Stock charts differ on TradingView and Finviz – why?|

Looking at the chart for AT&T $T on Finviz and TradingView websites and they are really different.

Finviz shows the stock hanging around $18 since February, while Tradingview shows it around $24 since Feb… that's pretty juicy 35% difference. If I could buy on Finviz and sell on TradingView – I'd retire bilionaire by end of the day.

Anyone got insight?

https://www.tradingview.com/symbols/NYSE-T/

https://finviz.com/quote.ashx?t=T&ty=l&ta=0&p=d&tas=0