Kirby (KEX) Market Cap 1996–2026

As of November 13, 2026, Kirby had a market cap of $6.784 billion, which increased by 0.94% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Nov 13, 2026, 4:00 PM ET

Kirby Corp. (KEX)

🌍 United States 📈 NYSE 🏭 Industrials 🏢 Marine Transportation

Latest Market Cap

$6.784B ▲ 0.94%

Start of 2026

$5.972B ▲ 13.60%

1 Year Ago

$5.828B ▲ 16.40%

All-Time High

$8.186B ▼ 17.13%

Loading data...

Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Kirby Market Cap History by Year and Month

Kirby Market Cap History by Year and Month
Year / Month	Market Cap	% Change
2026	$6.784B	▲ 13.60%
November 13, 2026	$6.784B	▼ 11.24%
October 30, 2026	$7.643B	▲ 9.67%
September 30, 2026	$6.969B	▼ 7.49%
August 31, 2026	$7.533B	▲ 7.35%
July 31, 2026	$7.017B	▼ 3.56%
June 30, 2026	$7.276B	▼ 3.22%
May 29, 2026	$7.518B	▼ 6.91%
April 30, 2026	$8.076B	▲ 13.30%
March 31, 2026	$7.128B	▲ 2.37%
February 27, 2026	$6.963B	▲ 9.19%
January 30, 2026	$6.377B	▲ 6.78%
2025	$5.972B	▼ 1.42%
December 31, 2025	$5.972B	▼ 2.94%
November 28, 2025	$6.153B	▲ 6.56%
October 31, 2025	$5.774B	▲ 23.99%
September 30, 2025	$4.657B	▼ 14.14%
August 29, 2025	$5.424B	▲ 1.44%
July 31, 2025	$5.347B	▼ 15.95%
June 30, 2025	$6.362B	▲ 2.50%
May 30, 2025	$6.207B	▲ 14.27%
April 30, 2025	$5.432B	▼ 4.60%
March 31, 2025	$5.694B	▼ 4.37%
February 28, 2025	$5.954B	▼ 4.74%
January 31, 2025	$6.25B	▲ 3.17%
2024	$6.058B	▲ 30.61%
December 31, 2024	$6.058B	▼ 16.57%
November 29, 2024	$7.262B	▲ 9.86%
October 31, 2024	$6.61B	▼ 6.26%
September 30, 2024	$7.052B	▲ 1.56%
August 30, 2024	$6.943B	▼ 2.58%
July 31, 2024	$7.127B	▲ 2.10%
June 28, 2024	$6.98B	▼ 3.58%
May 31, 2024	$7.239B	▲ 13.78%
April 30, 2024	$6.362B	▲ 14.16%
March 28, 2024	$5.573B	▲ 8.66%
February 29, 2024	$5.129B	▲ 11.21%
January 31, 2024	$4.612B	▼ 0.57%
2023	$4.638B	▲ 20.33%
December 29, 2023	$4.638B	▲ 2.25%
November 30, 2023	$4.536B	▲ 2.40%
October 31, 2023	$4.43B	▼ 10.09%
September 29, 2023	$4.927B	▼ 0.04%
August 31, 2023	$4.928B	▲ 1.49%
July 31, 2023	$4.856B	▲ 5.89%
June 30, 2023	$4.586B	▲ 6.82%
May 31, 2023	$4.294B	▼ 0.39%
April 28, 2023	$4.31B	▲ 3.07%
March 31, 2023	$4.182B	▼ 3.93%
February 28, 2023	$4.353B	▲ 2.66%
January 31, 2023	$4.24B	▲ 10.01%
2022	$3.855B	▲ 7.92%
December 30, 2022	$3.855B	▼ 7.79%
November 30, 2022	$4.18B	▲ 0.06%
October 31, 2022	$4.178B	▲ 14.78%
September 30, 2022	$3.64B	▼ 9.38%
August 31, 2022	$4.017B	▲ 5.53%
July 29, 2022	$3.806B	▲ 4.27%
June 30, 2022	$3.65B	▼ 10.35%
May 31, 2022	$4.072B	▲ 3.57%
April 29, 2022	$3.932B	▼ 9.68%
March 31, 2022	$4.353B	▲ 10.99%
February 28, 2022	$3.922B	▲ 0.10%
January 31, 2022	$3.918B	▲ 9.69%
2021	$3.572B	▲ 14.78%
December 31, 2021	$3.572B	▲ 13.79%
November 30, 2021	$3.139B	▼ 0.36%
October 29, 2021	$3.15B	▲ 9.28%
September 30, 2021	$2.883B	▼ 10.51%
August 31, 2021	$3.221B	▼ 7.46%
July 30, 2021	$3.481B	▼ 4.50%
June 30, 2021	$3.645B	▼ 7.16%
May 28, 2021	$3.926B	▲ 2.58%
April 30, 2021	$3.828B	▲ 5.67%
March 31, 2021	$3.622B	▼ 3.63%
February 26, 2021	$3.759B	▲ 23.33%
January 29, 2021	$3.048B	▼ 2.06%
2020	$3.112B	▼ 42.03%
December 31, 2020	$3.112B	▲ 2.43%
