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Snapshot from Oct 13, 2026. Predictions are paused, so this will not update until research restarts.
Marsh & McLennan Companies, Inc.
Financial Services · Insurance Brokers
Made on Aug 23, 2026
Price at call $192.01
6-month call Neutral -4.7%
Target by Feb 2027 $183.00
Great value below $150.00
Model v0.6.0

Projection vs Actual (6M history + forecast)

The masterbrain's trajectory (blue, curved through its 7 checkpoints), the deterministic v0.3 control (dashed), and the actual price (green) overlaid from the prediction date forward.
Forecast Change -4.7% to $183.00
Predicted High $192.50 in 2 weeks
Predicted Low $183.00 at 6 months
Max Drawdown (predicted) -4.7%

Forecast

The masterbrain trajectory — 7 dated checkpoints. Short rungs (2w, 1m) show the typical range as the primary claim; point calls run from 2 months out. Every claim still gets graded. Predicted Aug 23, 2026 1:04 pm
Neutral MMC trends range-bound to $183.00 (-4.7% from $192.01) by Feb 2027. decay
ThesisMMC trades well above composite fair value ($123.70) with a negative value lens, but strong quality (71) and risk-on regime support elevated levels near-term. Expect modest drift lower as valuation gravity slowly reasserts over 6 months, tracking the deterministic baseline toward $183.
Invalidated ifA close above $205 on strong earnings or upgrade cycle, or a break below $175 signaling faster mean-reversion, would invalidate this gentle-decay path.
Checkpointtime after the call Datewhen it gets graded Predictedthe claim: closing price Current priceactual close — fills in over time Predicted returnpredicted vs $192.01 at call Conv.brain's confidence, 1–10 Driverwhy the brain put the point here
Prediction made Aug 23, 2026 — $192.01 at call — —The anchor — every point below is measured from this price and date.
2 weeks Sep 6, 2026 $180.99–$203.03 typical range · internal point $192.50 — ±5.7% 7/10 Risk-on regime and low vol keep price anchored
What actually happened: closed $185.74 on Sep 4, 2026 = -3.3% vs the call (predicted +0.3%)  ·  direction HIT (called flat, was flat)  ·  off by 3.5 pp  ·  accuracy 9/10  ·  typical range ±5.7%: inside the band  ·  S&P +0.6% over the same window — beat it
1 month Sep 23, 2026 $176.04–$207.98 typical range · internal point $191.00 — ±8.3% 6/10 Slight drift as valuation overhang persists
What actually happened: closed $172.72 on Sep 21, 2026 = -10.1% vs the call (predicted -0.5%)  ·  direction MISS (called flat, was down)  ·  off by 9.5 pp  ·  accuracy 4/10  ·  typical range ±8.3%: OUTSIDE the band  ·  S&P +1.2% over the same window — beat it
2 months Oct 23, 2026 $188.50 — -1.8% 5/10 Quality premium fades modestly, no catalyst
Matured — awaiting scoring. This checkpoint's date has passed; the next scorer run (score-outcomes.php) records what actually happened.
3 months Nov 23, 2026 $186.00 — -3.1% 5/10 Value gravity begins to pull toward fair value
4 months Dec 23, 2026 $184.50 — -3.9% 4/10 Year-end positioning, negative beta dampens moves
5 months Jan 23, 2027 $183.50 — -4.4% 4/10 Earnings season approaches, mild compression
6 months Feb 23, 2027 $183.00 — -4.7% 4/10 Convergence toward deterministic baseline endpoint

Why ranges on the short rungs? A 102-prediction trial (2026-07-21) showed 2-week point calls carry no information here — three prompt formulations all lost to simply predicting zero — while the stock's own volatility scale (σ×√t) described those windows well. So the short rungs claim what's actually knowable: the typical travel, with earnings timing flagged where the variance will come from. The internal point calls keep being generated and graded to map where real skill begins. Full evidence: stocks/predictions/V0.5-DESIGN.md §8.

