NASDAQ Composite daily close-to-close log returns (^IXIC, 1971+). Tech-tilted U.S. index; higher volatility regime than the S&P. Block-bootstrap padded to DATA_SIZE since native history is ~14k bars.
Standard analysis sees: heavy-tailed; left-skewed; aperiodic / broadband; time-irreversible (sharp rises, slow decay); nonstationary / drifting. The atlas finds no named structure, but the source is distinctively extreme on Cayley:spectral_gap (+3.8z) — beyond what the standard bank predicts for it.
Cayley:spectral_gap | +3.8z | bank-miss 1.0σ |
Boltzmann:coupling_temporal_variance | +2.7z | bank-miss 1.3σ |
Fractal (Mandelbrot):interior_fraction | +2.4z | bank-miss 1.3σ |








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| Nearest neighbor | Distance | |
|---|---|---|
| Nikkei Returns | 2.90 | |
| BTC Returns | 3.11 | |
| S&P 500 Returns | 3.45 |
Boltzmann › Boltzmann:coupling_temporal_variance | rank 3/298 | 1.7509 |
Cayley › Cayley:growth_exponent | rank 1/298 | 2.1044 |
Cayley › Cayley:spectral_gap | rank 1/298 | 0.0377 |
Cayley › Cayley:saturation_radius | rank 297/298 | 0.0080 |
Fractal (Mandelbrot) › Fractal (Mandelbrot):interior_fraction | rank 3/298 | 0.9797 |
Hyperbolic (Poincaré) › Hyperbolic (Poincaré):mean_hyperbolic_radius | rank 295/298 | 0.1847 |
Nonstationarity › Nonstationarity:ac1_trend | rank 297/298 | -0.4470 |
SL(2,ℝ) (Thurston) › SL(2,ℝ) (Thurston):parabolic_fraction | rank 5/298 | 0.5613 |
Zipf–Mandelbrot (8-bit) › Zipf–Mandelbrot (8-bit):zipf_r_squared | rank 5/298 | 0.9938 |