Papers, wiki, Option Blackboard, encyclopedia, and cards.
We study Anderson localization in a one-dimensional disordered system with long-range correlated hopping decaying as $1/r^{a}$ with complex hopping amplitudes that break time-reversal symmetry in a tunable fashion by varying their argument. We find analytically a corelation-induced algebraic localization that is robust to a finite strength of the time-reversal-symmetry-breaking parameter, beyond which all states delo…
Empirical correlation matrices estimated from financial return time series are contaminated by statistical noise arising from finite sample size, obscuring genuine interactions among assets. We apply spectral decomposition to separate the empirical correlation matrix into a structured component associated with eigenvalues exceeding the Marchenko-Pastur bounds and a random component representing statistical noise. Usi…
In the LIBOR era, banks routinely tied revolving credit facilities to credit-sensitive benchmarks. This study assesses the Across-the-Curve Credit Spread Index (AXI) -- a transparent, transaction-based measure of wholesale bank funding costs -- as a complement to SOFR, summarizing its behavior, construction, and loan-pricing implications. AXI aggregates observable unsecured funding transactions across short- and long…
Artificial transaction generation remains an important source of potential market manipulation on cryptocurrency exchanges, as it may distort reported liquidity and reduce market transparency. This study proposes a diagnostic framework for detecting unusual trading patterns based on complexity and statistical-structure measures derived from high-frequency trade-level data. The analysis considers log-returns, trading …
A new modelling approach that directly prescribes dynamics to the term structure of VIX futures is proposed in this paper. The approach is motivated by the tractability enjoyed by models that directly prescribe dynamics to the VIX, practices observed in interest-rate modelling, and the desire to develop a platform to better understand VIX option implied volatilities. The main contribution of the paper is the derivati…
We test whether five widely promoted retail signal families - trend, oscillator, candlestick, volume, and calendar rules - deliver a positive, economically meaningful, net-of-cost, and survivable edge. Practical viability is the conjunction of three predeclared gates: statistical edge after multiplicity correction, economic viability after trading costs, and finite-bankroll survival under leverage. Exposure-matched b…
Scaling generative inverse and forward rendering to real-world scenarios is bottlenecked by the limited realism and temporal coherence of existing synthetic datasets. To bridge this persistent domain gap, we introduce a large-scale, dynamic dataset curated from visually complex AAA games. Using a novel dual-screen stitched capture method, we extracted 4M continuous frames (720p/30 FPS) of synchronized RGB and five G-…
Retractions serve as an indicator of failures in research integrity, yet most analyses focus on absolute counts rather than risk per paper. We use one of the largest open bibliographic databases to develop incidence metrics normalized by population: retractions per publication and per active author annually. Applying an epidemiological framework that models counts with exposure, we find evidence of exponential growth…
We propose Process-Aware Policy Optimization (PAPO), a method that integrates process-level evaluation into Group Relative Policy Optimization (GRPO) through decoupled advantage normalization, to address two limitations of existing reward designs. Outcome reward models (ORM) evaluate only final-answer correctness, treating all correct responses identically regardless of reasoning quality, and gradually lose the advan…
Generating synthetic financial time series that preserve the statistical properties of real market data is essential for stress testing, risk model validation, and scenario design. Existing approaches struggle to simultaneously reproduce heavy-tailed distributions, negligible linear autocorrelation, and persistent volatility clustering. We developed a hybrid hidden Markov framework that discretized excess growth rate…
Dispersion Trading — Index vol versus single-name vol — a pure play on implied correlation.
Copula Models — Dependence modeling linking marginal distributions — infamous from 2008 structured credit.
Gold Real Yields Correlation — Gold as non-yielding asset inversely sensitive to real rates and USD.
Heston Model — Mean-reverting variance with spot-vol correlation generating smile.
Corridor Variance Swap (Derivatives).
Correlation Trading — Trading implied versus realized correlation in index members.
Implied Correlation Index — Market-implied average correlation among index constituents.
Correspondent Banking (Banking).
Correlation Breakdown — Diversification failing as correlations spike in crises.
Correlation Hub US (Systems).
Correlation Hub Euro Area (Systems).
Correlation Hub UK (Systems).
Correlation Hub Japan (Systems).
Correlation Hub China (Systems).
Correlation Hub EM Asia (Systems).
Correlation Hub LatAm (Systems).
Correlation Hub CEEMEA (Systems).
Correlation Hub Canada (Systems).
Correlation Hub Australia (Systems).
Correlation Hub Nordics (Systems).
Correlation Hub ASEAN (Systems).
Correlation Hub risk-on (Systems).
Correlation Hub risk-off (Systems).
Correlation Hub tightening (Systems).
Correlation Hub easing (Systems).
Correlation Hub stagflation (Systems).
Correlation Hub reflation (Systems).
Correlation Hub disinflation (Systems).
Correlation Hub liquidity-crisis (Systems).
Correlation Hub carry (Systems).
Correlation Hub recession (Systems).
Correlation Hub desk (Systems).
Correlation Hub portfolio (Systems).
Correlation Hub ops (Systems).
Correlation Hub nightly (Systems).
Correlation Hub realtime (Systems).
Correlation Breakdown — Diversification failing as correlations spike in crises.
Correlation Hub ASEAN (Systems).
Correlation Hub Australia (Systems).
Correlation Hub Canada (Systems).
Correlation Hub carry (Systems).
Correlation Hub CEEMEA (Systems).
Correlation Hub China (Systems).
Correlation Hub desk (Systems).
Correlation Hub disinflation (Systems).
Correlation Hub easing (Systems).
Correlation Hub EM Asia (Systems).
Correlation Hub Euro Area (Systems).
Correlation Hub Japan (Systems).
Correlation Hub LatAm (Systems).
Correlation Hub liquidity-crisis (Systems).
Correlation Hub nightly (Systems).
Correlation Hub Nordics (Systems).
Correlation Hub ops (Systems).
Correlation Hub portfolio (Systems).
Correlation Hub realtime (Systems).
Correlation Hub recession (Systems).
Correlation Hub reflation (Systems).
Correlation Hub risk-off (Systems).
Correlation Hub risk-on (Systems).