Here we go, this is by %, the worst 30 in the last 50 years. 25 of the 30 happened on GOP watch, and 14 of 30 happened on Trump's watch(es). Not one of them happened under Joe Biden!
October 19, 1987: Black Monday (-22.6%) (Reagan - GOP)
March 16, 2020: COVID-19 Pandemic (-12.9%) (Trump - GOP)
March 12, 2020: COVID-19 Market Panic (-9.99%) (Trump - GOP)
October 26, 1987: Post-Black Monday (-8%) (Reagan - GOP)
October 15, 2008: Financial Crisis (-7.9%) (Bush - GOP)
April 4, 2025: Tariff Turmoil (-7.9%) (Trump - GOP)
December 1, 2008: Recession Declared (-7.7%) (Bush - GOP)
October 9, 2008: Bank Bailout Discussions (-7.3%) (Bush - GOP)
September 29, 2008: Bailout Rejection (-6.98%) (Bush - GOP)
October 27, 1997: Asian Financial Crisis (-7.2%) (Clinton - Democrat)
March 9, 2020: Oil Crash/COVID Fears (-7%) (Trump - GOP)
August 24, 2015: China Slowdown (-6.6%) (Obama - Democrat)
April 3, 2025: Tariff Announcement (-6%) (Trump - GOP)
February 5, 2018: Volatility Spike (-4.6%) (Trump - GOP)
August 21, 2015: Global Selloff (-3.6%) (Obama - Democrat)
June 24, 2016: Brexit Vote Impact (-3.4%) (Obama - Democrat)
May 2, 2018: Trade War Concerns (-3.2%) (Trump - GOP)
October 10, 2008: Financial Crisis Fallout (-3%) (Bush - GOP)
November 20, 2008: Recession Worsens (-2.9%) (Bush - GOP)
March 18, 2020: COVID-19 Continued Panic (-2.85%) (Trump - GOP)
December 14, 2018: Rate Hike Concerns (-2.84%) (Trump - GOP)
August 14, 2019: Yield Curve Inversion (-2.81%) (Trump - GOP)
September 17, 2001: Post-9/11 Reopening Drop (-2.77%) (Bush - GOP)
February 27, 2020: COVID-19 Early Fears (-2.77%) (Trump - GOP)
April 10, 2020: Unemployment Surge (-2.75%) (Trump - GOP)
October 30, 1987: Post-Crash Volatility (-2%) (Reagan - GOP)
March 23, 2020: Stimulus Uncertainty (-1.99%) (Trump - GOP)
January 24, 2014: Emerging Markets Selloff (-1.96%) (Obama - Democrat)
July 31, 1990: Gulf War Fears Begin (-1.95%) (Bush Sr. - GOP)
February 28, 2020: Pandemic Escalation Worries (-1.94%) (Trump - GOP)
That's still a very powerful list to share, and it's fairly unassailable in terms of the logic used.
Here's another good one, the top 11 worst 3-day intervals for the Dow Jones Industrial Average based on percentage drops within the past 50 years. 9 of 11 happened on the GOP's watch, and all the top 7, and 4 of 11 happened under Trump, tied for the worst with GWB. Again, no Joe Biden:
March 16-18, 2020: COVID-19 Market Panic (-28.89%) (Trump - GOP)
October 9-13, 2008: Financial Crisis Fallout (-22.18%) (Bush - GOP)
October 19-21, 1987: Black Monday and Aftermath (-22.6%) (Reagan - GOP)
September 29-October 1, 2008: Bailout Rejection and Recession Fears (-22.9%) (Bush - GOP)
March 9-11, 2020: COVID-19 and Oil Crash (-21.59%) (Trump - GOP)
December 1-3, 2008: Recession Declared (-19.2%) (Bush - GOP)
October 15-17, 2008: Financial Crisis Intensifies (-17.9%) (Bush - GOP)
August 21-25, 2015: China Slowdown and Global Selloff (-13.6%) (Obama - Democrat)
June 24-28, 2016: Brexit Vote Impact (-14.6%) (Obama - Democrat)
February 5-7, 2018: Volatility Spike (-15%) (Trump - GOP)
April 2-4, 2025: Tariff Turmoil (-9.19%) (Trump - GOP)