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Dave Collum, professor / financial commentator at Cornell University (Emeritus), notes that the margin debt-to-nominal GDP ratio, which he believes naturally corrects for inflation, has historically correlated with market peaks. Between 1966 and 1990, this ratio averaged about 0.6, but it currently stands at 5.0. Collum suggests this sharp increase marks a significant departure from prior baselines.
Collum has previously discussed the historical underpinnings of modern investment analysis, directing attention to multi-century research on investing by Ed McQuarry. In separate commentary, he also highlighted that global platinum supply remains tight with projected deficits next year. His recent observations continue to track key market metrics and resource trends.