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Date/Time: Fri, 28 Aug 2026 23:46:34 +0000



Detached/Cancelled Child/Stop Orders

View Count: 23

[2026-08-28 16:09:09]
User643426 - Posts: 144
Attached order quantity increase is abandoned after a failed
modification, leaving the position under-protected
====================================================================

Sierra Chart version: 2922
Trade service: Rithmic Direct - DTC
Symbol: MNQU6.CME
Trade account: ACCOUNT-A
Date: 2026-08-26
Internal order IDs: 32349 (parent market order), 32350 (attached stop)

Note: the trade account identifier has been replaced with ACCOUNT-A
throughout this report and both attached exports. It is a live account on
the Rithmic Direct trade service under my username; happy to supply the
real identifier privately if it is needed to correlate against your logs.

SUMMARY
-------
1. A 10 contract market order filled in three partials (2 / 2 / 6).
2. The attached stop was auto-sent at quantity 2 after the first partial and
never reached 10.
3. Sierra queued the increase, attempted it twice, - both attempts failed because the order was not acknowledged by the trade service.
4. After the acknowledgment arrived, Sierra reconciled its own recorded intent down from 10 to 2 rather than retrying the
queued modification.
5. 3.2 seconds later, price reached the stop. Only 2 of the 10 contracts were closed.
6. The remaining 8 contracts were left with no protective order and no warning of any kind was presented.

SEQUENCE (from the attached Trade Activity Log export)
------------------------------------------------------
13:44:25.459056 Parent market order submitted, qty 10, with attached order
13:44:25.538390 Partial fill 2 of 10
13:44:25.538410 Auto-sent child from parent fill qty 2
13:44:25.538427 Partial fill 4 of 10
13:44:25.538440 Modifying of order is being delayed
(Increasing child order quantity from 2 to 4)
13:44:25.538445 Filled 10 of 10
13:44:25.538460 Removed 1 prior delayed modification due to later
modification (Increasing child order quantity from 2 to 10)
13:44:25.538852 Increasing child order quantity from 1 to 10 from parent
fill. Requested Price: 29299.25. Requested Quantity: 10
13:44:25.538856 Order modification failed (InternalOrderID) |
Still awaiting acknowledgment of new order. Unable to modify
13:44:25.538910 Delayed modification of order is being processed now
13:44:25.538913 Increasing child order quantity from 2 to 10 from parent fill
13:44:25.538918 Order modification failed (InternalOrderID) |
Still awaiting acknowledgment of new order. Unable to modify
13:44:25.568350 Rithmic Direct - DTC (New) qty 2
13:44:25.568436 Updating last modify Price and Quantity to current values
due to an external modification or other reason.
LastModifyPrice1: 29299.00, CurrentPrice1: 29299.00,
LastModifyQuantity: 10, CurrentQuantity: 2
13:44:28.756915 Stop filled, quantity 2. PositionQuantity 8.

The acknowledgment at .568350 arrived roughly 30 ms after the two
modification attempts. By then the delayed-modification queue had already
been drained by the two failures, so nothing remained to be applied.

QUESTIONS
---------
1. When a queued attached-order quantity increase fails because the order
has not yet been acknowledged, why is the modification not retried
once the acknowledgment is received?

2. Why is there no alert or warning when a working attached stop order
covers less quantity than the current position?

SEPARATE OBSERVATION, POSSIBLY UNRELATED
----------------------------------------
The failed modification logged at 13:44:25.538852 records
"Increasing child order quantity from 1 to 10" and
"Requested Price: 29299.25".

Neither value corresponds to this order. Order 32350 was priced at
29299.00, and its parent filled in a 2 / 2 / 6 sequence, so there was
never a quantity of 1. Those values match a different account's order
placed in the same instant.

The second attempt at .538913 used the correct values for this order, so
nothing incorrect was sent to the trade service. I am not certain whether
this indicates a real cross-order issue or is simply how the message is
composed for display. Noting it in case it is meaningful.

FILES ATTACHED
--------------
ACCOUNT-A_2026-08-26_ORDERS_id32349_32350.txt Trade Activity Log, Orders,
filtered to these two order IDs
ACCOUNT-A_2026-08-26_FILLS_id32349_32350.txt Trade Activity Log, Fills,
filtered to these two order IDs

