Viatris (VTRS) had the highest return in August 1989 by a large-cap US stock, returning 50.6%.

Applovin (APP) has had the highest return since January 1, 2024 by a large-cap US stock, returning 765.2%.

The Dow Jones Industrial Average (DJI) had the highest return between November 16, 2021 and November 28, 2022 by a major index, returning -6.2%.

Charles Schwab (SCHW) had the highest return in July 1989 by a large-cap US stock, returning 46.7%.

QQQ had its best month between 2018 and 2024 in April 2020, returning 18.5%.

QQQ had its best month between 2016 and 2024 in April 2020, returning 18.5%.

QQQ had its best month between 2015 and 2024 in April 2020, returning 18.5%.

QQQ had its best quarter between 2007 and 2024 in Q2 2020, returning 34.2%.

Teekay Tankers (TNK) had the highest return between November 10, 2019 and November 25, 2019 by a US stock, returning 975.2%.

Kinross Gold (KGC) had the highest return in June 1989 by a large-cap US stock, returning 21.9%.

Teekay Tankers (TNK) had the highest return between November 15, 2019 and November 25, 2019 by a US stock, returning 759.4%.

Teekay Tankers (TNK) had the highest return between November 15, 2019 and November 27, 2019 by a US stock, returning 751.5%.

Toll Brothers (TOL) had the highest return in May 1989 by a large-cap US stock, returning 43.7%.

MGM Resorts International (MGM) returned 39.1% in May 1989.

Sorry, I don't have the answer to that one.