It's further down the (infinite-scrolling) page, under the title "Why Wait Three Days to Sell Stock?". Looks like much of the material there is older, but this

It's further down the (infinite-scrolling) page, under the title "Why Wait Three Days to Sell Stock?". Looks like much of the material there is older, but this section at least has been updated to mention the change to T+2. (Looks like a more direct link would be https://finance.zacks.com/wait-three-days-sell-stock-11114.html https://finance.zacks.com/wait-three-days-sell-stock-11114.h...)