Hurst Exponent
get_hurst(quotes, lookback_periods=100)
Parameters
name | type | notes |
---|---|---|
quotes |
Iterable[Quote] | Iterable(such as list or an object having __iter__() ) of the Quote class or its sub-class. • Need help with pandas.DataFrame? |
lookback_periods |
int, default 100 | Number of periods (N ) in the Hurst Analysis. Must be greater than 100. |
Historical quotes requirements
You must have at least N+1
periods of quotes
to cover the warmup periods.
quotes
is an Iterable[Quote]
collection of historical price quotes. It should have a consistent frequency (day, hour, minute, etc). See the Guide for more information.
Return
HurstResults[HurstResult]
- This method returns a time series of all available indicator values for the
quotes
provided. -
HurstResults
is just a list ofHurstResult
. - It always returns the same number of elements as there are in the historical quotes.
- It does not return a single incremental indicator value.
- The first
N
periods will haveNone
values since there’s not enough data to calculate.
HurstResult
name | type | notes |
---|---|---|
date |
datetime | Date |
hurst_exponent |
float, Optional | Hurst Exponent (H ) |
Utilities
See Utilities and Helpers for more information.
Example
from stock_indicators import indicators
# This method is NOT a part of the library.
quotes = get_history_from_feed("SPY")
# Calculate 20-period Hurst
results = indicators.get_hurst(quotes, 20)
About Hurst Exponent
The Hurst Exponent is a random-walk path analysis that measures trending and mean-reverting tendencies of incremental return values. When H
is greater than 0.5 it depicts trending. When H
is less than 0.5 it is is more likely to revert to the mean. When H
is around 0.5 it represents a random walk.
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