Why I built it
I want extended session context without adding another permanent price column. The percentage can stay visible until I need the actual price.
How it solves the problem
Available premarket or postmarket percentages appear beside the symbol. Hover the badge to replace its percentage with a white calculated price. Move away and the percentage returns.
For instruments without extended session data, nothing extra is shown at rest. Hover the row to show its native Last price beside the symbol. Existing watchlist columns remain unchanged.
Where the price comes from
Both values come from the same watchlist row. Where available, the script combines regular Last with the absolute extended session change. Otherwise it uses the displayed extended percentage:
extended price = Last × (1 + extended percentage / 100)A rounded percentage can produce an approximate price. Missing price data leaves the valid percentage visible; missing regular prices do not create a placeholder price. The script does not request a separate market data feed.
Browser requirement
This runs on the TradingView website in a desktop browser, not inside the native TradingView Desktop app. Install it as a userscript, not as a Pine indicator. Edge with Tampermonkey is the documented current workflow.
Rows refresh every 1.5 seconds while the tab is visible, and hover reads the row immediately. TradingView layout changes or unavailable feed data can affect the result.
Credits
The supplied source retains its MIT licence notice. Keep that notice when sharing or adapting the script.