How Hedge Funds Seek Covid Clues in Alternative Data

For investors, nothing has underscored the immediacy and utility of so-called alternative data as much as the coronavirus lockdowns that throttled economic activity overnight. Traditional sources of market-moving information such as monthly or even weekly government reports were outdated before publication. Those seeking a more real-time pulse turned to the torrents of terabytes produced every day by web searches, tweets, credit-card purchases and satellites for insights on such metrics as foot