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Long Bonds Break, Gold -3.9%, MongoDB -18%: Morning 10

Bonds — the long end breaks: 30-year at 5.56%, gold -3.9%; MongoDB sinks 18% as Meta moves in

The long-bond fund TLT broke down to 78.62, 0.4% above its 52-week low, with the 10-20 and 7-10 year funds at their lows too - a global move as Japan normalizes rates and European sovereign credit weakens. Gold fell 3.9%, a rare one-day drop. Meta's new enterprise unit took MongoDB's chief executive (-18.5%) and sent per-user software lower; Nvidia rose 1.7%.

In this edition

TLT TLH IEF GLD GDX MDB META TEAM

The Morning 10 Tue, Sep 29, 2026 ~90 seconds 08:00 CET

The ten points

Monday's biggest move was in bonds. The long-bond fund TLT fell to 78.62, 0.4% above its 52-week low after five down sessions, and the 30-year Treasury yield closed at 5.561%, higher than Friday's 5.504%, already the highest since 2004. The 10-20 year and 7-10 year funds sit at their lows as well. The editor reads it as a global move: Japan normalizing its rates and European sovereign credit weakening. Gold fell 3.94% in one day, rare for the metal.

In stocks, Meta started a business unit, Meta Enterprise Platform, to sell its AI agents to companies and hired MongoDB's chief executive to help build it. MongoDB closed 18.46% lower; Atlassian (-4.90%), ServiceNow (-3.07%) and Salesforce (-2.88%) followed. The S&P 500 closed 0.77% lower at 7,683.69, the Nasdaq -0.92%. Nvidia rose 1.68% on its new agent-safety software; Arm fell 8.70%. This morning Tokyo is down 1.29% and Seoul 0.91%.

  1. The long end breaks: TLT 78.62, +0.4% above its 52-week low after five down sessions; the 30-year yield closed at 5.561%
  2. Gold fund GLD -3.94% to 377.91, gold miners GDX -5.36% - a drop of almost 4% in a day is rare for gold
  3. MongoDB -18.46% to 334.68 after Meta hired its chief executive for a new enterprise business
  4. Per-user software sold: Atlassian -4.90%, ServiceNow -3.07%, Salesforce -2.88%, Snowflake -2.33%; the software fund IGV only -0.55%
  5. Nvidia +1.68% to 228.86 on a red day; Arm -8.70%, Intel -5.67%, the chip fund SOXX -2.08%
  6. Cybersecurity up while the market fell: Palo Alto Networks +4.63% to 392.09, CrowdStrike +2.82% to 259.25
  7. Asia lower this morning: Nikkei -1.29%, Kospi -0.91%, Hang Seng -0.62%; Samsung +0.56%, SK Hynix -0.90%, TSMC +0.20%
  8. Oil funds up about 1% on Monday (BNO 60.33, USO 150.01); bitcoin 82,968 this morning; the yen at 157.47 per dollar
  9. AI Board: most Rubin names losing strength (111 of 126), most Ecosystem (21 of 34) and Winners names (34 of 40) getting stronger
  10. Today: Costco and BlackBerry scored at the close; Cintas was paid +4.5%; futures -0.3% (S&P) and -0.4% (Nasdaq)

  1. The long end breaks: TLT 78.62, +0.4% above its 52-week low after five down sessions; the 30-year yield closed at 5.561%

    Context

    TLTTLHIEF

    What
    The long-bond fund TLT fell 0.88% to 78.62, its fifth down session in a row. It trades 4.2% below its 50-day average and 7.7% below its 200-day, 12.5% under its 52-week high and only 0.4% above its low. On the editor's chart this is a clear break below support; the Global letter on Saturday named 74 as the next level. The two shorter funds show the same picture: TLH (10-20 years) -3.7% vs its 50-day and 0.4% off its low, IEF (7-10 years) -3.0% vs its 50-day and 0.3% off its low. The stochastic readings for all three have turned up from deeply oversold levels (TLT %K 8.7) - but the earlier bull crosses in this downtrend have failed, and the price crossed under the 50-day almost three months ago. The 30-year yield closed at 5.561% (Friday 5.504%), the 10-year at 5.240%, the 5-year at 5.068%.
    If
    TLT closes below 78 before Wednesday's core PCE report.
    Why
    The editor reads this as a global move, not a US one: Japan is normalizing its interest rates and European sovereign credit is weakening, so the long end is being sold in several markets at once. Higher long yields lower the value of profits that are years away.
    Then
    Core PCE, the Fed's preferred inflation measure, comes on Wednesday.

    Open the detail →

  2. Gold fund GLD -3.94% to 377.91, gold miners GDX -5.36% - a drop of almost 4% in a day is rare for gold

    Context

    GLDGDX

    What
    Gold fell almost 4% on Monday as yields rose and the dollar held firm (dollar index 101.29) - a move of that size in a single day is rare for gold. The miners fell more than the metal, as they usually do. This morning gold futures are close to Monday's settlement at 4,162.70.
    If
    Gold futures stay under 4,200 through the US open.
    Why
    Gold pays no interest. When long bonds yield 5.5% and more, holding a metal that pays nothing costs more every week - the editor's read is that assets without income are the first to lose in this setting, together with steady growers whose earnings do not grow fast enough to offset falling valuations.
    Then
    Gold and the 30-year yield move on the same data this week.

    Open the detail →

  3. ETF Dispersion Which themes move together and which have decoupled — dispersion across the ETF complex, nightly. See the dispersion →

  4. MongoDB -18.46% to 334.68 after Meta hired its chief executive for a new enterprise business

    Structure

    MDBMETA

    What
    Meta launched Meta Enterprise Platform, a unit that will sell its AI stack - the Muse agent, Meta Business Agent, Muse API and Muse Code - to businesses and developers, and hired MongoDB's chief executive to help run it. MongoDB closed at 334.68, down 18.46% from Friday's 410.44. Meta fell 4.79% to 715.62. A new business costs money before it earns any, and investors priced the cost first.
    If
    MongoDB names a successor quickly and repeats its full-year outlook.
    Why
    A company losing its leader to a much larger rival that wants to sell companies the same data and agent layer is a double question: who runs it, and who it competes with next.
    Then
    MongoDB's next report is on 7 December; until then the stock trades on the leadership answer.

    Open the detail →

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C · point 11 · members

Today in line 11: why the break in long bonds is global, which stocks can carry a lower valuation and which cannot, and why Meta's enterprise move hit per-user software but not security.

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