OI Proxy PA — Trend ETA

This indicator watches price and volume and treats volume like a simple stand-in for open interest. It flags four states—Long Build-Up, Short Covering, Short Build-Up, and Long Unwinding—based on whether price and volume momentum move together or against each other.

You’ll see a colored arrow plus a centered label with the signal name and an “Estimated Sustain” window in bars, along with one best-guess time. A solid line marks the conservative window; a dotted extension shows the upper bound. The estimate isn’t magic—it learns from your chart’s own history by logging how long past phases lasted, then uses the middle of that distribution for time.

You can tweak thresholds, volume SMA length, cooldown, session filter, and label size/spacing. It uses only your chart’s OHLCV; the News field is just a manual note. Works best on time-based charts; time on range/tick/volume is approximate. Use with your own levels and risk.