This? https://finviz.com/screener.ashx?v=111&f=ind_stocksonly,ta_highlow52w_b20h&ft=4&o=-marketcap&ar=180
A lot of stocks especially on the Nasdaq have been hammered lately. I'm showing about 50% of the components in the NDX below their 100 day MA.
You can easily find such lists on the internet. I think Tesla, Intel, and salesforce are some of the stocks trading 20% below their 12 month. I have seen a few of them though. You just want to know about the 20% ones only?