Introduction: Markets Hold Firm as Rate Sensitivity Rises
From August 31 to September 4, U.S. stocks moved as investors weighed geopolitical risks, higher oil prices, volatile global bond yields and a stronger jobs report. SPY gained 0.41% for the week, suggesting that risk appetite remained intact. However, market swings grew sharper. On September 4, August nonfarm payrolls rose by 162,000, well above forecasts, while unemployment held at 4.1%. As a result, Treasury yields and the dollar climbed, prompting investors to price in a greater chance of further Fed tightening.
$标普500(.SPX)$ $标普500ETF(SPY)$ $SP500指数主连 2609(ESmain)$ $微型SP500指数主连 2609(MESmain)$ $英伟达(NVDA)$ $微软(MSFT)$ $Meta Platforms, Inc.(META)$ $亚马逊(AMZN)$
The key question is whether elevated valuations can withstand higher rates for longer. Earnings expectations remain broadly stable. Therefore, investors are staying in tech while favoring market leaders with clear AI demand, cloud revenue and returns on capital.
$美国10年期国债收益率(US10Y.BOND)$ $20+年以上美国国债ETF-iShares(TLT)$
Markets: Indexes Hold Near Highs as Rate Expectations Drive Intraday Swings
Early in the week, Middle East tensions pushed oil prices and global bond yields higher. As a result, the S&P 500 and Nasdaq came under pressure. On September 3, Fed Governor Christopher Waller said he would support keeping rates on hold if inflation continued to ease. His comments reduced expectations for another rate hike and lifted risk appetite. The S&P 500 rose 1.06% while the Nasdaq gained 1.40%, according to Reuters. However, strong August employment data strengthened the case for another Fed rate hike before the weekend. Consequently, the S&P 500 fell 0.38% on September 4, while the Nasdaq lost 0.29%.
World PE Ratio data show that the S&P 500 remains near elevated levels, with no clear short-term breakdown. However, shifts in rate expectations now lead market rotation. Rising risk-free rates limit multiple expansion for long-duration growth stocks. Therefore, investors should temper expectations for valuation-led gains and focus on companies that can deliver earnings.
$标普500(.SPX)$ $标普500ETF(SPY)$ $SP500指数主连 2609(ESmain)$ $微型SP500指数主连 2609(MESmain)$ $纳指100ETF(QQQ)$ $纳斯达克(.IXIC)$ $纳指三倍做多ETF(TQQQ)$ $微型NQ100指数2609(MNQ2609)$ $NQ100指数主连 2609(NQmain)$ $道琼斯(.DJI)$ $道琼斯指数主连 2609(YMmain)$ $微型道琼斯指数主连 2609(MYMmain)$
S&P 500 Sector P/E Valuations Across 5, 10 and 20 Years, with Price Relative to the 200-Day Moving Average | Source: WorldPEratio.com
Valuations: Earnings Provide Support as Higher Rates Cap Upside
Market valuations remain elevated. Meanwhile, the earnings yield offers only a narrow premium over the 10-year Treasury yield. Earnings growth still supports U.S. stocks, however, current valuations leave little room for disappointment.
This week’s macro data added to the risk. According to the Bureau of Labor Statistics, nonfarm payrolls rose by 162,000 in August. This was well above forecasts of about 50,000 to 60,000. The report confirmed that the labor market remains resilient. At the same time, geopolitical tensions pushed oil prices higher. Together, strong employment and rising energy costs could keep inflation elevated. If these pressures persist, the Fed may keep policy tight for longer. Higher rates would then put further pressure on valuation multiples.
Elevated valuations don’t warrant an immediate cut to U.S. equity exposure. They do, however, require greater price discipline. Investors should favor companies with stable earnings, strong cash flow and reasonable valuations relative to their own history. High-valuation themes with limited earnings visibility remain more exposed to rising rates and multiple compression.
Fund Flows: Broad-Based Inflows Continue as Sector Dispersion Widens
Since early August, U.S. equity ETF flows have shown broad-based inflows alongside sharp sector dispersion. According to etfdb, the S&P 500 ETF (SPY) drew about 5.15 billion dollars in net inflows. This suggests that investors have not pulled out of U.S. equities broadly. However, flows across sector and style ETFs diverged sharply.
