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Implied Spread Position
The Implied Spread Positions setting controls whether T4 displays the net implied position for spread markets that are in ByPortfolio or ByAccount risk mode. When enabled, T4 will show the calculated implied position for strategies that involve spreads (for example, calendar spreads or inter-commodity spreads). This helps traders see their combined exposure in related markets in one place rather than just individual legs.
See below: in ByPortfolio, we went long the March–May ZS calendar spread. Implied Spread Position is turned on and shows its own PnL calculation, along with a long net position in the Contract Window. The legs (March, May) still show their net positions. Implied Spread Positions can be denoted by the parentheses around the number.
See below: Implied Spread Positions are turned off. The actual market for the March–May calendar spread no longer shows a net position, but the legs still show a net position. There is no spread position PnL calculation, only each leg of the calendar spread.
To enable Implied Spread Positions, go to the Main Properties found in the main bar (which may be grey or black) in T4. On the page that comes up, scroll down and enable Implied Spread Positions (or type “Implied Spread Positions” in the search bar). Make sure to save. Implied Spread Positions will now show.

