Brian Kilgore

Separated by Physics: A Permanent Space Settlement Measured Against 1776

Settlement advocates invoke the American frontier and the New World as precedents for a polity beyond Earth; the 1776 analogy is the strongest form of that claim, and it has not been tested against what it requires. This paper defines seven criteria for a governance rupture (C1-C...

Twelve Rejections: Pre-Registered Kill Criteria and the Non-Monotone Cost of Clean Data in Retail-Scale Systematic Trading

Quantitative finance publishes what worked. This paper reports thirteen registered systematic strategy candidates that did not — twelve rejections and one partial — each assessed against kill criteria fixed before the data was examined, on provenance-clean data at retail scale. F...

Tail Dependence Without Linear Correlation: Cross-Asset Extreme Co-Movement at Sub-Second Timescales

The Epps effect — the decay of measured cross-asset correlation as the sampling interval shrinks — is among the most robust findings in market microstructure. We reproduce it at tick resolution on five US large-cap technology equities (AAPL, MSFT, NVDA, TSLA, AMZN) and then ask a...

Multifractal Intermittency in US Equity Markets: A Tick-Level Empirical Study

We analyze the statistical microstructure of US equity markets using 2.6 terabytes of tick-level trade data spanning 2,375 trading days (2016–2025) across all US exchanges. At 100-millisecond VWAP resolution, log returns exhibit raw kurtosis exceeding 2,987—approximately 996 time...