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ALDERMERE / LEARNING SERIES

Execution: from an instruction to a reconciled result

Compare completed and partial outcomes, trace the order lifecycle and build a more useful execution review.

Concepts · Worked example · Self-check

A financial market display

Separate price control from completion

A market order seeks execution at available prices; its execution price is not guaranteed. A buy limit order sets a maximum purchase price, but it may remain partly or completely unfilled. These are different trade-offs, not a universally better and worse choice.

Reference: Investor.gov · Understanding Order Types

The reference explains securities order types. Digital-asset venues can use different rules, supported instructions and terminology; always distinguish a general concept from a venue-specific implementation.

Compare two fictional outcomes

Suppose five units are offered at 100.00 and five more at 101.00. A request to buy eight units without a price limit would, in this static example, cost 803.00, averaging 100.375 before fees.

A buy limit of 100.00 could fill five units at that price, leaving three unfilled. Whether the remainder waits or is cancelled depends on the instruction and venue rules. A lower average price on a partial fill is not directly comparable with a completed order.

The lesson is to report both price and completion. Neither result alone explains whether the original objective was met.

Follow the full lifecycle

  1. Before sending: record the intended asset, quantity, price condition, account and approval.
  2. After sending: distinguish acknowledgement from execution; an accepted instruction is not a fill.
  3. During execution: track partial fills, remaining quantity and any cancellation request.
  4. After execution: compare fill records, fees and account changes; investigate any mismatch.

This is a conceptual workflow, not a statement that Aldermere operates a particular trading platform. It helps a reader identify which information is needed at each handover.

Build a useful review record

  • The original objective and the benchmark chosen before evaluation.
  • The requested quantity, completed quantity and elapsed time.
  • Average execution price and separately identified charges.
  • Unresolved exceptions and who is responsible for following them up.

Do not silently change the benchmark after seeing the result. A review should make its assumptions visible so another person can reproduce the reasoning.

Check your understanding

An order is acknowledged. Has the trade completed?

Not necessarily. You still need execution records and the final status of the remaining quantity. Acknowledgement and completion describe different stages.

Can a favourable price hide an incomplete outcome?

Yes. In the example, five units at 100.00 look cheaper than eight at 100.375, but three requested units remain unfilled. Report both facts.

Educational material with fictional examples, not live market data or personalised investment advice. Examples describe concepts and do not claim specific Aldermere systems or performance.

ALDERMERE / PERSPECTIVES

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