Latest Sector ETF Net Flows (Red: Net Inflows; Green: Net Outflows; USD Billions) | Source: ETFdb.com
SPY Daily Net Flows, June 15 to July 15, 2026 (Cumulative Net Inflow: $20.38 Billion; USD Billions) | Source: ETFdb.com
This flow pattern aligns with the macro backdrop. Strong employment and rising oil prices have pushed interest rate expectations higher. As a result, capital has moved out of rate-sensitive financials and some cyclical sectors. Meanwhile, flows have shifted toward energy as an inflation hedge and sectors with stronger earnings support. Continued inflows into broad-market ETFs show that overall risk appetite remains intact. However, investors are moving from broad beta exposure toward more selective alpha opportunities. This shift also explains the widening performance gap within the M7.
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AI: Capex Stays Strong, but Gains Concentrate in a Few Winners
AI capex shows no sign of cooling. However, rising spending is putting increasing pressure on Big Tech's free cash flow.
AI infrastructure spending is now drawing directly on corporate cash flow. If capex continues to outpace operating cash flow, funding pressure will rise. High interest rates add to that pressure. Companies may then rely on debt, internal cash reserves or returns from existing assets. By contrast, apple faces less strain. It generated about $54 billion in quarterly operating cash flow, while annual capex is projected at about $14 billion. Therefore, the key divide within the Magnificent Seven is clear. Companies must expand AI capacity while preserving free cash flow and shareholder returns.$微软(MSFT)$ $谷歌(GOOG)$ $Meta Platforms, Inc.(META)$ $亚马逊(AMZN)$ $苹果(AAPL)$
Microsoft has improved visibility into its cloud scale and AI monetization. According to Reuters, Azure generated $29.4 billion in its latest quarter and $101.9 billion for the full year. However, Microsoft also changed its revenue classification and lowered its Azure outlook. As a result, investors remain sensitive to any change in cloud growth.
Nvidia’s acquisition of Hugging Face extends its reach into the developer ecosystem. Meanwhile, Meta has benefited from stronger ad monetization, cost discipline and improving expectations for AI returns. Nvidia and Meta gained 4.34% and 7.76% during the week, respectively, outperforming SPY. By contrast, Microsoft fell 1.50%, while Amazon lost 0.49%. The gap shows that AI exposure alone cannot support performance. Capex pressure, growth prospects and valuation still shape investor returns.$英伟达(NVDA)$
M7 Weekly Returns vs. the S&P 500 (Benchmark: +0.41%) | Source: Tiger Brokers
M7: Winners Pull Further Ahead as Allocation Shifts from Basket Exposure to Selective Conviction
Performance across the M7 diverged sharply this week. Meta gained 7.76%, Nvidia rose 4.34% and Apple added 0.98%. Alphabet held roughly flat, while Amazon, Microsoft and Tesla fell 0.49%, 1.50% and 3.77% respectively.$特斯拉(TSLA)$
Meta's strength reflects growing confidence in its AI-driven advertising business, which has lifted conversion rates and operating leverage. Nvidia benefited from continued AI compute demand and its expanding developer ecosystem following the Hugging Face deal. According to Reuters, Tesla, meanwhile, launched a limited Cybercab pilot in Austin. However, regulators quickly stepped in. The National Highway Traffic Safety Administration opened a review of the vehicle's safety certification, while growth in Tesla's China business continued to slow. As a result, investors have grown more cautious on the pace of robotaxi monetization.
Given this divergence, allocating to the M7 as a single basket no longer captures the full picture. A more defensive approach favors companies that can point to order growth, cloud revenue, ad monetization or cash flow to justify their AI spending. Investors should stay disciplined on names with heavy capital outlays, limited earnings visibility and greater exposure to higher rates.
$Meta Platforms, Inc.(META)$ $微软(MSFT)$ $谷歌(GOOG)$ $亚马逊(AMZN)$ $英伟达(NVDA)$ $苹果(AAPL)$ $特斯拉(TSLA)$
M7 Trailing P/E (TTM) Comparison (Tesla's Axis Shown on a Log Scale) | Source: Tiger Brokers
M7 Market Cap and Share of S&P 500 Market Cap, Past Year | Source: MacroMicro
Conclusion: Watch Earnings Delivery and Rate Trends in a High-Valuation Market
U.S. stocks traded near highs this week, but volatility picked up as strong jobs data and rising oil prices lifted rate expectations. As a result, valuation expansion faces tighter limits. AI investment remains robust. However, investors should focus on leaders that can prove earnings, cash flow and commercialization, while keeping exposure to high-valuation, rate-sensitive assets in check.
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