Political Calculations
Unexpectedly Intriguing!
13 October 2026
Port of Los Angeles by Linnaea Mallette on PublicDomainPictures.net - https://www.publicdomainpictures.net/en/view-image.php?image=493140&picture=port-of-los-angeles

Trade between the U.S. and China continued showing signs of overall improvement. Trade data reported by the U.S. Census Bureau for August 2026 indicates a small month-over-month decline, but significant year-over-year gains.

The combined value of all goods exchanged between the U.S. and China declined $0.9 billion (or 2.4%) from $36.8 billion in July to $35.9 billion in August 2026. However, that figure was up $2.5 billion (or 7.3%) from August 2025's $33.4 billion.

Meanwhile, the trailing twelve month average of the trade between the U.S. and China rose to $31.6 billion in August 2026, up $1.3 billion (or 4.2%) over its April 2026 low. Trade between the two nations has been slowly increasing in the period since the one-year anniversary of President Trump's 2 April 2025 "Liberation Day" global tariff announcement.

The following chart presents the monthly data for the combined value of goods exchanged between the U.S. and China and its trailing twelve month average for the period from January 2017 through August 2026.

Combined Value of U.S. Exports to China and U.S. Imports from China, January 2017 - August 2026

The trailing twelve month average of the combined value of goods exchanged between the U.S. and China is about $19.3 billion below our counterfactual projection of what the level of trade between the two nations would have likely been in the absence of the global tariff war. Over the last three months, it has roughly paralleled it, indicating trade between the U.S. and China is stabilizing at a much reduced level.

Looking forward to September 2026, the Port of Los Angeles reported it processed a record high number of containers, indicating U.S. imports of Chinese-produced goods increased from August's level. This outcome was expected as importers of goods from China were seeking to accelerate the delivery of many products ahead of the U.S. Christmas shopping season to avoid tariff increases.

References

U.S. Census Bureau. U.S. International Trade in Goods and Services (FT900). U.S. Trade in Goods with China, Not Seasonally Adjusted, Nominal Figures, Total Census Basis. [Online database]. Accessed 6 October 2026.

Image Credit: Port of Los Angeles photo by Linnaea Mallette on PublicDomainPictures.ent. Creative Commons CC0 1.0 Universal Deed.

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12 October 2026
An editorial cartoon of a young bull and bear who are out trick-or-treating on Wall Street with the bull filling their bag with candy labeled 'AI' while the bear says 'YOU ARE GOING TO GET SICK EATING ALL THAT!'. Image generated with Microsoft Copilot Designer.

The S&P 500 (Index: SPX) hit a new record high of 7,818.54 on Tuesday, 6 October 2026. The index then proceeded to bounce around a little below that level before wrapping up the trading week at 7,811.54, less than 0.1% below its new record high close.

Overall, it was a good week for the handful of big cap AI tech stocks that account for a disproportionately large portion of the total value of the S&P 500 index. It was a particularly good week for Nvidia (NASDAQ: NVDA), the single stock whose shares account for eight percent of the entire market capitalization of the S&P 500 index, which not uncoincidentally, also hit its own all time record high on Tuesday, 6 October 2026 as spending on Artificial Intelligence (AI)-related infrastructure and development continues to power the earnings of these megacap stocks.

How long that state of affairs might continue is perhaps the biggest question investors face as the fourth quarter's earnings season gets underway, which is dueling with the other big question of how much more might the Federal Reserve hike short-term interest rates in the U.S.?

On that count, the CME Group's FedWatch Tool outlook was effectively unchanged from the previous week. It continues to project the Fed will act to hike the Federal Funds Rate by a quarter point on 9 December (2026-Q4), followed by more quarter point rate hikes that will be announced when the Fed's rate-setting Open Market Committee meets on 17 March (2027-Q1) and 9 June (2027-Q2). What did change is that the FedWatch tool now sees the June 2027 hike as the last in 2027.

