FIX 4.1 : Indication of Interest <6> message

Structure | Related Messages


Indication of interest messages 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

55 Symbol Y
65 SymbolSfx N
48 SecurityID N
22 IDSource N
167 SecurityType N

Must be specified if a Future or Option. If a Future: Symbol <55>, SecurityType <167>, and MaturityMonthYear <200> are required. If an Option: Symbol <55>, SecurityType <167>, MaturityMonthYear <200>, PutOrCall <201>, and StrikePrice <202> are required.

200 MaturityMonthYear N

For Options or Futures to specify the month and year of maturity.

205 MaturityDay N

For Options or Futures and can be used in conjunction with MaturityMonthYear <200> to specify a particular maturity date.

201 PutOrCall N

For Options.

202 StrikePrice N

For Options.

206 OptAttribute N

For Options.

207 SecurityExchange N

Can be used to identify the security.

106 Issuer N
107 SecurityDesc N
54 Side Y

Side of Indication

Valid values:

1 = Buy

2 = Sell

7 = Undisclosed (for IOIs)

27 IOIShares Y
44 Price N
15 Currency N
62 ValidUntilTime N
25 IOIQltyInd N
24 IOIOthSvc N

Applicable only if advertised on public IOI service.

130 IOINaturalFlag N
199 NoIOIQualifiers N

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

=> 104 IOIQualifier N

Required if NoIOIQualifiers <199> > 0

58 Text N
60 TransactTime N
149 URLLink N

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

<MessageTrailer> Y