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Alternative Data terms
Satellite, card, web and location data sold to investors.
Alpha decay The tendency of a trading signal's predictive power and profitability to weaken over time as more traders exploit it. Alternative data Non-traditional data sources, such as satellite imagery or card transactions, used to generate an investing edge. Credit card panel data Anonymized, aggregated card transaction data used to estimate company revenue and consumer spending before official reports. Point-in-time data Data reconstructed exactly as it appeared on a given historical date, including figures that were later revised.