How to Calculate Lot Size for Amazon (AMZN): Shares, Lot Size and Position Sizing
BY TIOmarkets
|March 24, 2026When trading Amazon (AMZN) as a CFD, position size is expressed in lots rather than individual shares. Understanding how lots relate to shares, how to calculate the dollar value of a price move, and how to determine the required margin for a given position size are the three core calculations you need before placing a trade.
This guide covers each calculation step by step, with worked examples based on AMZN's confirmed contract specifications.
AMZN Contract Size: Shares per Lot
One standard lot of AMZN is 100 shares. The minimum trade size is 0.01 lots, which represents 1 share. Lot sizes scale linearly between these points.
The relationship between lots and shares is as follows. A 0.01 lot position holds 1 share. A 0.10 lot position holds 10 shares. A 0.50 lot position holds 50 shares. A 1.0 lot position holds 100 shares.
Every lot size calculation for AMZN starts with multiplying the lot size by 100 to find the number of shares in the position.
A lot size calculator can do it for you.
Dollar Value of a Price Move
Because AMZN is quoted in USD and settled in USD, the dollar value of a price move is straightforward to calculate for a USD account.
For a 1.0 standard lot position (100 shares), a $1.00 move in the AMZN share price produces a $100.00 change in position value. A $0.10 move produces a $10.00 change. A $0.01 move produces a $1.00 change.
For a 0.10 lot position (10 shares), a $1.00 move produces a $10.00 change. For a 0.01 lot position (1 share), a $1.00 move produces a $1.00 change.
The general formula is:
Dollar value of move = lot size × 100 shares × price move in USD
These figures apply to USD accounts. For accounts held in other base currencies, the position value is converted at the prevailing exchange rate.
Calculating Required Margin
The leverage available on AMZN is 1:20, which corresponds to a margin requirement of 5%. This means 5% of the full position value must be held as margin to open and maintain the trade.
The required margin formula is:
Required margin = lot size × 100 shares × current share price × 5%
Using a share price of $207 as an example:
For a 1.0 lot position (100 shares): 100 × $207 × 5% = $1,035 required margin. For a 0.10 lot position (10 shares): 10 × $207 × 5% = $103.50 required margin. For a 0.01 lot position (1 share): 1 × $207 × 5% = $10.35 required margin.
Because required margin is calculated on the current share price, it changes as AMZN's price moves. A higher share price requires more margin per lot. Always check the required margin inside the platform at the current price before placing a trade, particularly if AMZN has moved significantly since you last calculated.
Margin requirements are subject to change depending on market conditions and applicable regulatory requirements.
Position Sizing: How Much to Trade
Position sizing is the process of determining how many lots to trade based on the amount of risk you are willing to accept on the position. A structured approach keeps the potential loss on any single trade within a defined limit relative to account equity.
A common starting point is to define the maximum loss you are willing to accept if the trade reaches your stop loss level. This is your risk amount, typically expressed as a percentage of account equity or a fixed dollar figure.
The position sizing formula for AMZN is:
Lot size = risk amount ÷ (stop loss distance in dollars × 100 shares per lot)
Worked example:
Account equity: $5,000 Risk per trade: 1% of equity = $50 AMZN current price: $207 Stop loss: $5.00 below entry, at $202 Stop loss distance in dollars: $5.00
Lot size = $50 ÷ ($5.00 × 100) = $50 ÷ $500 = 0.10 lots (10 shares)
In this example, a 0.10 lot position with a $5.00 stop loss produces a maximum loss of $50, which is 1% of the $5,000 account. If the stop loss is hit and the position closes at $202, the loss on the trade is 10 shares × $5.00 = $50.
Checking the required margin for this position: 10 shares × $207 × 5% = $103.50. With $5,000 in equity, this position uses a small portion of available margin and leaves substantial room before a margin call would be triggered.
Adjusting for AMZN's Share Price
Because AMZN trades at a relatively high share price, the dollar value of even a small percentage move can be meaningful in absolute terms. A 1% move on a $207 share equals $2.07 per share, which on a 0.10 lot position (10 shares) represents a $20.70 change in position value.
This means stop loss distances need to be calibrated in dollar terms relative to the share price rather than as a fixed pip or point value. A $5.00 stop loss distance represents approximately 2.4% of a $207 share price. Checking that the stop loss distance reflects the typical price fluctuation of AMZN on your chosen timeframe is an important part of position sizing.
Average True Range (ATR) is a commonly used tool for this purpose. ATR measures the average range of price movement over a defined period and gives a practical basis for calibrating stop loss distances relative to normal volatility for a specific instrument and timeframe.
Using the TIOmarkets Calculators
TIOmarkets provides online calculators that automate these calculations. The margin calculator at tiomarkets.com/margin-calculator calculates the required margin for a given instrument, lot size, and account currency. The profit calculator at tiomarkets.com/profit-calculator estimates the profit or loss on a position based on entry and exit price and lot size.
These tools are useful for checking position parameters quickly before placing a trade, particularly when AMZN's share price has moved and the margin requirements have changed from your last calculation.
Trading Costs on AMZN
AMZN CFDs are available on the Standard account with spreads from 1.1 pips and no commission, on the Raw account with spreads from 0.0 pips and a $6 commission per round turn lot, and on the VIP Black account with spreads from 0.3 pips and no commission. Spreads are variable and typically higher than the minimum figures shown.
Overnight financing applies to AMZN positions held past the daily rollover. Check the current financing conditions inside the platform before holding AMZN positions overnight, as financing costs accumulate on positions held for extended periods and can be significant on longer-duration trades given AMZN's higher share price.
Trading AMZN at TIOmarkets
AMZN is available to trade as a CFD on MT4 and MT5. One standard lot is 100 shares, with a minimum trade size of 0.01 lots (1 share). Leverage is 1:20 (5% margin). Trading hours are Monday to Friday 16:30 to 23:00, with the market closed on Saturday and Sunday. AMZN is not eligible for unlimited leverage. The Nano account is not applicable to stock CFD instruments.
A Standard account is created automatically on registration. Raw and VIP Black accounts are opened separately via the client area. All accounts support hedging. A swap-free Islamic account is available: contact TIOmarkets for eligibility and instrument details.
FAQ
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TIOmarkets offers an exclusively execution-only service. The views expressed are for information purposes only. None of the content provided constitutes any form of investment advice. The comments are made available purely for educational and marketing purposes and do NOT constitute advice or investment recommendation (and should not be considered as such) and do not in any way constitute an invitation to acquire any financial instrument or product. TIOmarkets and its affiliates and consultants are not liable for any damages that may be caused by individual comments or statements by TIOmarkets analysis and assumes no liability with respect to the completeness and correctness of the content presented. The investor is solely responsible for the risk of his/her investment decisions. The analyses and comments presented do not include any consideration of your personal investment objectives, financial circumstances, or needs. The content has not been prepared in accordance with any legal requirements for financial analysis and must, therefore, be viewed by the reader as marketing information. TIOmarkets prohibits duplication or publication without explicit approval.
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