How to read this section: We test whether three price-based signals —
12-month momentum (trailing stock return), realized volatility (annualized standard deviation of daily returns), and
relative strength (stock return minus S&P 500 return) — predict next-quarter fundamental outcomes:
revenue growth, operating margin change, and ROE change (all year-over-year to remove seasonality).
Each cell shows the Pearson correlation (r) between signal at quarter Q and outcome at quarter Q+1.
Values closer to +1 or −1 indicate stronger predictive relationships. “n” is the number of quarterly observations.
The analysis of quarterly price‑based signals for REX American Resources Corporation over the 2015Q1–2026Q1 horizon reveals a modest predictive relationship between market volatility and fundamental performance, while momentum and relative strength exhibit little explanatory power. The strongest observed correlation is between realized volatility and margin change (r=0.44, p=0.003, n=42), which meets the threshold for notable significance (|r|≥0.4). Other signal‑outcome pairs—such as 12‑month momentum with revenue growth (r=0.09) or ROE change (r=0.30)—remain weak and statistically insignificant at conventional levels. Consequently, price volatility appears to capture some information about future profitability shifts, whereas trend‑following metrics do not reliably forecast top‑line or return‑on‑equity dynamics for this business.
Realized volatility correlates notably with margin change (r=0.44, p=0.003, n=42), meeting the |r|≥0.4 threshold for meaningful predictive power.
All momentum‑based signals are weak: 12M Momentum vs. ROE Change yields r=0.303 (p=0.051) but does not reach conventional significance.
Relative strength shows no predictive relevance; its strongest link is to margin change (r=0.152, p=0.338).
No cross‑company patterns emerge because REX is the sole firm in this dataset.
Limitations: The sample size is limited to 42–45 quarterly observations, reducing statistical power and increasing sensitivity to outliers. Correlations do not imply causation; observed links may reflect common exposure to external macro‑economic regimes rather than a direct predictive mechanism. Signal effectiveness may be regime‑dependent—relationships identified in this historical window might not hold under different market volatility or commodity price environments.
REX
For REX, realized volatility is the only price signal that demonstrates a statistically notable link to a fundamental outcome. The correlation with margin change (r=0.44, p=0.003, n=42) suggests that periods of heightened price swings tend to precede improvements in operating margins, possibly because market participants react to early signs of cost efficiencies or pricing power before they are fully reflected in earnings. In contrast, 12‑month momentum shows weak positive ties to revenue growth (r=0.09) and ROE change (r=0.30), but the p‑values exceed 0.05, indicating that these relationships could be due to random variation. Relative strength likewise fails to predict any of the three fundamentals, with correlations hovering near zero and lacking statistical significance.