Answer: The potential liquidity concerns arising from the futures position

The correct answer is **B. The potential liquidity concerns arising from the futures position.** In the MGRM (Metallgesellschaft Refining and Marketing) case, the company used a **stack-and-roll** (or rolling hedge) strategy: stacking massive long positions in short-dated (mostly front-month) futures contracts to hedge its long-term fixed-price delivery obligations, then rolling those positions forward each month. The actual crisis in 1993 stemmed from two main problems: - Sharp drop in spot oil prices → unrealized losses on the long futures positions → immediate margin calls requiring large cash outflows. - Shift from backwardation (typical in oil markets, where near-term prices > longer-term) to contango → rollover losses when closing expiring contracts at lower spot levels and re-entering at higher future prices. The question asks the **"What if?"** scenario where **none** of those issues occurred: no significant spot price fall (so no major mark-to-market losses/margin calls from price decline) **and** no shift to contango (market stays in backwardation or at least avoids persistent rollover losses). In that favorable world, the hedge would perform as intended economically over the long run: gains/losses on futures would offset opposite changes in the value of the fixed-price forward contracts, with potential extra profit from backwardation roll yield. However, the **biggest remaining worry** would still be **liquidity risk** from the sheer size of the futures positions. MGRM held positions equivalent to ~150–180 million barrels (a huge fraction of open interest on NYMEX at the time). Even without adverse price moves or contango: - Futures are marked-to-market daily → any interim volatility (even temporary upward or downward price swings) could trigger margin calls requiring substantial cash to post/maintain positions. - The long-term forwards/swaps were **not** marked-to-market → offsetting economic gains stayed unrealized (locked in cash only upon physical delivery years later). - This created a **timing mismatch** in cash flows: potential short-term cash drains on futures with no immediate inflows to offset them. - The massive scale amplified this → even moderate volatility could strain funding/liquidity, especially without pre-arranged credit lines or sufficient cash reserves/bank support. This liquidity/funding risk (often called "margin call risk" or "cash flow timing risk") was inherent to the stack-and-roll approach due to its maturity mismatch and position size — independent of the specific 1993 price drop or contango shift. The other options don't fit the "no problem" scenario: - **A** — Frequent trading/rolling costs exist but were not the primary concern (and in backwardation, rolling could even generate gains rather than just costs). - **C** — Basis risk from rolling/term structure mismatch was a key issue in contango but much less so if backwardation persists (the strategy was designed expecting backwardation). - **D** — Incorrect, as liquidity concerns remained a material risk even in the hypothetical favorable environment. Thus, even if the price fall and contango never happened, MGRM's biggest worry would still be **potential liquidity concerns arising from the (very large) futures position**.