https://www.investopedia.com/terms/k/know-sure-thing-kst.asp

The Know Sure Thing (KST) is a momentum oscillator developed by
Martin Pring to make rate-of-change readings easier for traders
to interpret.

Formular:

• KST=(RCMA1×1)+(RCMA2×2) + (RCMA3×3)+(RCMA4×4)

Where:

• RCMA1=10-period SMA of 10-period ROC
• RCMA2=10-period SMA of 15-period ROC
• RCMA3=10-period SMA of 20-period ROC
• RCMA4=15-period SMA of 30-period ROC