The BigFour BigShort Indicators

You will often see BigShort traders talk about the BigFour or Main BigShort indicators. While BigShort offers dozens of different datapoints to help you trade, the BigFour are critical to learn. All four are available on the main chart (app.bigshort.com/chart/SPY) and the UF Chart.

The BigFour

Dark Pools — Off-market institutional trades, printed as grey dots directly on the price pane. They're part of the Price indicator itself (no separate checkbox), and clusters of prints often behave as support or resistance.

Net Option Flow (NOF) — The net dollar flow into calls and puts, revealing options-market sentiment in real time. Enable it under ⚙️ Settings → Option Flow → Net Opt Flow $.

Momo (and Shadow Bars and MomoFlow) — Momentum traders like retail or non-algorithmic institutional money, moving at human reaction speed. Enable MomoFlow under ⚙️ Settings → Core Flow.

FastFlow — Algorithmic money, trading far faster than humans can react. Enable FastFlow under ⚙️ Settings → Core Flow, or FastFlow + MomoFlow to see both in one combined pane.

Why these four?

Each of the BigFour watches a different kind of market participant: institutions trading off-exchange (Dark Pools), options traders positioning for direction (NOF), human momentum money (Momo), and algorithms (FastFlow). When several of them agree, the signal is far stronger than any one alone — which is why experienced BigShort traders wait for confluence before acting.

A note on names: FastFlow vs SmartFlow

The indicator now called FastFlow was formerly called SmartFlow. In the current app, SmartFlow 3 and SmartFlow 3.1 are different, Elite-only indicators — separate checkboxes under ⚙️ Settings → BigShort Elite Indicators, and not part of the BigFour. If you read "SmartFlow" in older material (or hear it in the community), it most likely means today's FastFlow.