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5188Why Reverse Cash-And-Carry ExistsWhy is reverse cash-and-carry the mirror image of ordinary cash-and-carry when forwards are too cheap?金融与交易困难essay未尝试面试订阅5189Why Futures Need CareWhy can the simple forward-pricing formula be only an approximation for futures rather than an exact identity?金融与交易困难essay未尝试面试订阅5190Why Implied Repo MattersWhy do traders care about implied repo instead of looking only at the quoted forward premium?金融与交易困难essay未尝试面试订阅5191Bull Call Spread 1You buy a call with strike 100 for premium 4.5 and sell a call with strike 110 for premium 1.5, where 110>100. What are the net debit, the break-even stock price, and the maximum profit at expiry?金融与交易中等数值题未尝试面试订阅5192Bull Call Spread 2You buy a call with strike 95 for premium 6 and sell a call with strike 105 for premium 2.2, where 105>95. What are the net debit, the break-even stock price, and the maximum profit at expiry?金融与交易中等数值题未尝试面试订阅5196Protective Put PnL 1You own the stock at 100 and buy a put with strike 95 for premium 4. What is the strategy's profit at expiry if the stock ends at 92?金融与交易中等数值题未尝试面试订阅5200Protective Put PnL 5You own the stock at 90 and buy a put with strike 85 for premium 3.5. What is the strategy's profit at expiry if the stock ends at 87?金融与交易中等数值题未尝试面试订阅5201Covered Call PnL 1You own the stock at 100 and sell a call with strike 105 for premium 4. What is the strategy's profit at expiry if the stock ends at 112?金融与交易中等数值题未尝试面试订阅5205Covered Call PnL 5You own the stock at 95 and sell a call with strike 100 for premium 3.5. What is the strategy's profit at expiry if the stock ends at 110?金融与交易中等数值题未尝试面试订阅5206Long Straddle Break-Evens 1A long straddle uses strike 100, call premium 6, and put premium 5. What are the lower and upper break-even prices at expiry?金融与交易简单数值题未尝试面试订阅5207Long Straddle Break-Evens 2A long straddle uses strike 90, call premium 4.5, and put premium 3.5. What are the lower and upper break-even prices at expiry?金融与交易简单数值题未尝试面试订阅5208Long Straddle Break-Evens 3A long straddle uses strike 110, call premium 7, and put premium 6.2. What are the lower and upper break-even prices at expiry?金融与交易简单数值题未尝试面试订阅5211Why Premium Matters For Payoff ShapeWhy is it dangerous to look only at payoff diagrams and ignore option premiums?金融与交易困难essay未尝试面试订阅5212Why Covered Call Is Not Free YieldWhy is the premium earned from a covered call not simply free income?金融与交易困难essay未尝试面试订阅5213Why Protective Put Costs CarryWhy does a protective put often feel expensive in calm markets even though it limits downside?金融与交易困难essay未尝试面试订阅5214Why Multi-Leg Strategies Need ScenariosWhy is scenario analysis often more reliable than memorizing a diagram when evaluating multi-leg option strategies?金融与交易困难essay未尝试面试订阅5215Why Option Strategies Express ViewsWhy do traders often choose option strategies instead of just buying or shorting the stock when they have a directional view?金融与交易困难essay未尝试面试订阅5216Implied Put From Parity 1Spot is 100, strike is 100, the European call price is 6, and the risk-free rate is 0.05 for maturity T=1. What put price is implied by put-call parity under annual discounting?金融与交易简单数值题未尝试面试订阅5217Implied Call From Parity 2Spot is 90, strike is 95, the European put price is 7.2, and the risk-free rate is 0.04 for maturity T=0.5. What call price is implied by put-call parity?金融与交易简单数值题未尝试面试订阅5219Implied Call From Parity 4Spot is 80, strike is 85, the European put price is 8.6, and the risk-free rate is 0.02 for maturity T=1. What call price is implied by put-call parity?金融与交易简单数值题未尝试面试订阅