OPEN-SOURCE SCRIPT
SPYIX EMA
Variation on idea at url below using SPYIX from BATS instead of VIX
from marketsci.wordpress.com/2008/07/28/the-vix-is-very-predictable/
Aids in identifying changes in volatility direction.
EDIT: just noticed that URL is now password protected. The concept from the author is simple: use EMA and SMA smoothing of the VIX as two signal lines. When they cross you have a change in VIX direction. I simply coded that for SPYIX which is a slightly different (but theoretically similar) index vs VIX. SPYIX provides intraday updates without a subscription so this indicator can be used for intraday tracking.
from marketsci.wordpress.com/2008/07/28/the-vix-is-very-predictable/
Aids in identifying changes in volatility direction.
EDIT: just noticed that URL is now password protected. The concept from the author is simple: use EMA and SMA smoothing of the VIX as two signal lines. When they cross you have a change in VIX direction. I simply coded that for SPYIX which is a slightly different (but theoretically similar) index vs VIX. SPYIX provides intraday updates without a subscription so this indicator can be used for intraday tracking.
开源脚本
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