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AI Summary. The seven largest S&P 500 companies have risen 80% this year and carry an average price-to-earnings ratio above 50, diverging from the other 493 companies in the index. Their valuations are beginning to resemble those of the Nifty Fifty era and the peak of the tech bubble.
Torsten Sløk ApolloCore argument: Investors buying the S&P 500 are buying seven companies already up 80% this year with an average P/E ratio above 50.
The divergence between the S&P7 and the S&P493 continues. Investors buying the S&P 500 today are buying seven companies that are already up 80% this year and have an average P/E ratio above 50. In fact, S&P7 valuations are beginning to look similar to the Nifty Fifty and the tech bubble in March 2000.AI Summary. Corporate profit margins, long regarded as one of the economy's most reliably mean-reverting series, have risen continuously so far this century. Measured through the national income accounts used in calculating GDP, profits now take a larger share of the economy than on the eve of the 1929 crash.
John Authers BloombergCore argument: Corporate profits measured in the National Income and Product Accounts take a larger share of the U.S. economy than on the eve of the 1929 Great Crash.
Throughout the 20th century, profit margins were regarded as one of the purest mean-reverting series in the economy. So far this century, however, margins have done nothing but rise. Measured with the National Income and Product Accounts, part of the GDP calculation, profits are currently taking a bigger share of the economy even than on the eve of the Great Crash in 1929. The series comes with a lag, so we can assume the profit share on this basis is comfortably at a record by now.AI Summary. The gap between French and German 10-year government bond yields has widened at a pace matched only during the euro zone sovereign debt crisis. France and the UK have less room than the US to close deficits with tax increases, as tax revenues equal 43.9% of GDP in France and 35.3% in the UK versus 25.2% in the US.
John Authers BloombergCore argument: The spread of 10-year French OATs over German Bunds has risen at a pace matched only during the worst days of the euro-zone sovereign debt crisis in 2011 and 2012, fueling talk of a second crisis centered in Paris.
Only in the worst days of the euro zone’s sovereign debt crisis, in 2011 and 2012, has the [spread of 10-Year French OATS over German Bunds] risen so fast. Talk of a second euro-zone crisis, this time with an epicenter in Paris, is growing, and it’s easy to see why. Why is this more of a problem for France and the UK? Beyond their deficits, they also shoulder much higher tax burdens than the US. Tax revenues are 25.2% of GDP in the US, the lowest of the major developed economies - but 35.3% in the UK and 43.9% in France. It’s hard to imagine after decades of tax-cutting, but a US politician could deal with the deficit fairly easily with a tax hike. It’s not clear that option is open to French lawmakers, even if they could somehow persuade voters to go along with them. The populist politicians of left and right, who currently look well placed in next year’s presidential elections, are in any case unlikely to try.AI Summary. Foreign investors made a record $942bn in net purchases of US stocks and investment fund shares over 12 months, the highest rolling 12-month total in Treasury data going back to 1985. Foreign demand for US debt securities moved in the opposite direction, falling to a net $188bn in the second quarter from $314bn in the first.
Michael Taffe and George Steer Financial TimesCore argument: Foreign investors made a record $942bn in net purchases of US equities and investment fund shares in the 12 months to July, the highest rolling 12-month total in Treasury data going back to 1985.
Foreign investors made a record $942bn in net purchases of US equities and investment fund shares in the 12 months to July, accelerating a shift in overseas investment towards American stocks and away from debt. The flows represented the highest rolling 12-month total in Treasury data going back to 1985. Net purchases of US equities and investment fund shares by foreign investors jumped to $426bn in the second quarter, up 62% from the same period in 2025, and surpassing the previous quarterly record of $299bn in 2022, according to the Bureau of Economic Analysis. Foreign demand for US debt moved in the opposite direction. Overseas investors bought a net $188bn of US debt securities in the second quarter, down from $314bn in the first.AI Summary. Much of the official-sector inflow into the U.S. now comes from investors who are not traditional reserve managers, and those flows remain heavily tilted toward the dollar and toward risk assets rather than Treasuries. The author argues this shift in the global investor base helps explain why Treasuries trade at a discount while the dollar retains a premium.
Brad Setser and Alex Etra Council on Foreign RelationsCore argument: Most official-sector inflows into the U.S. come from investors who are not classic reserve managers, and those flows remain heavily tilted toward the dollar, so any real de-dollarization would likely begin among these investors.
Most of the current flow into the US from the “official” sector is coming from investors who are not classic reserve managers. Those flows remain heavily tilted toward the dollar, at least for now. Any real de-dollarization would likely occur first among these investors. Put differently, the dollar’s global role is increasingly as a source of returns, not a source of safety. The foreign bid, private and public, is for risk, not for Treasuries. It is currently fashionable in some circles to point to the diminution of the “convenience yield” on Treasuries even while the U.S. dollar continues to enjoy such a privilege. But the shift in the global investor base and their apparent portfolio preference for U.S. risk assets in lieu of Treasuries may help explain the divergence between the convenience yield on Treasuries and the convenience yield on the USD.AI Summary. International flows into US stocks averaged 2.8% of US GDP over a year, overtaking flows into US Treasuries at 2% of GDP for the first time this century outside brief episodes during the Covid-19 pandemic and after the global financial crisis, according to Deutsche Bank analysis of US Treasury data.
Emily Herbert and Ian Smith Financial TimesCore argument: Foreign inflows into US stocks averaged 2.8% of US GDP in the year to June, overtaking Treasuries at 2% of GDP, according to Deutsche Bank analysis of US Treasury data.
International flows into US stocks reached 2.8% of US GDP on average in the year to June, overtaking Treasuries — at 2% of GDP — for the first time this century outside brief episodes in the Covid-19 pandemic and the aftermath of the global financial crisis, according to analysis of US Treasury data by Deutsche Bank. The change reflects the ever-growing lure of the US stock market, with the S&P 500 on track for a fourth straight year of double-digit gains. Powering the rally has been vast AI investment, which is driving profit margins to new highs, according to FactSet data stretching back to 2009.AI Summary. An estimate of the intrinsic 10-year US Treasury rate, built from actual inflation and real economic growth, far exceeded the actual 10-year Treasury rate after inflation surged, and that gap has since narrowed to roughly 4.75% actual versus 5.41% intrinsic.
Aswath Damodaran Musing on MarketsCore argument: As of September 2026, the US 10-year Treasury rate stood at 4.75% while the intrinsic 10-year rate was 5.41%, a gap of 66 basis points.
[The graph shows] the actual inflation rates and real GDP growth rates for the US, going back to 1962, and [the implied] intrinsic 10-year treasury rate (the cumulative column) and actual 10-year treasury rate each year. When inflation surged in 2022, interest rates went up, but since the rates that I am tracking are long term rates, the intrinsic risk free rate vastly exceeded the actual rate that year, but the difference has narrowed over time, and almost dissipated by September 2026 (when the US 10-year treasury bond rate was [5%] and and the intrinsic ten-year rates yielded 5.41%).