How to Check Whether a MEXC Limit Order Has Been Partially Filled?

Understanding Order Status Indicators on MEXC

1. The platform displays real-time order status in the Open Orders section of the trading interface.

2. A status labeled Partially Filled means the order has executed for a portion of its original quantity but remains active for the remainder.

3. Users can verify this by checking the Filled Amount field, which shows the executed base asset volume alongside the Remaining Amount field indicating unfilled quantity.

4. The Average Fill Price reflects the weighted mean of all executed fills, distinct from the initial limit price.

5. Each fill generates a corresponding entry in the Order History tab with timestamp, executed price, and filled size.

Navigating the MEXC Trade History Panel

1. Accessing Trade History reveals chronological records of every completed execution tied to the order ID.

2. Multiple entries sharing the same Order ID confirm partial filling behavior across separate matching events.

3. The Price column may show variation between entries if market liquidity triggered executions at different levels within the spread.

4. The Time column provides microsecond-level precision, allowing users to reconstruct the sequence of fills.

5. Export functionality enables CSV download for external reconciliation or spreadsheet-based analysis of fill distribution.

Interpreting Real-Time Order Book Depth Data

1. Observing the Ask Side depth chart helps infer why partial fills occurred—thin liquidity above the limit price restricts full execution.

2. A visible gap between the top ask and the user’s limit price often correlates with incomplete fills when the order is placed as a maker.

3. Aggressive limit orders positioned inside the spread may trigger immediate partial matches against resting orders at varying price tiers.

4. Cumulative volume indicators adjacent to price levels assist in estimating how much of the order could realistically execute before hitting resistance.

5. Dynamic updates of bid-ask spreads during high volatility periods directly impact the probability and timing of subsequent partial fills.

Using MEXC API Responses for Programmatic Verification

1. The /api/v3/openOrders endpoint returns JSON objects containing executedQty, origQty, and status fields.

2. A value of PARTIALLY_FILLED in the status field is definitive confirmation independent of UI rendering delays.

3. Calculating executedQty / origQty * 100 yields the exact fill percentage, useful for algorithmic position sizing logic.

4. Websocket streams deliver instant executionReport messages with eventType = executionReport and executionType = TRADE.

5. Repeated executionReport messages referencing the same orderId indicate sequential partial fills across discrete matching cycles.

Frequently Asked Questions

Q: Does MEXC send email or SMS notifications for each partial fill? No. MEXC does not dispatch individual alerts per partial execution. Users must monitor the Open Orders or Trade History panels or implement webhook-based notification systems via the API.

Q: Can I cancel only the unfilled portion of a partially filled limit order? Yes. Canceling the order removes only the remaining quantity; already executed trades are irreversible and appear in Trade History.

Q: Why does the average fill price differ significantly from my limit price? This occurs when multiple takers match against your maker order at different prices due to fragmented liquidity or rapid price movement during execution windows.

Q: Is there a way to see the exact time each sub-fill occurred without exporting data? Yes. Hovering over the timestamp in the Trade History row displays millisecond-precision time in a tooltip, visible without external tools.