本周8月8日的《市场周报》指出，主要股指出现“爆发式上涨”（crash up），标普500指数创下历史新高，与此同时，美日两国罕见地联合干预了汇市。 市场的突然飙升发生在一个被普遍认为是疲软的时期之后。此前，主要股指一直处于区间震荡，“AI交易”（以韩国综合指数KOSPI为代表）显现出疲软迹象，且由于伊朗冲突，利率呈上升趋势。尽管如此，并且在美联储会议后市场看似充满不确定性，股指依然飙升。这一现象的特点是“现货上涨，波动率也上涨”的动态——即股指价格和隐含波动率同步上升——这让人想起个股中的投机性逼空，但现在却发生在指数层面。尽管这种现象不稳定，且通常出现在牛市后期，但有几个因素似乎推动了这次逆转： 首先，与伊朗的紧张局势降温。有报告称，美国正从军事介入中撤退，这可能是由于拦截器库存耗尽和内部压力所致，从而促成了和平谈判。地缘政治风险的缓解可能会减轻油价和随之而来的利率的上涨压力，从而消除一个重要的市场阻力。 其次，最新的非农就业报告显示就业岗位减少了2万个，低于预期。尽管这是一个负面头条，但失业率却下降了。演讲者认为，鉴于人口结构变化，美联储更重视失业率，而较低的失业率可能预示着劳动力市场趋紧，甚至可能过热，这通常是偏鹰派的信号。然而，缺乏加速的工资增长或JOLTS等其他劳动力指标的显著升温，使得这种解释变得复杂。演讲者驳斥了“婴儿潮一代”劳动力参与率下降暗示绝望的说法，他指出，总体参与率下降是由于人口老龄化和退休人口增加，并强调主要工作年龄段的劳动力参与率依然健康。 第三，AI交易似乎“重获动力”。尽管像RAM这样的瓶颈环节交易可能表现平平，“MAG-7”（例如微软、亚马逊）却飙升，由于其权重较大，带动了主要股指上涨。因此，AI叙事并未结束，而是发生了演变。 谈到日元干预，日本财务省和日本央行一直在努力支撑迅速贬值的日元，日元最近达到了163日元兑1美元。这种疲软对进口依赖型日本来说是个问题，加剧了通货膨胀。尽管通胀高企，日本央行仍将利率维持在1%的低位，导致实际利率为负，这使得日元走强变得困难。此前单独的干预只提供了暂时的缓解。 一个重要的新进展是美日联合干预，这是几十年来未见的举动。美国通过出售其外汇储备中约130亿欧元的资产来购买日元，从而做出了贡献。尽管一些人认为这是美国对盟友的“恩惠”，但更细致的观点是，疲软的日元往往会导致日本长期债券收益率上升，进而可能给美国长期债券收益率带来压力，因此日元稳定间接有利于美国国债市场。 美国财政部长耶伦建议日本利用FEMA回购工具来获取美元，同时避免出售美国国债，从而避免市场波动，并展示其干预“弹药充足”。然而，演讲者批评这主要是一种姿态。日本已经与纽约联储建立了美元互换额度，提供了几乎无限的美元获取途径。此外，日本在纽约联储的“外国回购池”中持有大量美元，并且可以轻松进入私人回购市场。FEMA回购工具最初是为那些“没有”互换额度的央行准备的。 最终，此次干预的效果有限，仅将日元从163日元兑1美元推升至158日元兑1美元。由于日本与其他主要经济体之间存在显著的利差，市场仍不买账。演讲者总结道，除非日本央行在加息问题上采取更积极的立场，以解决日元疲软的根本驱动因素，否则这些干预措施是在“浪费美元”。市场对这次前所未有的干预缺乏“避险”反应，这凸显了参与者对日元将继续贬值的确信。

This week's Markets Weekly, on August 8th, highlights a "crash up" in major indexes, with the S&P 500 hitting new all-time highs, alongside a rare joint U.S.-Japan currency intervention. The market's sudden surge came after a period of perceived weakness. Major indexes had been range-bound, the "AI trade" (represented by KOSPI) showed signs of faltering, and interest rates were trending higher due to the Iran conflict. Despite this, and a seemingly "dicey" period post-Fed meeting, indexes soared. This was characterized by a "spot-up, vol-up" dynamic – both index prices and implied volatility rising – reminiscent of speculative squeezes in single stocks but now occurring at the index level. While unstable and typical of later bull market cycles, several factors appear to have driven this reversal: Firstly, a de-escalation of tensions with Iran. Reports suggest the U.S. is backing away from military engagement, potentially due to depleted interceptor stockpiles and internal pressure, leading to peace talks. This easing of geopolitical risk could reduce upward pressure on oil prices and, consequently, interest rates, removing a significant market headwind. Secondly, the latest non-farm payrolls report showed a loss of 20,000 jobs, below expectations. While a headline negative, the unemployment rate *decreased*. The speaker argues that the Federal Reserve prioritizes the unemployment rate given demographic shifts, and a lower rate could signal a tightening, potentially overheating labor market, which would typically be hawkish. However, a lack of accelerating wage growth or significant heating in other labor measures (like JOLTS) complicates this interpretation. The speaker dismisses the "boomer" narrative of falling labor force participation implying desperation, pointing to declining overall participation due to an aging, retiring population and noting that prime-age labor force participation remains healthy. Thirdly, the AI trade seems to be getting a "second wind." While bottleneck trades like RAM might be languishing, the "MAG-7" (e.g., Microsoft, Amazon) are zooming higher, carrying the major indexes due to their significant weight. The AI narrative, therefore, isn't over but has morphed. Turning to the Yen intervention, Japan's Ministry of Finance and the Bank of Japan have been struggling to prop up the rapidly depreciating Yen, which recently hit 163 JPY/USD. This weakness is problematic for import-heavy Japan, fueling inflation. Despite high inflation, the Bank of Japan maintains a low interest rate of 1%, resulting in negative real rates, making Yen strengthening difficult. Previous solo interventions offered only temporary relief. A significant new development is the joint U.S.-Japan intervention, a move not seen in decades. The U.S. contributed by selling approximately €13 billion in euros from its foreign exchange portfolio to buy yen. While some suggest this is a "favor" to a U.S. ally, a more nuanced view is that a weak Yen often leads to rising Japanese long-bond yields, which can then pressure U.S. long-bond yields, making Yen stabilization indirectly beneficial to the U.S. Treasury market. U.S. Treasury Secretary Yellen suggested Japan utilize the FEMA Repo Facility to access dollars without selling Treasuries, thereby avoiding market disruption and showcasing "ample ammo" for intervention. However, the speaker critiques this as primarily optics. Japan already has dollar swap lines with the New York Fed, offering essentially unlimited dollar access. Furthermore, Japan holds substantial dollars in a "foreign repo pool" at the New York Fed and could easily access private repo markets. The FEMA repo facility was originally for central banks *without* swap lines. Ultimately, the intervention's effectiveness has been limited, moving the Yen only from 163 to 158. The market remains unconvinced due to the significant interest rate differentials between Japan and other major economies. The speaker concludes that these interventions are "wasting dollars" until the Bank of Japan adopts a more aggressive stance on hiking interest rates to address the fundamental drivers of Yen weakness. The market's lack of a "risk-off" reaction to this unprecedented intervention underscores participants' conviction in the Yen's continued decline.