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Portfolio Engineers

Market Structure

A confirmation dashboard for reading breadth, size participation, style leadership, and risk appetite beneath the surface of the U.S. equity market.

Methodology: Signals are computed using approximately two years (~500 trading days) of daily price history. Trend confirmation is based on the 20/50-day SMA relationship, with additional momentum and persistence diagnostics used to evaluate breadth, size participation, style leadership, and risk appetite.

This is a signal construction framework — not a proxy for full market history or a market forecast.

Trend Framework

Trend is defined by the 20-day SMA relative to the 50-day SMA using trading-day price observations. Persistence tracks how long that state has remained intact without interruption.

What This Page Does

Momentum shows what is leading. Market Structure shows whether that leadership is broad, durable, and confirmed across participation, style, and risk-taking.

Trend Up9
Trend Down1
Flat0
Constructive Bias0
Mixed Bias9
Defensive Bias1
Informational research signals • Not investment advice.
Data as of Market Close (May 20, 2026)
Current structure read: Breadth is broad, size participation is confirmed, style leadership is value-led, and risk appetite is constructive.
Implication: Participation is relatively healthy beneath the surface, suggesting stronger confirmation behind the market than headline indexes alone would imply.
Breadth
Broad

Equal-weight participation is confirming the benchmark, which usually points to healthier internal breadth rather than a move carried only by the largest names.

Drivers: VOO Up, RSP Up
Size Participation
Confirmed

Mid-cap and small-cap participation are both constructive, which tends to confirm broader domestic risk appetite.

Drivers: MDY Up, IWM Up
Style Leadership
Value-led

Value is firmer than growth, which usually points to a more cyclical or mean-reversion driven leadership profile.

Drivers: IWF Down, IWD Up, MTUM Up
Risk Appetite
Constructive

Both defensive quality and speculative beta are participating, which often reflects a more constructive market, though not necessarily an indiscriminate one.

Drivers: QUAL Up, USMV Up, SPHB Up
Market structure is a confirmation layer, not a forecast. Narrow benchmark strength can persist for a time, while breadth and size participation can improve before headline indexes fully reflect it.
Breadth & Benchmark
Is benchmark performance being confirmed beneath the surface?
VOO · S&P 500
Cap-weighted large-cap benchmark.
Up
Up 20dBias: Mixed
Interpretation

This module tests whether benchmark performance is being supported by broader participation rather than concentrated leadership alone.

Relative spread
VOO is leading RSP by 7.6% over the 60d window.
Longer-term spread (365d): VOO leads by 13.4%.
RSP · Equal Weight S&P 500
Breadth check beneath cap-weight concentration.
Up
Up 17dBias: Mixed
Size Participation
Are mid-caps and small-caps participating in the move?
MDY · Mid Caps
Mid-cap participation.
Up
Up 21dBias: Mixed
Interpretation

This module checks whether participation is extending beyond large-cap leadership into the broader domestic equity market.

Relative spread
IWM is leading MDY by 4.6% over the 60d window.
Longer-term spread (365d): IWM leads by 8.0%.
IWM · Small Caps
Small-cap participation.
Up
Up 22dBias: Mixed
Style Leadership
Is leadership coming from growth, value, or trend-following persistence?
IWF · Growth
Long-duration growth leadership.
Down
Down 16dBias: Defensive
Interpretation

This module tests whether leadership is being driven by long-duration growth, cheaper cyclical value exposure, or reinforced by trend-following factor strength.

Relative spread
IWD is leading IWF by 76.7% over the 60d window.
Longer-term spread (365d): IWD leads by 87.5%.
Momentum context
MTUM · Momentum
Up
Up 25dBias: Mixed
IWD · Value
Value and cyclical style leadership.
Up
Up 20dBias: Mixed
Risk Regime
Is the market rewarding quality and defense, or speculation and beta?
QUAL · Quality
Up
Up 19dBias: Mixed
USMV · Low Volatility
Up
Up 7dBias: Mixed
Interpretation

This module compares defensive equity preference against speculative beta to gauge whether the market is rewarding caution, risk-taking, or something in between.

Current tilt
Constructive
Relative spread
SPHB is leading USMV by 12.4% over the 60d window.
Longer-term spread (365d): SPHB leads by 43.7%.
SPHB · High Beta
Speculative risk appetite.
Up
Up 22dBias: Mixed
Signal Matrix
Full cross-sectional view of all structure sleeves and their current state at a glance.
TickerSleeveTrendPersistenceBiasRole
VOO
S&P 500UpUp 20dMixedCap-weighted large-cap benchmark.
RSP
Equal Weight S&P 500UpUp 17dMixedBreadth check beneath cap-weight concentration.
MDY
Mid CapsUpUp 21dMixedMid-cap participation.
IWM
Small CapsUpUp 22dMixedSmall-cap participation.
IWF
GrowthDownDown 16dDefensiveLong-duration growth leadership.
IWD
ValueUpUp 20dMixedValue and cyclical style leadership.
MTUM
MomentumUpUp 25dMixedTrend-following factor confirmation.
QUAL
QualityUpUp 19dMixedProfitability and balance-sheet strength.
USMV
Low VolatilityUpUp 7dMixedDefensive equity preference.
SPHB
High BetaUpUp 22dMixedSpeculative risk appetite.
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© 2026 Portfolio Engineers. Content is provided for research and educational purposes only and should not be interpreted as investment advice or a recommendation to buy or sell any security. Hypothetical or model results may not reflect actual trading outcomes.