Thinkorswim 0DTE Setup Guide

Why Thinkorswim for 0DTE?

Thinkorswim (TOS) is free with a TD Ameritrade account and offers the best options analysis tools of any retail platform. It’s ideal for 0DTE traders.

Initial Setup

1. Download and Install

• Download from tdameritrade.com/thinkorswim
• Create a paper money account for practice
• Fund a live account when ready

2. Configure Charts

• Set up a 1-minute chart for SPX/SPY
• Add volume, VWAP, and RSI indicators
• Create a multi-chart layout (1-min, 5-min, 15-min)
• Enable options chain overlay

3. Options Chain Setup

• Show all Greeks (delta, gamma, theta, vega)
• Display implied volatility
• Show open interest and volume
• Enable IV percentile/rank

4. Watchlist Configuration

Create watchlists for:

• SPX 0DTE options (calls and puts)
• SPY 0DTE options
• VIX and VIX futures
• Key support/resistance levels

5. Alerts Setup

• Price alerts for SPX levels
• Volume alerts for unusual activity
• IV alerts for volatility changes

Essential ThinkScript Studies

GEX Indicator

# Gamma Exposure approximation
input length = 1;
plot GEX = TotalSum(open_interest * gamma * close * close * 0.01);

Max Pain Level

Use the built-in “Options Analysis” tab to calculate max pain for current 0DTE options.

Paper Trading Workflow

1. Open paper money account
2. Set up your charts and options chain
3. Practice entering and exiting trades
4. Track your performance in the journal
5. Graduate to live trading when consistently profitable

To further refine your strategy, consider comparing this approach with the 0DTE Alert Services Compared or exploring the mechanics behind tastytrade vs IBKR for 0DTE. Everything ties back into the foundational concepts available in our Tools Hub.

For real-time confirmation of these structures, many professional traders use the 01DTE dashboard to track institutional positioning.