ORDERS 8/26/26:
ActivityType  DateTime  TransDateTime  Symbol  OrderActionSource  InternalOrderID  ServiceOrderID  OrderType  Quantity  BuySell  Price  Price2  OrderStatus  FillPrice  FilledQuantity  TradeAccount  OpenClose  ParentInternalOrderID  PositionQuantity  FillExecutionServiceID  HighDuringPosition  LowDuringPosition  Note  AccountBalance  ExchangeOrderID  ClientOrderID  TimeInForce  Username  IsAutomated
Orders  2026-08-26 13:44:25.459052  2026-08-26 13:44:25.459051  MNQU6.CME  MNQU6.CME[M] #41 | User order entry | Last: 29308.75 | AOE=true | AOU=true. Attached Order  32350    Stop    Sell  2929875.0000000    Pending Child-Client      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00      Day    N
Orders  2026-08-26 13:44:25.459056  2026-08-26 13:44:25.459055  MNQU6.CME  MNQU6.CME[M] #41 | User order entry | Last: 29308.75 | AOE=true | AOU=true  32349    Market  10  Buy      Order Sent      ACCOUNT-A  Open            40Tick.Stop.twconfig  0.00      Day    N
Orders  2026-08-26 13:44:25.536163  2026-08-26 13:44:25.536163  MNQU6.CME  Rithmic Direct - DTC (New)  32349  2873899431  Market  10  Buy      Pending Open      ACCOUNT-A  Open            40Tick.Stop.twconfig  0.00    32349.30401  Day    N
Orders  2026-08-26 13:44:25.538385  2026-08-26 13:44:25.538384  MNQU6.CME  Rithmic Direct - DTC (New)  32349  2873899431  Market  10  Buy      Open      ACCOUNT-A  Open            40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Orders  2026-08-26 13:44:25.538390  2026-08-26 13:44:25.538389  MNQU6.CME  Rithmic Direct - DTC (Partial fill)  32349  2873899431  Market  10  Buy      Open  2930900.0000000  2  ACCOUNT-A  Open      1458896      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Orders  2026-08-26 13:44:25.538403  2026-08-26 13:44:25.538402  MNQU6.CME  Modifying Attached Order from parent fill. Parent base price: 29309.00. New price: 29299.00. Requested Price: 29299.00. Requested Quantity: 0  32350    Stop    Sell  2929875.0000000    Pending Modify      ACCOUNT-A  Close  32349  2        40Tick.Stop.twconfig  0.00      Day    N
Orders  2026-08-26 13:44:25.538406  2026-08-26 13:44:25.538406  MNQU6.CME  Order modified internally. Modifying Attached Order from parent fill. Parent base price: 29309.00. New price: 29299.00. Requested Price: 29299.00. Requested Quantity: 0  32350    Stop    Sell  2929900.0000000    Pending Child-Client      ACCOUNT-A  Close  32349  2        40Tick.Stop.twconfig  0.00      Day    N
Orders  2026-08-26 13:44:25.538410  2026-08-26 13:44:25.538409  MNQU6.CME  Auto-sent child from parent fill  32350    Stop  2  Sell  2929900.0000000    Order Sent      ACCOUNT-A  Close  32349  2        40Tick.Stop.twconfig  0.00      Day    N
Orders  2026-08-26 13:44:25.538427  2026-08-26 13:44:25.538426  MNQU6.CME  Rithmic Direct - DTC (Partial fill)  32349  2873899431  Market  10  Buy      Open  2930912.5000000  4  ACCOUNT-A  Open    2  1458897      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Orders  2026-08-26 13:44:25.538440  2026-08-26 13:44:25.538436  MNQU6.CME  Modifying of order is being delayed. (Increasing child order quantity from 2 to 4 from parent fill. Using specified quantity of 4. Using LastModifyPrice1. Requested Price: 29299.00. Requested Quantity: 4)  32350    Stop  4  Sell  2929900.0000000    Order Sent      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538445  2026-08-26 13:44:25.538445  MNQU6.CME  Rithmic Direct - DTC (Filled)  32349  2873899431  Market  10  Buy      Filled  2930935.0000000  10  ACCOUNT-A  Open    4  1458898      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Orders  2026-08-26 13:44:25.538460  2026-08-26 13:44:25.538459  MNQU6.CME  Removed 1 prior delayed modification due to later modification. Modifying of order is being delayed. (Increasing child order quantity from 2 to 10 from parent fill. Using specified quantity of 10. Using LastModifyPrice1. Requested Price: 29299.00. Requested Quantity: 10)  32350    Stop  10  Sell  2929900.0000000    Order Sent      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538852  2026-08-26 13:44:25.538851  MNQU6.CME  Increasing child order quantity from 1 to 10 from parent fill. Using specified quantity of 10. Using LastModifyPrice1. Requested Price: 29299.25. Requested Quantity: 10. Requested Price: 29299.25. Requested Quantity: 10  32350    Stop  2  Sell  2929900.0000000    Pending Modify      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538856  2026-08-26 13:44:25.538856  MNQU6.CME  Order modification failed (InternalOrderID) | Still awaiting acknowledgment of new order. Unable to modify  32350    Stop  2  Sell  2929900.0000000    Open      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538910  2026-08-26 13:44:25.538909  MNQU6.CME  Delayed modification of order is being processed now.  32350    Stop  10  Sell  2929900.0000000    Open      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538913  2026-08-26 13:44:25.538913  MNQU6.CME  Increasing child order quantity from 2 to 10 from parent fill. Using specified quantity of 10. Using LastModifyPrice1. Requested Price: 29299.00. Requested Quantity: 10. Requested Price: 29299.00. Requested Quantity: 10  32350    Stop  2  Sell  2929900.0000000    Pending Modify      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.538918  2026-08-26 13:44:25.538917  MNQU6.CME  Order modification failed (InternalOrderID) | Still awaiting acknowledgment of new order. Unable to modify  32350    Stop  2  Sell  2929900.0000000    Open      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.568350  2026-08-26 13:44:25.568339  MNQU6.CME  Rithmic Direct - DTC (New)  32350  2873899466  Stop  2  Sell  2929900.0000000    Pending Open      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00    32350.66622  Day    N
Orders  2026-08-26 13:44:25.568413  2026-08-26 13:44:25.568404  MNQU6.CME  Rithmic Direct - DTC (New)  32350  2873899466  Stop  2  Sell  2929900.0000000    Open      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N
Orders  2026-08-26 13:44:25.568436  2026-08-26 13:44:25.568435  MNQU6.CME  Updating last modify Price and Quantity to current values due to an external modification or other reason. LastModifyPrice1: 29299.00, CurrentPrice1: 29299.00, LastModifyQuantity: 10, CurrentQuantity: 2  32350  2873899466  Stop  2  Sell  2929900.0000000    Open      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N
Orders  2026-08-26 13:44:28.756909  2026-08-26 13:44:28.756908  MNQU6.CME  Rithmic Direct - DTC (New)  32350  2873899466  Stop  2  Sell  2929900.0000000  2929900.0000000  Open      ACCOUNT-A  Close  32349  10        40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N
Orders  2026-08-26 13:44:28.756911  2026-08-26 13:44:28.756910  MNQU6.CME  Updating last modify Price and Quantity to current values due to an external modification or other reason. LastModifyPrice1: 29299.00, CurrentPrice1: 29299.00, LastModifyQuantity: 2, CurrentQuantity: 2  32350  2873899466  Stop  2  Sell  2929900.0000000  2929900.0000000  Open      ACCOUNT-A  Close  32349          40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N
Orders  2026-08-26 13:44:28.756915  2026-08-26 13:44:28.756915  MNQU6.CME  Rithmic Direct - DTC (Filled)  32350  2873899466  Stop  2  Sell  2929900.0000000  2929900.0000000  Filled  2929900.0000000  2  ACCOUNT-A  Close  32349  10  1459011      40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N

