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IEX vs AXP · data through Oct 2, 2026

On none of the 19 forces measured do IEX and AXP differ by more than the noise in the readings: their 90% ranges overlap every time.

IEXAXPBars: 90% ranges. Hollow: could not be told apart from zero.Same figures in the table below.
Economic forceIEXIDEX CorporationAXPAmerican Express
Interest ratesIn weeks when the 10-year Treasury yield rose 0.25 percentage points−0.03%−0.81% to +0.75%Not distinguishable from zero−0.42%−1.6% to +0.72%Not distinguishable from zero
Inflation expectationsIn weeks when 10-year inflation expectations rose 0.25 percentage points+2.3%−0.22% to +4.9%Not distinguishable from zero+2.3%−0.83% to +5.4%Not distinguishable from zero
U.S. dollarIn weeks when the trade-weighted U.S. dollar rose 2%−0.31%−1.5% to +0.86%Not distinguishable from zero+0.31%−1.3% to +1.9%Not distinguishable from zero
Oil and energyIn weeks when the price of oil rose 10%−1.0%−1.5% to −0.52%Clear−0.55%−1.3% to +0.18%Not distinguishable from zero
Credit spreadsIn weeks when corporate credit spreads widened 0.25 percentage points−1.4%−3.2% to +0.41%Not distinguishable from zero−0.79%−3.1% to +1.5%Not distinguishable from zero
Short-term ratesIn weeks when the 2-year Treasury yield rose 0.25 percentage points−0.73%−3.0% to +1.5%Not distinguishable from zero−1.1%−2.9% to +0.74%Not distinguishable from zero
Market volatilityIn weeks when market volatility (the VIX) rose 5 points−0.08%−0.55% to +0.39%Not distinguishable from zero−1.0%−1.7% to −0.36%Tentative
Mortgage ratesIn weeks when the 30-year mortgage rate rose 0.25 percentage points+0.40%−0.53% to +1.3%Not distinguishable from zero+0.29%−0.75% to +1.3%Not distinguishable from zero
GoldIn weeks when the price of gold rose 5%−0.34%−1.0% to +0.31%Not distinguishable from zero−0.10%−0.80% to +0.59%Not distinguishable from zero
CopperIn weeks when the price of copper rose 5%+0.40%−0.76% to +1.6%Not distinguishable from zero−0.04%−0.58% to +0.50%Not distinguishable from zero
Natural gasIn weeks when the U.S. natural gas price (Henry Hub) rose 10%−0.02%−0.04% to +0.01%Not distinguishable from zero−0.02%−0.07% to +0.03%Not distinguishable from zero
BitcoinIn weeks when the price of bitcoin rose 10%+0.01%−0.60% to +0.62%Not distinguishable from zero−0.27%−0.85% to +0.32%Not distinguishable from zero
Small vs large companiesIn weeks when small companies beat large ones by 1 percentage point+0.78%+0.64% to +0.93%Clear+0.68%+0.48% to +0.88%Clear
Value vs growthIn weeks when value stocks beat growth stocks by 1 percentage point+0.81%+0.63% to +1.0%Clear+0.74%+0.52% to +1.0%Clear
MomentumIn weeks when recent winners beat the stock market by 1 percentage point−0.17%−0.49% to +0.16%Not distinguishable from zero−0.20%−0.53% to +0.13%Not distinguishable from zero
EuroIn weeks when the euro rose 2% against the U.S. dollar−0.81%−3.2% to +1.5%Not distinguishable from zero−1.3%−3.3% to +0.56%Not distinguishable from zero
Japanese yenIn weeks when the yen rose 2% against the U.S. dollar−0.03%−0.76% to +0.70%Not distinguishable from zero−0.39%−1.0% to +0.19%Not distinguishable from zero
Emerging marketsIn weeks when emerging-market stocks beat the S&P 500 by 1 percentage point+0.08%−0.10% to +0.27%Not distinguishable from zero−0.18%−0.43% to +0.06%Not distinguishable from zero
ChinaIn weeks when Chinese stocks beat other emerging markets by 1 percentage point0.00%−0.12% to +0.12%Not distinguishable from zero+0.16%+0.01% to +0.30%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.

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