Rolling beta of symbol vs benchmark (default SPY). BETA = cov(sym_returns, bench_returns) / var(bench_returns). Beta=1 = moves with benchmark, >1 = amplifies, <1 = damps, negative = inverse. Computed on log returns over time_period bars.
x-api-key: ********************curl --location '/api/v1/indicators/beta?symbol=undefined&benchmark=undefined&time_period=undefined&interval=undefined&range=undefined&outputsize=undefined' \
--header 'x-api-key: <api-key>'null