FIX 4.3 : Indications of Interest <6> message

Structure | Related Messages


Indication of interest messages are used to market merchandise which the broker is buying or selling in either a proprietary or agency capacity. The indications can be time bound with a specific expiration value. Indications are distributed with the understanding that other firms may react to the message first and that the merchandise may no longer be available due to prior trade.

Indication messages can be transmitted in various transaction types; NEW, CANCEL, and REPLACE. All message types other than NEW modify the state of the message identified in IOIRefID <26>.


Tag Field Name Req'd Comments
<MessageHeader> Y MsgType <35> = 6
23 IOIid Y
28 IOITransType Y

Required for Cancel and Replace IOITransType <28> messages

Component Block - <Instrument> Y

Insert here the set of "<Instrument>" (symbology) fields

54 Side Y

Side of Indication

Valid values:

1 = Buy

2 = Sell

7 = Undisclosed (for IOIs)

465 QuantityType N
27 IOIQty (formerly named: IOIShares prior to FIX 4.3) Y
423 PriceType N
44 Price N
15 Currency N
62 ValidUntilTime N
25 IOIQltyInd N
130 IOINaturalFlag N
199 NoIOIQualifiers N

Required if any IOIQualifiers <104> are specified. Indicates the number of repeating IOIQualifiers.

=> 104 IOIQualifier N

Required if NoIOIQualifiers <199> > 0

58 Text N
354 EncodedTextLen N

Must be set if EncodedText <355> field is specified and must immediately precede it.

355 EncodedText N

Encoded (non-ASCII characters) representation of the Text <58> field in the encoded format specified via the MessageEncoding <347> field.

60 TransactTime N
149 URLLink N

A URL (Uniform Resource Locator) link to additional information (i.e.

215 NoRoutingIDs N

Required if any RoutingType <216> and RoutingIDs <217> are specified. Indicates the number within repeating group.

=> 216 RoutingType N

Indicates type of RoutingID <217>. Required if NoRoutingIDs <215> is > 0.

=> 217 RoutingID N

Identifies routing destination. Required if NoRoutingIDs <215> is > 0.

Component Block - <SpreadOrBenchmarkCurveData> N

Insert here the set of "<SpreadOrBenchmarkCurveData>" (Fixed Income spread or benchmark curve) fields

219 Benchmark(Deprecated) N

(deprecated) For Fixed Income

<MessageTrailer> Y