UNSTRUCTURED ALPHAMeasure a portfolio

Compare two stocks

MRSH vs APH · data through Oct 2, 2026

MRSH and APH clearly differ on 5 of 19 forces. The widest gap is momentum: in weeks when recent winners beat the stock market by 1 percentage point, MRSH typically moved −0.48% and APH +0.86%.

MRSHAPHBars: 90% ranges. Hollow: could not be told apart from zero.Same figures in the table below.
Economic forceMRSHMarsh McLennanAPHAmphenol
Interest ratesIn weeks when the 10-year Treasury yield rose 0.25 percentage points−0.25%−1.4% to +0.92%Not distinguishable from zero+0.18%−0.94% to +1.3%Not distinguishable from zero
Inflation expectationsIn weeks when 10-year inflation expectations rose 0.25 percentage points+1.3%−1.2% to +3.7%Not distinguishable from zero+1.4%−1.0% to +3.9%Not distinguishable from zero
U.S. dollarIn weeks when the trade-weighted U.S. dollar rose 2%+0.18%−0.85% to +1.2%Not distinguishable from zero−0.47%−1.9% to +1.0%Not distinguishable from zero
Oil and energyIn weeks when the price of oil rose 10%−0.76%−1.3% to −0.22%Tentative−1.1%−1.9% to −0.36%Tentative
Credit spreadsIn weeks when corporate credit spreads widened 0.25 percentage points+0.74%−1.0% to +2.5%Not distinguishable from zero+1.0%−2.0% to +4.1%Not distinguishable from zero
Short-term ratesIn weeks when the 2-year Treasury yield rose 0.25 percentage points+0.74%−0.86% to +2.3%Not distinguishable from zero+0.01%−1.9% to +1.9%Not distinguishable from zero
Market volatilityIn weeks when market volatility (the VIX) rose 5 points−0.06%−0.80% to +0.68%Not distinguishable from zero−1.4%−2.6% to −0.15%Tentative
Mortgage ratesIn weeks when the 30-year mortgage rate rose 0.25 percentage points−0.19%−1.0% to +0.66%Not distinguishable from zero−0.34%−1.6% to +0.90%Not distinguishable from zero
GoldIn weeks when the price of gold rose 5%−0.22%−0.88% to +0.45%Not distinguishable from zero−0.27%−1.1% to +0.58%Not distinguishable from zero
CopperIn weeks when the price of copper rose 5%+0.40%−0.08% to +0.88%Not distinguishable from zero−0.33%−1.0% to +0.29%Not distinguishable from zero
Natural gasIn weeks when the U.S. natural gas price (Henry Hub) rose 10%Clear difference+0.02%0.00% to +0.03%Tentative−0.03%−0.05% to 0.00%Tentative
BitcoinIn weeks when the price of bitcoin rose 10%−0.31%−0.75% to +0.13%Not distinguishable from zero+0.24%−0.52% to +1.0%Not distinguishable from zero
Small vs large companiesIn weeks when small companies beat large ones by 1 percentage point−0.08%−0.28% to +0.11%Not distinguishable from zero+0.31%+0.02% to +0.60%Tentative
Value vs growthIn weeks when value stocks beat growth stocks by 1 percentage pointClear difference+0.40%+0.18% to +0.62%Tentative−0.24%−0.51% to +0.02%Not distinguishable from zero
MomentumIn weeks when recent winners beat the stock market by 1 percentage pointClear difference−0.48%−0.76% to −0.20%Tentative+0.86%+0.44% to +1.3%Clear
EuroIn weeks when the euro rose 2% against the U.S. dollar+0.47%−0.93% to +1.9%Not distinguishable from zero−2.7%−5.0% to −0.38%Tentative
Japanese yenIn weeks when the yen rose 2% against the U.S. dollar+0.02%−0.73% to +0.77%Not distinguishable from zero−0.55%−1.7% to +0.61%Not distinguishable from zero
Emerging marketsIn weeks when emerging-market stocks beat the S&P 500 by 1 percentage pointClear difference−0.56%−0.78% to −0.34%Clear+0.39%−0.02% to +0.80%Not distinguishable from zero
ChinaIn weeks when Chinese stocks beat other emerging markets by 1 percentage pointClear difference+0.25%+0.09% to +0.42%Tentative−0.30%−0.50% to −0.09%Tentative
Each figure is the stock's typical move in a week when the force moved by the stated amount, after accounting for the stock market, with its 90% range beneath. Grey figures could not be told apart from zero. A row is marked a clear difference only when the two 90% ranges do not overlap.

This describes the past, and it is not a forecast. Relationships change, and nothing here is a recommendation to buy, sell or hold any security.

Measure MRSH and APH togetherWhat if? Move a force

Your portfolio, measured the same way

Every figure on these pages is one stock at a time. The app measures a whole portfolio: which forces it is exposed to, which holdings cause it, and how sure the reading is. Free, no account for the first report.