Deterministic control (v0.3 value line) targets $182.99 (-4.7%) — both lines get graded at every checkpoint, so the brain has to beat the formula, not just replace it. Brain: claude-opus-4-7.

Weaknesses

0 blocking · 0 degraded · 1 note — follow the chain top-down (cause → effect).
  • Note
    Valuation anchor absent: dcf.
    anchor:dcf

Equation Inputs

Everything feeding the v0.6.0 model — value anchors, the stock's own price behaviour, and the tunable knobs.

Value anchors (from deep analysis)

Price at call$192.01
Composite fair value$123.70
Signal-adjusted fair value$125.31
DCF fair value—
Anchored-PE fair value$142.05
Buy-below (value lens)$150.00
Value net score-69
Value confidence6 / 10
Quality net score+71
Memo confidence7 / 10
Deserved value (base)—
Quality tilt—
Deserved value (used)—
Coherence (value × quality)—

Price behaviour (trailing — shapes the realism line)

Realized volatility (annualized) 1m 27.0%  3m 28.8%  6m 28.0%  
Daily σ (realism noise)1.8%
Beta vs S&P 500 1m -0.75  3m -0.84  5m -0.62  
Trailing 6-month return7.3%

Knobs (equation params)

ladder["w2","m1","m2","m3","m4","m5","m6"]
llm_modelclaude-opus-4-7
max_tokens3000
control_knobs{"w_dcf":0.5,"k_qual":0.200000000000000011102230246251565404236316680908203125,"reach_6m":0.450000000000000011102230246251565404236316680908203125,"coh_floor":0.5,"conf_gain":0.059999999999999997779553950749686919152736663818359375,"noise_phi":0.84999999999999997779553950749686919152736663818359375,"conf_floor":0.40000000000000002220446049250313080847263336181640625,"w_composite":0.5,"noise_window":"3m","flat_band_pct":5,"horizon_months":6,"noise_sigma_fallback":0.01499999999999999944488848768742172978818416595458984375}
Neutral band (%)5
earnings_briefv1
prompt_versionp1
control_versionv0.3.0

Version & Tech Chain

What produced this prediction — stamped on the record so versions can be compared by success rate later.
Model v0.6.0 #271041f8fcd5

Tech composition (what this version is built from)

#ProcessKindGroup
1 Synthesis valuation-synthesis deterministic final
2 Scenario Analysis scenario-valuation deterministic valuation
3 Valuation / Mispricing ext-lens-value llm extended
4 Company Quality ext-lens-quality llm extended
5 Forensic Memo (combiner) ext-forensic-memo llm extended
6 Classification company-classification llm foundation
7 Live Quote fmp-quote data market-data

Inputs used (the runs that fed this prediction)

Upstream processRanLagRun id
company-classification Aug 14, 2026 8d behind MMC-20260814-001204-d7a9
ext-forensic-memo Aug 22, 2026 freshest ext-MMC-20260822-142950-0f35
ext-lens-quality Aug 22, 2026 freshest ext-MMC-20260822-142950-0f35
ext-lens-sentiment Aug 22, 2026 freshest ext-MMC-20260822-142950-0f35
ext-lens-value Aug 22, 2026 freshest ext-MMC-20260822-142950-0f35
scenario-valuation Aug 22, 2026 freshest MMC-20260822-141509-be49
valuation-synthesis Aug 22, 2026 freshest MMC-20260822-141509-be49

Inputs flagged 7d+ behind the freshest one may be stale relative to the rest of the analysis.

Saved History

1 frozen snapshot — the record we score once predictions mature.
MadeModelCallAt callTargetExp.Eval due
Aug 23, 2026 v0.6.0 Neutral $192.01 $183.00 -4.7% Feb 2027 viewing

Not Yet Modeled

What this v0.6.0 forecast deliberately ignores — the work ahead, in plain sight.
  • Scenario probabilities — one path, no bull/bear split (base_prob = 1.0).
  • Intraday / sub-2-week behaviour — the first claim is at 14 days by design (EOD product).
  • Position sizing / portfolio context — the path is a price claim only.