How do I close half of a position with Autoview?

Send c=position with q=50% on a venue that keeps positions, for example c=position b=long q=50%. Autoview reads q as a share of the open position, so 50% closes half. Without q, the whole position is closed.

What does q=1 do on a close?

A number without a percent sign is an amount, not a share. q=1 closes one unit or contract. Autoview does not trim it to the size of the position, so use a percentage when you mean part of what you hold.

Can I partially close on a spot exchange?

Not with c=position. On spot connectors such as Binance, Binance.US, Coinbase Advanced, Gemini, Gate.io, Kucoin, Bitget, HTX and Bybit spot, c=position stops with an unsupported feature error. On spot you hold a coin balance, not a position, so you sell part of it with a normal sell order.

Why does cm=1 give a sort method error?

When cm= is lower than the number of open positions, Autoview picks which ones to close with cmo=, and the default is oldest. Some venues do not return when a position was opened, so oldest and newest cannot work there. Add cmo=biggest, smallest, highest or lowest instead.

Partial closes by exchange

Autoview · Guide · Updated October 20, 2026

Scaling out means closing part of a trade and letting the rest run. In Autoview you do it with c=position and a q= that is a share of what you hold. This alert closes half of an open long:

c=position b=long q=50%

This page lists where that works, where c=position is refused, and the venue rules that change what the close does. It comes from the Autoview integrations code that runs on our servers today, read venue by venue.

How q= works on a close

A percentage is a share of the position. q=50% closes half, q=25% a quarter. Leave q= off and Autoview closes all of it, because the default is 100%.
The share is rounded down to whole order units. Autoview cuts a percentage down to the venue's smallest order size, which on futures is one contract. q=50% of 3 contracts closes 1. q=50% of a single contract rounds to 0: on Binance Futures nothing is closed and your log says so, and on Tradovate the order goes out for 0 contracts, so it cannot close anything. To close a 1-lot, use q=100% or a plain number.
A plain number is an amount. q=1 closes one unit or contract. Autoview sends the number as written and does not trim it to the size of your position, so use a percentage when you mean part of what you hold.
b= picks the side. b=long closes longs, b=short closes shorts. Without it, Autoview closes the matching positions on both sides.

Exchanges where a partial close works

On these venues c=position closes open positions, and q=50% closes half of each one it touches, rounded down to the venue's order size:

Alpaca
Binance Futures and Binance Delivery
Bitfinex (margin and derivatives)
Bitget Mix
Bybit (derivatives)
Capital.com
Charles Schwab
Crypto.com
Deribit
Gate.io Futures
HTX Linear, HTX Swap and HTX Futures
HyperLiquid
Kraken (margin positions) and Kraken Futures
Kucoin Futures
OANDA
OKX
TradeStation
Tradovate

Venue rules to know

Capital.com: a full close uses Capital.com's own close, which takes no size. Any other q= goes out as an offsetting order for that amount. On an instrument that only allows long (or only short) exposure, Capital.com rejects that offsetting order, so a partial close fails there while a full close still works. The Capital.com command reference has the rest.
Capital.com and Bybit, with sl= or tp= on the close: if the c=position alert also carries a stop loss, take profit or trailing stop (and on Bybit, px=), Autoview moves those orders on the open position instead of closing it. Keep the close alert free of them, or add edit=0.
Binance Futures: if the share you ask for rounds below the symbol's smallest order size, nothing is closed and your log says so.
Kraken: c=position closes margin positions. A spot coin balance is not a position, so it is not touched.
OANDA: the close goes out with OANDA's reduce-first position fill, so it shrinks the open position rather than opening a new one alongside it. Keep & off the close alert: on OANDA, c=position with an & closes nothing and only sets or moves the stops and targets on each open trade (OANDA command reference).

Exchanges where c=position is refused

These spot connectors stop the alert with an unsupported feature error when they see c=position:

Binance (spot) and Binance.US
Bitget (spot)
Bybit (spot)
Coinbase Advanced
Gate.io (spot)
Gemini
HTX (spot)
Kucoin (spot)

On spot you hold a coin balance, not a position. To take some profit, send a normal sell order for the amount you want to let go. The command reference covers how q= sizes a plain order.

Closing some positions but not others: cm= and cmo=

When more than one position matches, cm= caps how many get closed: cm=1 closes one. When cm= is lower than the number of matching positions, cmo= picks which ones, and the default is oldest. The choices are newest, oldest, highest, lowest, biggest, smallest and random.

Some venues do not report when a position was opened, so oldest and newest cannot work there. On those the alert stops with a "does not support sort method" error, and that includes the default. Add another cmo= value, such as cmo=biggest. This applies to:

Alpaca
Binance Futures and Binance Delivery
Bitfinex
Charles Schwab
Deribit
Gate.io Futures
HTX Linear, HTX Swap and HTX Futures
HyperLiquid

Test it once before you rely on it

Add d=1 to the alert first. Autoview writes what it would send to your log and places nothing, so you can check the size of the close against your position, and that it is not 0. When the log looks right, take d=1 off. The log guide shows where to look. To stop a repeated exit from opening a new position, see reduce-only orders by exchange. To scale out with several targets set at entry instead, see the & separator by exchange. To close and then go the other way, see close or reverse on an opposite signal.

Open the command reference