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A short box can exchange cash today for a fixed payment later. Rebuild the four option legs, calculate the rate on usable net proceeds and test whether fees or withdrawal restrictions erase the apparent saving.

A futures round trip can have zero gross trading P&L and still consume cash. Reconstruct two opposite variation-payment paths, test whether gains are actually available, and separate loan principal from interest and initial-margin carry.

A start-settled FRA discounts an interest difference, not the loan principal. Reconcile a €10 million example across payment dates, then measure the gaps left by reinvestment rates, financing costs and the loan's credit spread.

Lease liabilities and lease cash must be treated consistently with the earnings denominator. A worked example separates four possible multiples, explains why two coherent approaches can reverse a stock screen, and reconciles EBITDA with cash without mislabelling the result as free cash flow.

A negative accrued-interest line reduces a gilt’s settlement payment because the buyer misses the imminent coupon. Reconcile the record-date boundary, a £3,000 coupon error and penny rounding without mistaking a lower invoice for an investment gain.

A liquidation payment can exceed an ETF’s sale price and still be worth less after a delay. Compare executable sale proceeds with net distributions on one common date, identify the break-even payment, and separate fund expenses from account-specific costs.

A stock payment can fall due before the currency purchased to fund it arrives. Compare an earlier FX value date with a committed dollar bridge loan, count weekend interest correctly, and test whether the return forgone on euros reverses the cheaper route.

A TAS trade fixes a differential to a settlement price that is not yet known. Follow a one-contract WTI example from a $30 first-day credit to a $470 total loss, then compare fixed-price execution, fees and unmatched fills.

An $8,400 MBS payment can contain only $400 of interest. Use pool factors to rebuild three distributions, reconcile the purchase cost and see why receiving principal early is not the same as earning a higher return.