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iShares 20+ Year Treasury Bond ETF (TLT) vs Bank Reserves
Correlation
of % moves
+39%
In sync
of periods
59%
History
monthsmonths · through 2026-03
59
These move in the same direction about 59% of the time
Their swing sizes only faintly line up (~15% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Unusual right now
Recently looser than usual — the pair is behaving differently than its long-run pattern.
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
58.6%
Headline metric
Movement correlation(i)
+39%
Based on % moves
95% CI
+15% → +59%
Likely range of correlation
Pipeline
Pipeline Summary
59 paired data points survived the monthly window.
Raw input
1,254
807
Normalized
1,254
807
Prepared
61
807
Aligned
59
59
Invalid removed
R²(i)
15.5%
Variance explained
Significance
p < 0.01
Statistical confidence
Data points
59
Thin
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -18 to 18 months.
Selected shift
No shift
Correlation at this shift
+39%
No shift — both series at their actual dates.
58 overlapping points at this shift
Baseline
+39%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+39%
A non-zero peak suggests one series lines up better when shifted against the other.
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Do They Crash Together?
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
-22%
15 periods · Return correlation when both series rose
Both Falling
+69%
19 periods · Return correlation when both series fell
Diverging
-58%
24 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
750
A: 2 / B: 748
Series A
iShares 20+ Year Treasury Bond ETF (TLT)
TLT
Stock · 1,254 raw → 61 prepared
Series B
Bank Reserves
TOTRESNS
FRED · 807 raw → 807 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
0.3394
Linear regression slope.
Intercept
-0.0016
Linear regression intercept.
Saved 2 weeks ago · ID: fred-totresns_stock-tlt_monthly_5y