The latest update of the dividend futures-based model's alternative futures chart indicates investors shifted their forward-looking attention from the current quarter of 2026-Q4 to the slightly more distant future quarter of 2027-Q1 on Friday, 9 October 2026. With the Fed expected to leave interest rates alone until December, the shift in focus signals investors will be paying close attention to how the outlooks of publicly-traded businesses going into 2027 might change as they report their earnings.

Alternative Futures - S&P 500 - 2026Q4 - Standard Model (m=-2.0 from 28 Apr 2025) - Snapshot on 9 Oct 2026

Here are the market moving headlines of the trading week ending on Friday, 9 October 2026:

Monday, 5 October 2026
Tuesday, 6 October 2026
Wednesday, 7 October 2026
Thursday, 8 October 2026
Friday, 9 October 2026

The Atlanta Fed's GDPNow tool's projection of real GDP growth for the U.S. economy in 2026-Q3 dipped to 3.6% from the +3.7% annualized growth it projected a week earlier.

Image credit: Microsoft Copilot Designer. Prompt: "An editorial cartoon of a young bull and bear who are out trick-or-treating on Wall Street with the bull filling their bag with candy labeled 'AI' while the bear says 'YOU ARE GOING TO GET SICK EATING ALL THAT!'".

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09 October 2026

What happens when you apply outside-the-box thinking to an inside-the-box challenge?

The inside-the-box challenge, in this case, is the magnetic compass. Once a vital tool for navigation in the days before satellites and the Global Positioning System, the magnetic compass of our modern era is something that hikers will carry as a backup. That backup status is conveyed in their modern design, which more often than not, means something that has been assembled from inexpensive plastic components. If they look cheap, it's because they are cheap. What was an indispensable tool has become disposable.

But what if it wasn't a throwaway item? Oceanus Brass' Victoria Warren systematically thought through every element of the magnetic compass and came up with the Lodestar Compass, elevates almost every one of the aspects of a magnetic compass into something that's anything but disposable. The following video, created for its Kickstarter campaign, showcases the Lodestar Compass as a high quality, functional device.

Some might call it overengineered, but it cannot be denied that every aspect of its design has been thought through and the result is something that will have and keep real value.

Warren's Kickstarter campaign has several days left to go at this writing, but the project has been successfully funded and Oceanus Brass' Lodestar Compass will be produced. The campaign will run through 15 October 2026.

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08 October 2026
S&P 500 2026-Q3 Market Cap $68.45 Trillion

The market capitalization of the S&P 500 (Index: SPX) increased during the third quarter of 2026, rising 1.9% above where it finished in the second quarter.

The S&P 500's 503 stocks, covering all 500 firms that compose the index, collectively grew by a little over $1.26 trillion to reach a total valuation of a little shy of $68.45 trillion.

That topline number however conceals a major split within the index. Most of the index' gain in valuation was concentrated within the top ten stocks, which increased from $24.50 trillion to $26.80 trillion as their share of the index' value rose from 36.5% to 39.2% of its total value.

That increase offset a decline in the combined market capitalization of the remaining 493 stocks of the S&P 500, which fell 2.4% from $42.69 trillion to $41.64 trillion.

The following chart shows the relative shares of the top 10 stocks in the S&P 500 at the close of trading on 30 September 2026, the end of the third quarter of 2026.

S&P 500 Market Capitalization Snapshot on 30 September 2026

The membership of the S&P 500's Top 10 stocks remained the same as at the end of 2026-Q2, but several changed their rank within the elite group. Meta Platforms (A) (NASDAQ: META) surged from ninth place to seventh as the company released its Muse agentic AI tool, knocking both Broadcom (NASDAQ: AVGO) and Tesla (NASDAQ: TSLA) down one place each to eighth and ninth place within the index. Here are the ranked Top 10 stocks of the S&P 500 as of 30 September 2026.

