Execution Reports - Fills - Paxos Documentation

Execution Reports – Fills

Paxos sends fill Execution Reports as orders match against the order book:

Partial Fill (ExecType (150) = 1) — Sent for each individual fill. lastShares (32) and LastPx (31) contain the fill quantity and price.
Filled (ExecType (150) = 2) — Sent when the order is completely filled. LeavesQty (151) = 0.

Market buy order executions are captured in Partial Fill messages. The Filled message for market buys is a summary confirming the order is closed — it does not represent an additional execution.

Standard FIX Fields

Tag	Field	When Present	Notes
`8`	BeginString	Always	Standard FIX header
`9`	BodyLength	Always	Standard FIX header
`35`	MsgType	Always	`8` (Execution Report)
`49`	SenderCompID	Always	Standard FIX header
`56`	TargetCompID	Always	Standard FIX header
`34`	MsgSeqNum	Always	Standard FIX header
`52`	SendingTime	Always	Standard FIX header

Standard FIX Trailer

Tag	Field	When Present	Notes
`10`	CheckSum	Always

Response Fields

Partial Fill
Filled

ExecType (150) = 1, OrdStatus (39) = 1 (Partially Filled). LeavesQty (151) > 0.Always Present

Tag	Field	When Present	Notes
`54`	Side	Always	`1` = Buy, `2` = Sell
`150`	ExecType	Always	`1` (Partially Filled)
`32`	lastShares	Always	Fill quantity for this execution
`109`	ClientID	Always
`1`	Account	Always
`31`	LastPx	Always	Fill price for this execution
`151`	LeavesQty	Always	Remaining unfilled quantity
`60`	TransactTime	Always
`58`	Text	Always
`20`	ExecTransType	Always	`0` (New)
`55`	Symbol	Always	Currency pair
`17`	ExecID	Always
`14`	CumQty	Always	Total filled quantity so far
`11`	ClOrdID	Always
`44`	Price	Always
`6`	AvgPx	Always	Average fill price
`40`	OrdType	Always	`1` = Market, `2` = Limit, `3` = Stop Market, `4` = Stop Limit
`39`	OrdStatus	Always	`1` (Partially Filled)
`37`	OrderID	Always
`381`	GrossTradeAmt	Always	lastShares (`32`) * LastPx (`31`)
`59`	TimeInForce	Always	`1` = GTC, `3` = IOC, `4` = FOK, `6` = GTT

Conditional

Tag	Field	When Present	Notes
`12`	Commission	When charged	Commission paid
`13`	CommType	When charged	`3` (Absolute Value)
`38`	OrderQty	Limit and market sell orders	Base quantity
`152`	CashOrderQty	Market buy orders	Fiat notional
`18`	ExecInst	Post-only orders	`6` (Post-Only)
`5851`	LiquidityInd	When available	`1` = Add, `2` = Remove
`126`	ExpireTime	GTT orders	`YYYYMMDD-HH:MM:SS` format

Brokerage Clients

Tag	Field	When Present	Notes
`5047`	AllocBrokerAccountID	Brokerage clients	IdentityAccountId
`50`	SenderSubID	Brokerage clients	IdentityId
`5074`	FundCommissionOption	Brokerage clients
`5000`	RecipientProfileId	Brokerage clients	ProfileID that receives settled currency

Optional

Tag	Field	When Present	Notes
`2362`	SelfMatchPreventionID	If enabled	Prevents self-matching. Up to 36 characters. Requires additional permissions.

ExecType (150) = 2, OrdStatus (39) = 2 (Filled). LeavesQty (151) = 0.Always Present

Tag	Field	When Present	Notes
`54`	Side	Always	`1` = Buy, `2` = Sell
`150`	ExecType	Always	`2` (Filled)
`32`	lastShares	Always	Fill quantity for this execution
`109`	ClientID	Always
`1`	Account	Always
`31`	LastPx	Always	Fill price for this execution
`151`	LeavesQty	Always	`0`
`60`	TransactTime	Always
`58`	Text	Always
`20`	ExecTransType	Always	`0` (New)
`55`	Symbol	Always	Currency pair
`17`	ExecID	Always
`14`	CumQty	Always	Total filled quantity
`11`	ClOrdID	Always
`44`	Price	Always
`6`	AvgPx	Always	Average fill price
`40`	OrdType	Always	`1` = Market, `2` = Limit, `3` = Stop Market, `4` = Stop Limit
`39`	OrdStatus	Always	`2` (Filled)
`37`	OrderID	Always
`381`	GrossTradeAmt	Always	lastShares (`32`) * LastPx (`31`)
`59`	TimeInForce	Always	`1` = GTC, `3` = IOC, `4` = FOK, `6` = GTT

Conditional

Tag	Field	When Present	Notes
`12`	Commission	When charged	Commission paid
`13`	CommType	When charged	`3` (Absolute Value)
`38`	OrderQty	Limit and market sell orders	Base quantity
`152`	CashOrderQty	Market buy orders	Fiat notional
`18`	ExecInst	Post-only orders	`6` (Post-Only)
`99`	StopPx	Stop orders only	Only when OrdType is `3` or `4`
`5851`	LiquidityInd	When available	`1` = Add, `2` = Remove
`126`	ExpireTime	GTT orders	`YYYYMMDD-HH:MM:SS` format

Brokerage Clients

Tag	Field	When Present	Notes
`5047`	AllocBrokerAccountID	Brokerage clients	IdentityAccountId
`50`	SenderSubID	Brokerage clients	IdentityId
`5074`	FundCommissionOption	Brokerage clients
`5000`	RecipientProfileId	Brokerage clients	ProfileID that receives settled currency

Optional

Tag	Field	When Present	Notes
`2362`	SelfMatchPreventionID	If enabled	Prevents self-matching. Up to 36 characters. Requires additional permissions.

See also: Execution Reports - Cancels and Execution Reports - Rejected and Expired.