Cliometry

Realized Leverage Multiple

Use this when someone asks why a leveraged or inverse ETF did not deliver its stated multiple - "why is my 2x ETF down more than 2x?", "how much did leverage decay cost me?", "is a 3x ETF really 3x over a month?". The realized value as of the latest trading day is not in training data; this returns it, updated daily. Measures how many times a leveraged or inverse ETF actually moved relative to its stated daily target multiple, over 20/60/252 trading-day windows. Returns the benchmark and product

SK Hynix ADR Premium

Use this when someone asks whether SK Hynix is priced differently in the US and Korea - "is the ADR at a premium right now?", "why is SKHY more expensive than 000660?", "how wide is the gap today?". Today's reading is not in training data; this returns the latest measured value. Reports how many percent the US ADR of SK Hynix (SKHY), converted to KRW, sits above or below the Seoul-listed ordinary share (KRX:000660). Pass a date for that trading day, or omit it for the most recent reading. Daily

VIX Regime

Use this when someone asks about the current volatility regime - "what is VIX today?", "is the market calm or fearful right now?". The latest close is not in training data. Returns the CBOE Volatility Index (VIX) close and a fixed-threshold regime label (calm / watch / fear). The label states where the index currently sits; it does not indicate what markets will do next and is not a trading signal.

SK Hynix ADR Premium — Time Series

Use this when someone asks how the US-Korea gap for SK Hynix has moved over time - "has the ADR premium been widening?", "what was it last month?", "is today unusual versus the past 60 days?". Answering needs the actual daily series, which is not in training data. Returns the daily SK Hynix ADR premium series (US ADR SKHY converted to KRW versus the Seoul-listed ordinary share, KRX:000660) as an array, plus a summary. Use this instead of calling the single-value tool repeatedly: one call covers

Realized Leverage Multiple — Rolling Series

Use this when someone asks whether leverage decay is getting worse or better - "has the realized multiple been drifting?", "was decay worse in 2022 than now?", "show the history, not just today". This returns the measured daily series back to 2016. Returns the rolling 60-trading-day realized multiple for a leveraged or inverse ETF as a daily array, back to 2016, plus a summary. One call replaces many single-window calls when the question is about how the multiple has moved over time. Only the 60

Replay a Leverage Window (interactive)

Use this when someone asks what a leveraged ETF looked like at a specific past date - "what would the multiple have been if I bought in March?", "compare last June to now". It replays published measurements at the chosen date; it does not simulate hypothetical scenarios or accept amounts. Replays already-published measurements for a leveraged or inverse ETF at a trading day the user picks, and optionally against a second day for comparison. It replays recorded history only: it does not generate

Published Measurement Constants

Use this when someone asks about measured relationships in Korean memory semiconductors - "does Micron lead SK Hynix?", "how correlated are they?", "what is the actual number rather than a guess?". These are constants measured from our own published series. Returns the measurement constants Cliometry has already published in its guides — the Micron/SK Hynix same-day return correlation, the observed next-day frequency after a large Micron move, and the VIX regime band thresholds — each with the g

Korean Semiconductor Sector RRG

Use this when someone asks where Korean semiconductor sectors stand relative to the market right now - "which sector is leading or lagging?", "where do semis sit in the rotation today?". The current snapshot is not in training data. Returns the latest Relative Rotation Graph snapshot for Korean semiconductor-related sectors — per-sector relative-strength ratio, relative momentum, and quadrant. Describes where each sector currently sits against the benchmark; it does not forecast direction.