  • Nvidia (NASDAQ: NVDA) $5,441,663,080,695 (7.95%)
  • Apple (NASDAQ: AAPL) $4,750,332,299,374 (6.94%)
  • Microsoft (NASDAQ: MSFT) $3,778,362,289,992 (5.52%)
  • Amazon (NASDAQ: AMZN) $2,662,650,236,969 (3.89%)
  • Alphabet (A) (NASDAQ: GOOGL) $2,156,130,654,615 (3.15%)
  • Alphabet (C) (NASDAQ: GOOG) $2,012,388,610,974 (2.94%)
  • Meta Platforms (A) (NASDAQ: META) $1,813,887,693,565 (2.65%)
  • Broadcom (NASDAQ: AVGO) $1,642,766,213,040 (2.40%)
  • Tesla (NASDAQ: TSLA) $1,375,816,703,421 (2.01%)
  • Micron Technology (NASDAQ: MU) $1,170,470,926,791 (1.71%)

The S&P 500 index has twelve stocks whose market caps exceed $1 trillion. Berkshire Hathaway (NYSE: BRK.B) and Eli Lilly & Company (NYSE: LLY) round out the membership of the index' trillion-dollar club.

Top ranked Nvidia's market cap increased to $5.44 trillion, accounting for almost 8% of the entire value of the S&P 500 by itself.

References

Standard and Poor. S&P 500 Factsheet. [PDF Document]. 30 September 2026. Accessed 1 October 2026.

SlickCharts. S&P 500 Component Weights. 30 September 2026. Accessed 1 October 2026.

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07 October 2026
A long limousine driving up a bumpy chart showing GDP growth. Image generated by Microsoft Copilot Designer.

The climbing limo method of forecasting future GDP in the United States projects the nation's economic output in the now-finished third quarter of 2025 will be around $32.7 trillion.

That estimate was generated using one of the simplest of forecasting methods. We pulled the just-revised nominal GDP estimates for the second and fourth quarters of 2025s, drew a line through them, then extended the line out three more quarters into the future to project that estimate!

That's how the Climbing Limo forecasting method works, which is just as simple as it sounds. In doing that, we're assuming that whatever momentum the U.S. economy had going in the last half of 2025 will make itself known in the quarter that just came to an end on 30 September 2026.

How well does that method work in practice? You can see for yourself in the following chart shows the climbing limo method's forecast against the recorded nominal GDP over the past 12 quarters for which GDP data has been finalized. At least, as that data has been finalized outside of the BEA's annual revisions like the one they just released covering the period from 2021-Q1 through 2026-Q2, which the chart incorporates across the board for the period it covers.

Climbing Limo GDP Forecast, 2022-Q1 through 2026-Q2, with projections through 2027-Q1

One of the neater things about the Climbing Limo forecasting method is that even when it's way off, as can happen when new periods of recession or recovery take place, it's still giving you important information about how the economy's momentum is changing. Not that it matters for the particular period covered in the chart.

Getting back to 2026-Q3's projected nominal GDP, the Climbing Limo forecast is anticipating very little change from the nominal GDP level of 2026-Q2, although we anticipate the actual GDP level will come in higher than this projection. The initial estimate of 2026-Q3's GDP will be released later this month, but will be revised at least two more times over the next two months as more data is collected before it is relatively settled.

The chart also shows the projections for what the Climbing Limo anticipates for GDP in the fourth quarter of 2026 and the first quarter of 2027. We'll be discussing 2026-Q4's projected GDP in the next edition of this series, before its initial estimate becomes available at the end of January 2027.

References

U.S. Bureau of Economic Analysis. National Income and Product Accounts. Table 1.1.5. Gross Domestic Product. [Online Database]. Accessed 30 September 2026.

Political Calculations. Forecasting GDP Using the Climbing Limo. [Online Tool]. 10 May 2005.

Image Credit: Microsoft Copilot Designer. Prompt: "A long limousine driving up a bumpy chart showing GDP growth".

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About Political Calculations

Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:

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