Asset Correlation Matrix

📊 What is this dashboard?

Two correlation matrices covering 45 ETFs and 35 mutual funds — showing how closely pairs move together over a selected time window. Spans US equities, sectors, international, bonds, commodities, currencies, and target-date funds.

Correlation ranges from -1.0 (perfect inverse) to +1.0 (perfectly in lockstep). Near 0 means the assets move independently.

🎨 Reading the colour scale

Dark red = assets moving closely together. Dark blue = opposite directions. White = little relationship.

📅 Time windows

• 1 Month (21 trading days) — medium-term; most reliable for portfolio decisions.
• 1 Week (5 trading days) — very short-term; sensitive to recent events, changes rapidly.

⇅ Top & Bottom Pairs tab

Shows the 5 most and 5 least correlated pairs. Toggle between ETFs and Mutual Funds. Click any row to open the rolling 21-day correlation chart for that pair.

🔍 Compare Two tab

Type any two tickers from either dataset to see their rolling 21-day correlation over the full 91-day window, with current, average, min and max statistics.

💰 Practical uses

• Diversification: Low or negative correlation reduces portfolio volatility.
• Concentration risk: Correlation above +0.8 means less diversification than it appears.
• Hedging: GLD and TLT often negatively correlate with equities in risk-off periods.
• Regime detection: Correlations rising sharply across the board signals a stress/risk-off regime.

⏰ Data and refresh

Prices from Yahoo Finance via yfinance. Uses 91 trading days of daily closes, with weekends and holidays forward-filled. Cached in Upstash Redis and refreshed nightly via cron. Click Refresh in the header to update manually after market close.