Risk Ledger / position registerSheet VA · CU
Purchase value / before costs
Record what the entry uses.
Quantity times price gives a purchase value. A separate funds figure can be subtracted from it, but that comparison cannot decide whether a purchase is appropriate.
Unit convention
One share is counted as a share; the invented price is CU per share. Multiplying cancels “share” and leaves CU.
- Quantity / input
- 80 shares
- Price / input
- 50 CU/share
- Purchase value
- 4,000 CUBefore costs
- Funds / input
- 4,200 CUSeparate invented figure
Position register
VA / 02| Account line | Entered amount | Operation | Result / status |
|---|---|---|---|
| 01 / quantityShares | 80 shares | Invented input | Fully paid long-share assumption |
| 02 / pricePurchase price | 50 CU/share | Invented input | Not a live quote |
| 03 / extensionPurchase value | Rows 01 and 02 | 80 shares × 50 CU/share | 4,000 CUMathematical inference; before costs |
| 04 / comparisonAvailable funds | 4,200 CU | Separate invented input | Not verified cash availability |
| 05 / differenceFunds less purchase value | Rows 04 and 03 | 4,200 − 4,000 CU | 200 CUComparison only; before costs |
The 200 CU difference here is a funds comparison. The 200 CU scenario boundary in Limits is a different invented input, not money reserved by this calculation.
Why “before costs” matters
The purchase value does not include the separately invented 2 CU buy cost later used only in the completed-sale example on Fills.
Separate the next state
A hypothetical loss needs a comparison price, not merely a purchase value. Scenario calculates one without calling it a guaranteed exit.