Thesis · AI Adoption, Productivity & Industry Transformation

Will the S&P 500 ex-financials aggregate trailing-twelve-month operating margin reported for Q4 2026 exceed the Q4 2025 level by at least 50 basis points?

Broad AI adoption in administrative, support, engineering and coordination work lowers opex per unit of revenue fast enough that aggregate index-level operating margins expand by at least half a point year over year, rather than being reinvested into headcount.

6 dated tests · 0 resolved · next on

The tests More theses in AI Adoption, Productivity & Industry Transformation

Who is on each side

The two sides.

Each side in DeepStack’s words, then the voices who argue it, attributed and paraphrased, dated where the date is known. A voice links to its page on DeepStack where one exists.

The case for yes

Firms expand margins from AI

Firms route repeatable coordination, support, coding and back-office work to AI agents and owned or rented inference capacity, holding SG&A and R&D growth below revenue growth. Aggregate operating margin for the large-cap corporate sector steps up measurably, confirming that AI savings are harvested as margin rather than recycled into hiring.

The case for no

AI savings get reinvested into growth, not harvested as margin

Firms that spend AI-driven efficiency gains on serving more customers rather than cutting headcount grow faster, so heavy adopters hire more across engineering and the functions AI was supposed to replace, keeping opex growth in line with revenue growth. Voice-based AI costs roughly as much per day as a human agent, making wholesale automation of customer-facing labor uneconomical in many cases and limiting the SG&A savings that could flow into margin. Under this view, aggregate operating margin in Q4 2026 comes in flat or lower versus Q4 2025 rather than stepping up by 50 basis points or more.

5 voices

Firms expand margins from AI

  1. Kris

    Mercado Libre deploys AI to automate repetitive functions and amplify developer productivity. Human-written code becomes the exception for the 20,000 developers using AI tools. AI-powered search improves conversion and ad click-through rates. An AI…

    Source

  2. Sound Shore Management

    Companies implementing internal AI tools to optimize workflows, such as prior authorization denials reduction, achieve direct cost savings that flow through to operating margins without requiring top-line growth.

    Source

  3. Ruben Dominguez

    Thin margins convert AI savings into outsized profit

    Source

  4. Kevin Gee

    As AI advances, Bending Spoons leverages its technological foundations and talent density to automate development work, improve product optimization, and enhance marketing and monetization. This allows the company to accomplish more with fewer…

    Source

  5. Michael Spencer

    AI-driven automation is a productivity shock that functions as a positive supply shock by lowering marginal costs and expanding potential output. This increases real income, creates disinflationary effects, and is growth-enhancing. Lower prices…

    Source

2 voices

AI savings get reinvested into growth, not harvested as margin

  1. Kris

    Firms that spend an efficiency gain on tackling more customer problems rather than on cutting headcount grow faster, so heavy AI adopters end up hiring more, not less, across engineering and the functions AI was supposed to replace.

    Source

  2. a16z New Media

    Voice-based AI costs roughly $92 per day, comparable to or slightly higher than human agent costs of $90 per day, making automation uneconomical in many cases. This differs from text-based AI like coding agents, which are orders of magnitude…

    Source

What would settle it

The dated tests.

Each test names the public source that settles it, the rule and the day. The Call’s number, the readers’ median and the machines’ numbers stand beside it, as on the Docket.

  1. Mastercard, operating cash flow as a share of revenue, quarter ended September 30, 2026: whether it comes in at or above 43%.

    On the Docket Pendingth104-t04Pre-specified

    Question
    Did the net cash from operating activities of Mastercard for the quarter ended September 30, 2026 come to at or above 43.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Mastercard (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Mastercard reports for the quarter ended September 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 43.0%; no if it is below 43.0%.
    If the source is late, revised or silent
    If Mastercard has not filed by November 16, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Mastercard's operating cash flow as a share of revenue was 40.7% for the quarter ended June 30, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended June 30, 2025, the same line read 56.6%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects yes. Gives the yes answer 58%.

    58%

    0 · no100 · yes

    The machinesClaude 61% · DeepSeek 84%

    Claude: 61%DeepSeek: 84%
    The ladder 3 rungs on one reading, Oct 29, 2026: each asks whether it lands above its threshold, so the Call’s numbers down the rungs sketch where it expects the reading to land.

    1. Above 43%Call 58% · Claude 61% · DeepSeek 84%

      58%

    2. Above 47.5%Call 46% · Claude 48% · DeepSeek 60%

      46%

    3. Above 52%Call 31% · Claude 42% · DeepSeek 45%

      31%

    0 · no50100 · yes

    Your number

  2. Mastercard, operating cash flow as a share of revenue, quarter ended September 30, 2026: whether it comes in at or above 47.5%.

