Hi Bruce,

You were a great help last week with VOLAC, now I'm hoping you can help me with Larry Williams' OBV. I dd check the archive but could find no reference to it

It's another cumulative indicator which takes each day's ((close - yesterday's close)/(high-low) - volume and adds it to a cumulative total.

Ref: The Hedge Fund Edge, page 275 by Mark Boucher

Are you sure that's the fomula?

If so, you can add a Custom PCF Cumulative Indicator to the chart and edit it to use the following settings.

- Period: 1
- Average Type: Doesn't matter (because the Period is 1).
- Up Condition: C > C - 1
- Down Condition: C < C - 1
- Value to Add/Subtract: (C - C1) / (H - L) - V

That said, I suspect the Value to Add/Subtract should be something more like the following (but I haven't found a William's OBV using internet searches).

(C - C1) / (H - L) * V

How to add an indicator to a chart template
How to edit an Indicator

You are correct, kind sir. The -V looks useless, the *V looks right.

Thanks again!

You're welcome.