Fills 8/26/26:
ActivityType  DateTime  TransDateTime  Symbol  OrderActionSource  InternalOrderID  ServiceOrderID  OrderType  Quantity  BuySell  Price  Price2  OrderStatus  FillPrice  FilledQuantity  TradeAccount  OpenClose  ParentInternalOrderID  PositionQuantity  FillExecutionServiceID  HighDuringPosition  LowDuringPosition  Note  AccountBalance  ExchangeOrderID  ClientOrderID  TimeInForce  Username  IsAutomated
Fills  2026-08-26 13:44:25.538393  2026-08-26 13:44:25.000000  MNQU6.CME  Rithmic Direct - DTC (Partial fill)  32349  2873899431  Market  2  Buy      Open  2930900.0000000  2  ACCOUNT-A  Open    2  1458896      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Fills  2026-08-26 13:44:25.538430  2026-08-26 13:44:25.000000  MNQU6.CME  Rithmic Direct - DTC (Partial fill)  32349  2873899431  Market  2  Buy      Open  2930925.0000000  4  ACCOUNT-A  Open    4  1458897      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Fills  2026-08-26 13:44:25.538449  2026-08-26 13:44:25.000000  MNQU6.CME  Rithmic Direct - DTC (Filled)  32349  2873899431  Market  6  Buy      Filled  2930950.0000000  10  ACCOUNT-A  Open    10  1458898      40Tick.Stop.twconfig  0.00  2873899431  32349.30401  Day    N
Fills  2026-08-26 13:44:28.756919  2026-08-26 13:44:28.000000  MNQU6.CME  Rithmic Direct - DTC (Filled)  32350  2873899466  Stop  2  Sell  2929900.0000000  2929900.0000000  Filled  2929900.0000000  2  ACCOUNT-A  Close  32349  8  1459011  2931025.0000000  2929900.0000000  40Tick.Stop.twconfig  0.00  2873899466  32350.66622  Day    N
attachmentACCOUNT-A_2026-08-26_ORDERS_id32349_32350.txt - Attached On 2026-08-28 16:05:57 UTC - Size: 7.19 KB - 3 views
attachmentACCOUNT-A_2026-08-26_FILLS_id32349_32350.txt - Attached On 2026-08-28 16:06:22 UTC - Size: 1.39 KB - 2 views

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