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NAS100 and US30 Lot Size: Calculate Index CFD Risk per Point
Size an index CFD using tick size, tick value, stop distance, and broker volume steps. Compare two hypothetical NAS100-style contracts with different point values.
By TickerAI
An index CFD's risk per lot depends on its broker-defined value per price point. A NAS100 or US30 label does not establish that one lot has the same dollar exposure across accounts or matches an exchange-traded futures contract.
Calculate from the exact symbol specification before interpreting a lot-size recommendation. The worked prices and contract settings below are hypothetical and do not represent a current index quote or any named broker's terms.
Identify the contract before the calculation
Record tick size, tick value, account currency, minimum volume, volume step, and the applicable profit calculation mode. MetaQuotes defines these fields in its symbol properties reference.
An index point is a one-unit move in the quoted index price. It is not necessarily one minimum tick. If a hypothetical contract permits 0.1 price increments, ten ticks make one full price point.
Also verify whether the listing is a cash-style CFD, a dated product, or something else. Trading sessions, financing, adjustments, and expiry can differ even when the underlying index name looks similar.
Convert ticks into cash per full point
Assume contract A has tick size 0.1 and tick value $0.10 per lot. One full point contains ten ticks, so the value per point per lot is $1.
Assume contract B has the same tick size but tick value $1 per lot. Its full-point value is $10. These contracts have tenfold different price exposure per lot under the example.
Cash per full point per lot = tick value ÷ tick size
Use the formula only with matching units and the relevant currency. If the tick value refers to the chosen volume already, do not multiply by that volume twice.
Work through a 50-point stop
Suppose a hypothetical long enters at 20,000 with a stop at 19,950. The distance is 50 full points, and the illustrative risk budget before costs is $100.
| Contract | Value per point per lot | Loss on one lot at the stop | Raw volume for $100 |
|---|---|---|---|
| A | $1 | $50 | 2.00 lots |
| B | $10 | $500 | 0.20 lots |
Both example positions have $2 of exposure per full point. Comparing only the displayed lots would hide that equivalence.
Round down to the permitted volume step and verify the minimum. If a minimum position exceeds the cash budget, changing the symbol or skipping can be preferable to pretending the budget still holds.
Add costs and gap scenarios separately
At $2 per full point, a three-point round-trip price cost is $6 under a model that has not already included it in the fills. Do not subtract that allowance again when analyzing actual-fill price P/L.
If a stop intended to exit after 50 points instead fills after a 75-point adverse move, the price loss becomes $150 before other charges. The original $100 sizing budget did not create a guaranteed exit price.
Check trading-session breaks and upcoming events when defining the holding plan. A chart level is not a promise of an executable quote throughout a closure or gap.
Margin is a different check
The collateral needed to support the order is not its stop-based loss estimate. MetaTrader's margin calculation documentation describes instrument-dependent calculation modes and broker settings.
Do not take a forex leverage formula and assume it covers every index CFD. Use the actual order preview and specification for collateral, then review price risk independently.
Check an index idea with TickerAI
TickerAI includes an indices scan preset and can request supported broker candles for symbols such as NAS100 and US30. The broker may use different names or suffixes, and an initial idea card can contain approximate lot estimates.
Ask for the resolved symbol, account, tick inputs, actual proposed order price, and rounded volume before execution. Compare the broker's estimated price loss with the assistant's arithmetic.
Use symbol-name checks, pip versus tick units, and entry-zone risk. Precise point values make a position understandable; they do not validate the market thesis or guarantee the loss budget.