Multiple shots were opened in the same directionGold orderWhen adding up the numbers of hands, the total position size can be obtained. Afterwards, we will look at the opening price, margin, and profit/loss of each order. Splitting orders into three or putting them in one will not make the total market exposure shrink out of thin air.

First, add up the number of hands

Assuming you have established buy positions for 0.1 lots, 0.2 lots, and 0.3 lots of London gold in sequence.

The total position is 0.6 lots.

Calculated at 100 ounces per lot of London gold, 0.6 lots correspond to a price exposure of 60 ounces.

How much does the account change for every $1 price change

0.6 lots correspond to 60 ounces, so for every $1 change in gold price, the theoretical floating amount is about $60.

If three orders are placed at different prices, the profit and loss per transaction will be different, but the sensitivity of the entire account to subsequent $1 price changes is mainly determined by the total number of lots.

How to calculate the average warehouse building price for multiple orders

If the number of lots is different, you cannot simply add up several prices and divide by the order quantity. A more reasonable approach is to weight based on the number of hands.

For example, if 0.1 lots buy at $4300, 0.2 lots buy at $4310, and 0.3 lots buy at $4320, the weighted average price needs to be calculated based on their respective lots.

The average price obtained in this way is closer to the overall cost position of the entire position.

What is the significance of placing separate orders

Building separate positions allows you to gradually enter at different prices, and also facilitates closing positions in batches or setting different stop losses for different orders in the future.

Its disadvantage is also very obvious: when there are too many orders, it is easy to only focus on one profitable order and ignore the total risk of all orders combined.

Don't miss the reverse position when looking at the total risk

If there are still sell positions in the account, the total number of open positions and net direction need to be viewed separately. Buying 1 lot and selling 1 lot does not mean 'no orders', but rather forms a portfolio of positions in opposite directions, which may still result in spreads and holding fees.

When managing accounts in practice, I suggest first looking at the total number of orders, and then checking the net value and prepayment ratio. The order quantity is only the number of lines on the interface, and the total number of lots is closer to the size of the warehouse.

Multiple orders in the same direction need to be merged first to check the total number of lots

Assuming you first buy 0.2 lots of London gold, then buy 0.3 lots, and add 0.5 lots. Although the account shows three orders, the total directional exposure has reached 1 lot. London gold is 100 ounces per lot, so the total of the three orders corresponds to 100 ounces.

If the overall gold price changes in an unfavorable direction by $1 and other expenses are ignored, the theoretical fluctuation of total holdings is about $100. Many people may think that 'each order is not big', but the real determinant of account risk is the total number of lots added up.

What is the average opening price after multiple warehouse additions

The warehousing prices for different orders vary, and the overall average cost can be estimated using a weighted method based on the number of lots. For example, if 0.2 lots buy at 4300 and 0.3 lots buy at 4310, it is not possible to simply add the two prices and divide by 2 because the number of lots is different.

A more reasonable approach is to add 4300 × 0.2 to 4310 × 0.3, and then divide by the total number of lots 0.5. The price obtained in this way is closer to the weighted average opening level of this group of positions. Trading terminals often display by order, and doing a weighted calculation during self review will make it easier to understand the overall position of the position.

Why does adding positions in the same direction lead to a rapid increase in risk

Every new order in the same direction expands the price exposure. When the market follows the direction of holdings, profit changes will be faster; When running in reverse, losses will also accelerate.

Especially in a state of floating losses, if you continue to increase your position just to bring the average opening price closer to the current price without setting a total lot limit in advance, your position may rapidly expand after a few operations. The average price looks' better ', but the total risk borne by the account is higher.

The margin should also be based on the total position

The current margin for London gold is USD 1,000 per lot. 0.2 lots takes up about USD 200, 0.3 lots about USD 300, and 0.5 lots about USD 500, still totaling around USD 1,000. If the account also holds silver or positions in other directions, these must also be included in used margin.

So when judging "can I still open a position", it is not appropriate to look only at how much margin the next order requires. Looking first at total lots, equity and available margin before deciding whether to add positions will be closer to the real account state.

Set a maximum total lot size for yourself

Rather than deciding on the spot each time you place an order, I recommend setting a total position cap for a single instrument before trading. For example, if you plan to hold no more than 0.5 lots, then no matter how many orders it is split into, stop adding once the total reaches 0.5 lots. This avoids the situation where "you add just a little each time and end up with an ever-larger position".

Risk warning: continuously adding to positions will amplify the impact of price fluctuations on the account. Before each new position, recalculate total lots and the loss you can bear.

实际管理账户时，我更建议先看所有订单合计手数，再看净值和预付款比例。订单数量只是界面上的行数，总手数才更接近仓位大小。

多张同方向订单要先合并看总手数

假设你先买入0.2手伦敦金，随后又买入0.3手，再追加0.5手。虽然账户里显示三张订单，总方向敞口已经达到1手。伦敦金每手100盎司，所以三张订单合计对应100盎司。

如果金价整体向不利方向变化1美元，忽略其他费用时，总持仓理论浮动约100美元。很多人会觉得“每张单都不大”，但真正决定账户风险的是加起来之后的总手数。

多次加仓后平均建仓价怎么看

不同订单的建仓价格不一样，可以用手数加权的方法估算整体平均成本。比如0.2手在4300买入、0.3手在4310买入，不能简单把两个价格相加再除以2，因为两笔手数不同。

更合理的思路是：4300×0.2加4310×0.3，再除以总手数0.5。这样得到的价格更接近这组仓位的加权平均建仓水平。交易终端往往按单显示，自己复盘时做一次加权计算，会更容易理解整体仓位处在什么位置。

为什么同方向加仓会让风险上升得很快

每新增一笔同方向订单，都在扩大价格敞口。行情顺着持仓方向运行时，盈利变化会更快；反向运行时，亏损同样会加速。

尤其在浮亏状态下继续加仓，如果只是为了把平均建仓价拉近当前价格，却没有预先设定总手数上限，仓位可能在几次操作后迅速扩大。平均价看起来“更好看”，账户承担的总风险却更高。

保证金也要按总仓位看

伦敦金当前保证金为1000美元/手。0.2手约占200美元，0.3手约占300美元，0.5手约占500美元，合计仍是约1000美元。账户还有白银或其他方向仓位时，也要一起纳入已用预付款。

所以判断“还能不能继续开仓”，不适合只看下一张订单需要多少保证金。先看总手数、净值和可用预付款，再决定是否增加仓位，会更接近真实账户状态。

给自己设一个总手数上限

比起每次下单临时决定，我更建议在交易前给单一品种设定总仓位上限。例如计划最多只持有0.5手，那么无论拆成几张单，总数到了0.5手就停止继续增加。这样能避免“每次只加一点，最后越加越大”的情况。

风险提示：连续加仓会扩大价格波动对账户的影响。每次新增仓位前应重新计算总手数和可承受亏损。