Trade-Weighted Dollar Cycle Phase Detector
Broad trade-weighted dollar index (FRED DTWEXBGS) plotted with rolling 5-year ±2σ bands. Provides a long-term reference frame to identify the dollar regime - peak, trough, or transition phase - across multi-year cycles since Bretton Woods 1971.
What is it?
This chart plots the broad trade-weighted dollar index (DTWEXBGS, Federal Reserve daily series) with rolling ±2σ statistical bands. The bands provide a long-term reference frame for identifying when the dollar is in extreme territory (above +2σ or below -2σ) versus normal cyclical range. The standard practice for analyzing dollar cycles since the abandonment of Bretton Woods in 1971 uses these statistical thresholds combined with multi-year directional context. Cycle phase reading (peak / strengthening / weakening / trough) is derived from the index's current position relative to the bands plus directional momentum over recent months.
How to read
The horizontal axis is time. The vertical axis is the broad trade-weighted dollar index on natural scale (not log) with rolling reference bands rendered: red upper band at +2σ, green lower band at -2σ. The index area in gold sits between or breaches these bands depending on the regime. A neutral baseline at 100 (January 2006 base of the series) provides additional reference. The BTC overlay on left axis with log scale is available via toggle for cross-asset context. Vertical markers annotate notable dollar cycle events (dollar index peaks, COVID flash, SVB stress, FOMC pivots) when the events overlay is enabled.
Key zones
• Above +2σ band: extreme strong-dollar zone historically coinciding with global macro-liquidity stress (typical duration few weeks to few months) • Between neutral baseline (100) and +2σ band: strengthening regime, typical first half of dollar cycle • Around neutral baseline: cyclical equilibrium without marked direction • Between -2σ band and neutral baseline: weakening regime, typical second half of dollar cycle • Below -2σ band: extreme weak-dollar zone, typically coinciding with global macro-liquidity easing phases
What to observe
• The index breaching the +2σ upper band as entry into extreme strong-dollar territory (historically rare, typically resolves within months) • The index crossing back through the neutral baseline (100) after sustained periods above or below - often coincides with cycle inflection points • Historical BTC-dollar correlation breakdown during liquidity crises (when both move in the same direction temporarily) - see related WTI/BTC correlation metric • Time spent in extreme zones (above +2σ or below -2σ) as cycle maturity indicator - multi-month extreme readings suggest mature cycle phase • Confluence with Trinity Code (macro-liquidity composite) - divergences between the index level and Trinity Code direction can flag regime fragility
Historical context
The dollar trade-weighted index has experienced approximately 3.5 complete cycles since the abandonment of Bretton Woods in August 1971, with durations ranging from 7 to 15 years per cycle. Major historical peaks documented include the 1985 Plaza Accord-induced peak, the 2002 post-dotcom peak, and the 2022 aggressive Fed hiking cycle peak. Historical bottoms include the 1980 stagflation, the 1995 post-Plaza, the 2008 financial crisis, and the 2011 post-QE2. Notable BTC-dollar correlation breakdowns occurred during the March 2020 COVID crash and the March 2023 SVB liquidity stress, when the dollar index and BTC moved positively together for short periods.
Expert notes
The 4-phase classifier is a heuristic simplification of the continuous dollar cycle. The ±2σ rolling thresholds balance reactivity (transition capture) with stability (false positive reduction). Complement with macro-liquidity analysis (Trinity Code metric) and cross-asset correlations for a holistic view. Dollar index-Trinity Code divergences may indicate temporary market dislocations. **Cross-rubric reading** - The dollar cycle phase only captures one dimension of the global macro cycle. Couple with Trinity Code (macro-liquidity composite) and NY Fed recession probability for coherent multi-dimensional reading. The Cycle Intelligence rubric (separate Trinity rubric) covers different cycle frameworks (Bitcoin 4-year halving, Pi Cycle, Loukas) - distinct semantics, not substitutable.
Common mistakes to avoid
Do not treat each phase transition as a short-term operational marker - dollar cycle phases operate on month-to-year horizons. Do not infer a BTC trajectory from the dollar index alone - the BTC-dollar correlation varies by regime (negative correlation in normal phase, sometimes positive during liquidity crises). Do not confuse the current phase (point in time) with phase duration (informative for cycle maturity).
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/macro-intelligence/metrics/macro-v2-dollar-cycle-detector/data?timeframe=90d' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "macro-v2-dollar-cycle-detector",
"timeframe": "1y"
}Required tier: pro. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
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Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.