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5462Why Width Should Follow SpeedWhy should the same instrument often be quoted wider in a fast tape than in a slow tape?金融与交易中等essay未尝试面试订阅5463Why Competition Only Helps If Fills Improve EnoughWhy does matching a tighter competitor only make sense if the fill-rate gain is large enough?金融与交易中等essay未尝试面试订阅5464Why Good Width Cannot Fix Bad MidWhy can a mathematically reasonable width still lose money if the quote center is wrong?金融与交易中等essay未尝试面试订阅5465Why Width And Skew Are Different ControlsWhy do market makers treat quote width and quote skew as different levers?金融与交易中等essay未尝试面试订阅5466One-Sided Quote EV 1A one-sided quote has fill probability 0.28. If filled, size is 200, half-spread capture is 0.018 per share, rebate is 0.001, and expected adverse-selection loss is 0.01 per share. What is the expected PnL?金融与交易简单数值题未尝试面试订阅5471Two-Sided Quote EV 1You quote both sides for size 150. Bid-fill probability is 0.22 and ask-fill probability is 0.3. Bid half-spread is 0.016, ask half-spread is 0.02, rebate is 0.001, bid-side adverse loss is 0.009, and ask-side adverse loss is 0.012. What is expected PnL?金融与交易中等数值题未尝试面试订阅5476Partial Fill EV 1A quote can fill in two sizes: with probability 0.25 you trade 100 shares and earn 0.012 raw edge per share; with probability 0.1 you trade 250 shares and earn 0.009 raw edge per share. Rebate is 0.0005 per share in either case. What is expected PnL?金融与交易简单数值题未尝试面试订阅5481Join Or Improve 1If you join the current best quote, fill probability is 0.26, size is 120, raw edge per share is 0.011, and rebate is 0.0005. If you improve the quote, fill probability becomes 0.18, size is 120, raw edge per share is 0.017, and rebate is 0.0005. Which action has higher expected PnL?金融与交易中等数值题未尝试面试订阅5486Why Positive Edge Per Fill Is Not EnoughWhy is positive edge on each fill not sufficient to make a quoting strategy attractive?金融与交易中等essay未尝试面试订阅5487Why Rebate Can Flip The DecisionWhy can a seemingly tiny maker rebate materially change whether a quote is worth posting?金融与交易中等essay未尝试面试订阅5488Why Hit Rate Can Be MisleadingWhy can a high fill rate be a warning sign instead of a success metric for a market maker?金融与交易中等essay未尝试面试订阅5489Why Average Spread Capture Overstates EdgeWhy does average spread capture often overstate true strategy edge?金融与交易中等essay未尝试面试订阅5490Why Latency Matters For EVWhy can quote-cancel latency reduce expected value even if your fair-value model is accurate on average?金融与交易中等essay未尝试面试订阅5491Two-Round Opportunity Value 1In round 1, a quote has fill probability 0.3 and edge 0.02 if filled. If it does not fill, you get a round-2 opportunity with fill probability 0.25 and edge 0.028. Assume a round-1 fill ends the game because your risk limit is used up. What is total expected edge?金融与交易中等数值题未尝试面试订阅5496Fill With Carry Cost 1Round 1 has fill probability 0.32 and edge 0.024, but a round-1 fill also creates carry cost 0.006 before the next decision point. If round 1 does not fill, round 2 has fill probability 0.28 and edge 0.02. What is total expected edge?金融与交易中等数值题未尝试面试订阅5501Choose First-Round Policy 1Policy A has round-1 fill probability 0.42, round-1 edge 0.012, and continuation value 0.009 if unfilled. Policy B has round-1 fill probability 0.25, round-1 edge 0.024, and continuation value 0.015 if unfilled. Which policy has higher expected value?金融与交易中等数值题未尝试面试订阅5506Two-Round Signal Tree 1Round 1 has fill probability 0.28 and edge 0.02. If round 1 does not fill, round 2 begins. At round 2 a strong signal arrives with probability 0.4; under a strong signal the quote has fill probability 0.35 and edge 0.03, while under a weak signal the fill probability is 0.2 and edge is 0.012. What is total expected edge?金融与交易困难数值题未尝试面试订阅5511Why Future Opportunity Is Part Of The Quote DecisionWhy can a quote with slightly lower immediate edge still be better once future opportunity is considered?金融与交易中等essay未尝试面试订阅5512Why Early Fill Is Not Always GoodWhy is an early fill not automatically good news in a multi-round market-making problem?金融与交易中等essay未尝试面试订阅5513Why Path Dependence MattersWhy can two strategies with the same average one-period edge have different multi-round values?金融与交易中等essay未尝试面试订阅