    On the Docket Pendingth104-t05Pre-specified

    Question
    Did the net cash from operating activities of Mastercard for the quarter ended September 30, 2026 come to at or above 47.5% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Mastercard (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Mastercard reports for the quarter ended September 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 47.5%; no if it is below 47.5%.
    If the source is late, revised or silent
    If Mastercard has not filed by November 16, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Mastercard's operating cash flow as a share of revenue was 40.7% for the quarter ended June 30, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended June 30, 2025, the same line read 56.6%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateEither answer fits the Call. Gives the yes answer 46%.

    46%

    0 · no100 · yes

    The machinesClaude 48% · DeepSeek 60%

    Claude: 48%DeepSeek: 60%

    Your number

  3. Mastercard, operating cash flow as a share of revenue, quarter ended September 30, 2026: whether it comes in at or above 52%.

    On the Docket Pendingth104-t06Pre-specified

    Question
    Did the net cash from operating activities of Mastercard for the quarter ended September 30, 2026 come to at or above 52.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Mastercard (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Mastercard reports for the quarter ended September 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 52.0%; no if it is below 52.0%.
    If the source is late, revised or silent
    If Mastercard has not filed by November 16, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Mastercard's operating cash flow as a share of revenue was 40.7% for the quarter ended June 30, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended June 30, 2025, the same line read 56.6%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects no. Gives the yes answer 31%.

    31%

    0 · no100 · yes

    The machinesClaude 42% · DeepSeek 45%

    Claude: 42%DeepSeek: 45%

    Your number

  4. Paychex, operating cash flow as a share of revenue, quarter ended November 30, 2026: whether it comes in at or above 28%.

    On the Docket Pendingth104-t01Pre-specified

    Question
    Did the net cash from operating activities of Paychex for the quarter ended November 30, 2026 come to at or above 28.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Paychex (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Paychex reports for the quarter ended November 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 28.0%; no if it is below 28.0%.
    If the source is late, revised or silent
    If Paychex has not filed by January 18, 2027, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Paychex's operating cash flow as a share of revenue was 26.2% for the quarter ended August 31, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 31, 2025, the same line read 48.1%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects yes. Gives the yes answer 55%.

    55%

    0 · no100 · yes

    The machinesClaude 72% · DeepSeek 90%

    Claude: 72%DeepSeek: 90%
    The ladder 3 rungs on one reading, Dec 18, 2026: each asks whether it lands above its threshold, so the Call’s numbers down the rungs sketch where it expects the reading to land.

    1. Above 28%Call 55% · Claude 72% · DeepSeek 90%

      55%

    2. Above 33%Call 44% · Claude 60% · DeepSeek 30%

      44%

    3. Above 38%Call 30% · Claude 38% · DeepSeek 6%

      30%

    0 · no50100 · yes

    Your number

  5. Paychex, operating cash flow as a share of revenue, quarter ended November 30, 2026: whether it comes in at or above 33%.

    On the Docket Pendingth104-t02Pre-specified

    Question
    Did the net cash from operating activities of Paychex for the quarter ended November 30, 2026 come to at or above 33.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Paychex (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Paychex reports for the quarter ended November 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 33.0%; no if it is below 33.0%.
    If the source is late, revised or silent
    If Paychex has not filed by January 18, 2027, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Paychex's operating cash flow as a share of revenue was 26.2% for the quarter ended August 31, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 31, 2025, the same line read 48.1%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects no. Gives the yes answer 44%.

    44%

    0 · no100 · yes

    The machinesClaude 60% · DeepSeek 30%

    Claude: 60%DeepSeek: 30%

    Your number

  6. Paychex, operating cash flow as a share of revenue, quarter ended November 30, 2026: whether it comes in at or above 38%.

    On the Docket Pendingth104-t03Pre-specified

    Question
    Did the net cash from operating activities of Paychex for the quarter ended November 30, 2026 come to at or above 38.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Paychex (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Paychex reports for the quarter ended November 30, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 38.0%; no if it is below 38.0%.
    If the source is late, revised or silent
    If Paychex has not filed by January 18, 2027, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Paychex's operating cash flow as a share of revenue was 26.2% for the quarter ended August 31, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 31, 2025, the same line read 48.1%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects no. Gives the yes answer 30%.

    30%

    0 · no100 · yes

    The machinesClaude 38% · DeepSeek 6%

    Claude: 38%DeepSeek: 6%

    Your number

A thesis page states one question and both sides of it; DeepStack takes no side in words, and its view is the number it gives each test before the date. Analysis and opinion, not investment advice. Voices are paraphrased from public writing and attributed by name; DeepStack shows no score, ranking or accuracy for any person. Pre-specified means the words were approved on or before the test’s date. Specified after the date means they were written afterwards: such a test is counted and shown, and never rated. An open question has no words yet. The Call’s number is the chance, from 0 to 100, that the Call gives the yes answer to a test’s question, recorded before the test’s date; it is DeepStack’s own reading, not a market price and not advice. The readers’ mark on the same line is the readers’ median, the middle of the numbers signed-in readers gave the test, shown from 25 readers. The machines: Each model read this page and nothing else. The number that counts is the latest one each model gave before the test closed.