Market Euphoria Index (MEI)

SentimentPublic current reading

How euphoric or fearful are U.S. market conditions right now?

MEI combines several valuation, volatility, and investor-risk-appetite measures into one 0-100 sentiment reading while keeping additional inputs and weighting proprietary.

Grizzly Bulls uses this indicator as one input in its systematic trading research. It provides context inside a broader rules-based process rather than acting as a standalone trading signal.

What human emotion is driving the market now?

89Euphoria
Market Euphoria Index (MEI)
Indicator typeSentiment
Scale i0 - 100
Available chart historyJan 2, 1992 - Oct 3, 2026

Latest public reading

MEI is 89/100 (Euphoria), based on data as of .

Latest available snapshot · Public definition v1.0 · Updated

MEI is a Grizzly Bulls composite sentiment index. Published inputs include valuation, volatility, and investor-risk-appetite measures such as CARP, NBI, VIX, and margin debt relative to GDP; additional inputs and weighting remain proprietary.

Suggested citation: Grizzly Bulls, “Market Euphoria Index (MEI),” 89/100 (Euphoria), data as of Oct 2, 2026.

Retained public observations

Stable dated readings make it possible to cite a public benchmark as it appeared at a specific point in time. This is a bounded citation record, not the complete historical dataset.

Historical context

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How to interpret MEI

Read MEI as a regime, not a forecast

MEI maps several market-sentiment channels onto a common 0-100 scale. Scores below 15 are labeled Despair, 15 to below 40 Pessimism, 40 through 60 Neutral, above 60 through 85 Optimism, and above 85 Euphoria.

Those labels describe the current mix of market conditions. They do not estimate the probability, timing, or size of the next market move.

Why a composite is useful

Valuation, volatility, and investor risk appetite often disagree. Combining several inputs makes the headline regime less dependent on any one series.

Published inputs include CARP, NBI, VIX, and margin debt relative to GDP. Additional inputs and weighting remain proprietary, so the public methodology explains what the score means without exposing enough detail to reconstruct the complete model.

Where sentiment composites fail

Euphoria can persist while prices continue rising, and despair can deepen before a durable recovery begins. MEI therefore should not be read as a contrarian turning-point trigger.

Its inputs also respond to markets at different speeds. A fast volatility shock can move sentiment before slower valuation or leverage measures have changed much.

What an extreme reading actually tells you

An extreme score says the observable ingredients in the composite are unusually aligned toward fear or optimism on the Grizzly Bulls scale. It does not say that every component is extreme or that history must repeat.

The useful question is how unusual the current regime is relative to the indicator history, which is why the page reports empirical calibration from the history available to the reader.

Empirical calibration from the loaded history

These figures use the normalized observations in the selected chart range, from through . Longer ranges become available only when your account has access to that history.

1,190 observations
Low example
51.0
Apr 8, 2025
Median score
78.5
Selected sample
Average score
76.5
Selected sample
High example
92.4
May 29, 2026
Regime frequency in this sample
RegimeObservationsShare
Despair00.0%
Pessimism00.0%
Neutral605.0%
Optimism88574.4%
Euphoria24520.6%

These frequencies describe the selected historical sample. They are not probabilities for future returns or market turning points.

Published MEI components

The current MEI reading and high-level methodology are public. Recent component history remains part of the subscriber research experience.

Compare the other market lenses

No indicator stands alone. Compare valuation, sentiment, broad macroeconomic conditions, and Treasury curve shape before treating any one reading as meaningful market context.

Compare all indicators