American Express showed a negative relationship between management tone and quarterly net income.
Does not remain notable after adjusting for hundreds of tests. Why?
The analysis measures a same-filing relationship, not a forecast. Limitations
Each dot represents one 10-Q filing. Points farther right have more positive MD&A tone. Points higher on the chart had stronger year-over-year net income growth, after extreme percent changes are capped. Upper-right and lower-left points indicate tone and earnings moving in the same direction. How to read this chart
Tone and earnings moved in the same direction in 8 of 11 comparable quarters.
8 / 11 direction agreement
How is agreement calculated?| Spearman ρ (exact) | -0.425 (p=0.114) |
|---|---|
| Pearson r | -0.450 (p=0.092) |
| 95% CI (Pearson) | [-0.78, 0.08] |
| FDR q | 0.305 |
| Sample size (n) | 15 · More established sample |
| Agreement | 8 / 11 (8 / 11) |
Secondary to net income because revenue concepts are less comparable across some industries.
Revenue comparison is not used for this industry because companies report revenue-like concepts differently.
Why?Annual samples are shorter and are not mixed into the default quarterly board.
Tone shown to three decimals so small nonzero values stay visible.
| Date | Form | Tone | Net income YoY | Revenue YoY |
|---|---|---|---|---|
| Jul 24, 2026 | 10-Q | +0.091 | +7.8% | n/a |
| Apr 23, 2026 | 10-Q | +0.040 | +15.0% | n/a |
| Oct 17, 2025 | 10-Q | +0.077 | +15.8% | n/a |
| Jul 18, 2025 | 10-Q | +0.106 | -4.3% | n/a |
| Apr 18, 2025 | 10-Q | +0.029 | +6.0% | n/a |
| Oct 18, 2024 | 10-Q | +0.073 | +2.3% | n/a |
| Jul 19, 2024 | 10-Q | +0.073 | +38.7% | n/a |
| Apr 19, 2024 | 10-Q | +0.056 | +34.2% | n/a |
| Oct 20, 2023 | 10-Q | +0.060 | +30.4% | n/a |
| Jul 25, 2023 | 10-Q | +0.118 | +10.7% | n/a |
| Apr 21, 2023 | 10-Q | +0.095 | -13.5% | n/a |
| Oct 21, 2022 | 10-Q | +0.086 | +2.9% | n/a |
| Jul 22, 2022 | 10-Q | +0.107 | -13.9% | n/a |
| Apr 22, 2022 | 10-Q | +0.013 | -6.1% | n/a |
| Oct 22, 2021 | 10-Q | +0.020 | +70.2% | n/a |
| Date | Form | Tone | Net income YoY | Revenue YoY |
|---|---|---|---|---|
| Feb 6, 2026 | 10-K | +0.165 | +7.0% | n/a |
| Feb 7, 2025 | 10-K | +0.068 | +21.0% | n/a |
| Feb 9, 2024 | 10-K | +0.127 | +11.4% | n/a |
| Feb 10, 2023 | 10-K | +0.069 | -6.8% | n/a |
| Feb 11, 2022 | 10-K | +0.082 | +157.1% | n/a |