To add Fibonacci lines to a chart in TWS:
- From within a chart, use the Edit menu to select Fibonacci Retracement/Extension.
- Click your mouse at a peak or low point in the chart and pull down/up and to the right across the chart.
- A series of seven colored trendlines are drawn at 0.0%, 23.6%, 38.2%, 50.0%, 61.8%, 76.4% and 100.0%.
You can find more information on Fibonacci Trend Lines in the TWS Users' Guide.