoSides1 entry1repeating group
54Side1Buy
37OrderIDORD-10042
853ShortSaleReason0Dealer Sold Short
10CheckSum186
Edit and decode it yourself

Shown with | separators for readability. On the wire FIX uses SOH (0x01), an invisible control byte — and because BodyLength and CheckSum are computed over the actual bytes, the two forms have different checksums. Both are valid and both decode here.

Open in the full decoder →

Generated from the FIX 4.4 dictionary and verified at build time: it parses and validates with no issues. Open the decoder to try your own message.

Valid values

A value outside this list is not a parse error — the message still decodes — but validate() reports it as validate/value-not-in-enum.

ValueMeaningSymbolic name
0Dealer Sold ShortDEALER_SOLD_SHORT
1Dealer Sold Short ExemptDEALER_SOLD_SHORT_EXEMPT
2Selling Customer Sold ShortSELLING_CUSTOMER_SOLD_SHORT
3Selling Customer Sold Short ExemptSELLING_CUSTOMER_SOLD_SHORT_EXEMPT
4Qualified Service Representative (QSR) or Automatic Giveup (AGU) Contra Side Sold ShortQUALIFED_SERVICE_REPRESENTATIVE
5QSR or AGU Contra Side Sold Short ExemptQSR_OR_AGU_CONTRA_SIDE_SOLD_SHORT_EXEMPT

Where tag 853 appears

Requiredness is a property of the message, not of the field: the same tag can be optional in one message and conditionally required in another.

MessageMsgTypeRequirednessWhere in the message
TradeCaptureReportAEOptionaldirectly on the message body

Wire format

A whole number, optionally signed. Leading zeros are legal on the wire and are preserved in the raw value. @boarteam/fix parses the value as a number and reports parse/invalid-int when it does not lex as one; the raw string is kept either way.

Read tag 853 in TypeScript

decode.tsts
import { createFixEngine } from "@boarteam/fix";import { dictionary } from "@boarteam/fix-dict-fix44";const fix = createFixEngine(dictionary);const { message, issues } = fix.parse(raw);const shortSaleReason = message.fields[853]?.raw;// e.g. "0" — Dealer Sold Short// The dictionary also carries the labels:const label = fix.dictionary  .fieldByTag(853)  ?.enumValues?.find((e) => e.value === shortSaleReason)  ?.description;

Other int fields

Decode this in your own code

The same engine that produced the decoded example above is an Apache-2.0 npm package with zero runtime dependencies. It runs in Node and in the browser, and parse() returns problems as data instead of throwing.

npm i @boarteam/fix @boarteam/fix-dict-fix44