如图, 请老师解释下, 谢谢老师!

如果美国10年长期国债收益率3.233%，这个3.233%是报的到期收益率吗？

为什么dt 是1/12 而不是 0.5的平方？

Suppose that TBA prices of Fannie Mae 6% for July 9 and August 9 settlements are 103 and 102.6, respectively. The accrued interest to be added to each of these prices is 9 actual/360 days of a month's worth of a 6% coupon, 0.15. Let the expected total principal paydown be 2% and assume short-term rate is 1%. If an investor finance a purchase of an MBS pool using dollar roll valued at 10 million. Which of the following is true? A. The roll trades above carry. B. The roll trades below carry. C. The roll trades at breakeven. D. Hard to determine. 请问下老师为什么光持有资产的计算是： 10M(6%/12+2%)=250000, 请解释下题干里面的2%具体是什么意思，分别在光持有资产和持有+roll里面的应用，谢谢！

请问, 为什么: 在市场风险中, VaR是左边肥尾; 但是在操作风险中变成了右边肥尾? 谢谢老师!

求问47题b为什么不对

请老师解释下选项A为什么是对的。

求问43题其他选项为啥是对的？

No31 此题的d选项为何错了 老师的解答感觉没回答到点啊

Consider three potential statements about Metallgesellschaft (MG): I.MG employed a stack-and-roll hedge because liquidity was highest for short-dated oil futures contracts. II.MG employed a stack-and-roll hedge, and a stack hedge has greater basis risk than a strip hedge. III.The roll return in MG’s stack-and-roll hedge was profitable under oil backwardation but losing under oil contango. 老师可以解释下stack-and-roll这个策略是怎样在反向市场中盈利的吗？谢谢