November 30, 2020	$3.038B	▲ 31.46%
October 30, 2020	$2.311B	▲ 6.41%
September 30, 2020	$2.172B	▼ 14.77%
August 31, 2020	$2.548B	▼ 8.22%
July 31, 2020	$2.776B	▼ 13.67%
June 30, 2020	$3.216B	▲ 4.45%
May 29, 2020	$3.079B	▼ 3.94%
April 30, 2020	$3.205B	▲ 22.89%
March 31, 2020	$2.608B	▼ 31.79%
February 28, 2020	$3.824B	▼ 12.99%
January 31, 2020	$4.394B	▼ 18.14%
2019	$5.368B	▲ 33.13%
December 31, 2019	$5.368B	▲ 6.13%
November 29, 2019	$5.058B	▲ 6.62%
October 31, 2019	$4.744B	▼ 3.65%
September 30, 2019	$4.924B	▲ 11.70%
August 30, 2019	$4.408B	▼ 6.09%
July 31, 2019	$4.694B	▼ 0.81%
June 28, 2019	$4.732B	▲ 2.09%
May 31, 2019	$4.635B	▼ 5.26%
April 30, 2019	$4.893B	▲ 8.78%
March 29, 2019	$4.498B	▲ 1.20%
February 28, 2019	$4.444B	▼ 0.89%
January 31, 2019	$4.484B	▲ 11.21%
2018	$4.032B	▲ 1.11%
December 31, 2018	$4.032B	▼ 11.78%
November 30, 2018	$4.57B	▲ 6.10%
October 31, 2018	$4.308B	▼ 12.52%
September 28, 2018	$4.924B	▼ 5.78%
August 31, 2018	$5.227B	▲ 4.61%
July 31, 2018	$4.996B	▲ 0.10%
June 29, 2018	$4.991B	▼ 7.83%
May 31, 2018	$5.415B	▲ 6.38%
April 30, 2018	$5.09B	▲ 10.85%
March 29, 2018	$4.592B	▲ 2.60%
February 28, 2018	$4.475B	▲ 0.10%
January 31, 2018	$4.471B	▲ 12.11%
2017	$3.988B	▲ 11.34%
December 29, 2017	$3.988B	▼ 0.74%
November 30, 2017	$4.018B	▼ 4.99%
October 31, 2017	$4.229B	▲ 7.41%
September 29, 2017	$3.937B	▲ 16.47%
August 31, 2017	$3.38B	▲ 2.77%
July 31, 2017	$3.289B	▼ 8.90%
June 30, 2017	$3.611B	▲ 0.91%
May 31, 2017	$3.578B	▼ 6.09%
April 28, 2017	$3.81B	▲ 0.07%
March 31, 2017	$3.808B	▲ 1.97%
February 28, 2017	$3.734B	▲ 7.57%
January 31, 2017	$3.471B	▼ 3.08%
2016	$3.582B	▲ 26.71%
December 30, 2016	$3.582B	▲ 4.81%
November 30, 2016	$3.417B	▲ 7.63%
October 31, 2016	$3.175B	▼ 5.16%
September 30, 2016	$3.348B	▲ 19.31%
August 31, 2016	$2.806B	▼ 4.39%
July 29, 2016	$2.935B	▼ 12.66%
June 30, 2016	$3.36B	▼ 10.97%
May 31, 2016	$3.775B	▲ 9.93%
April 29, 2016	$3.434B	▲ 5.86%
March 31, 2016	$3.244B	▲ 6.48%
February 29, 2016	$3.046B	▲ 11.95%
January 29, 2016	$2.721B	▼ 3.74%
2015	$2.827B	▼ 38.44%
December 31, 2015	$2.827B	▼ 18.98%
November 30, 2015	$3.489B	▼ 1.69%
October 30, 2015	$3.549B	▲ 5.39%
September 30, 2015	$3.368B	▼ 12.84%
August 31, 2015	$3.864B	▼ 3.44%
July 31, 2015	$4.001B	▼ 5.54%
June 30, 2015	$4.236B	▼ 1.01%
May 29, 2015	$4.28B	▼ 2.18%
April 30, 2015	$4.375B	▲ 4.64%
March 31, 2015	$4.181B	▼ 2.62%
February 27, 2015	$4.293B	▲ 4.14%
January 30, 2015	$4.123B	▼ 10.22%
2014	$4.592B	▼ 18.62%
December 31, 2014	$4.592B	▼ 16.30%
November 28, 2014	$5.486B	▼ 13.06%
October 31, 2014	$6.31B	▼ 6.17%
September 30, 2014	$6.725B	▼ 1.21%
August 29, 2014	$6.807B	▲ 2.43%
July 31, 2014	$6.645B	▼ 0.58%
June 30, 2014	$6.684B	▲ 6.11%
May 30, 2014	$6.299B	▲ 9.89%
April 30, 2014	$5.732B	▼ 0.62%
March 31, 2014	$5.768B	▼ 3.09%
February 28, 2014	$5.952B	▲ 4.92%
January 31, 2014	$5.673B	▲ 0.54%
2013	$5.642B	▲ 61.13%
December 31, 2013	$5.642B	▲ 5.14%
November 29, 2013	$5.367B	▲ 6.74%
October 31, 2013	$5.028B	▲ 2.26%
September 30, 2013	$4.917B	▲ 7.68%
August 30, 2013	$4.566B	▼ 4.75%
July 31, 2013	$4.794B	▲ 6.20%
June 28, 2013	$4.514B	▲ 1.87%
May 31, 2013	$4.431B	▲ 4.30%
April 30, 2013	$4.249B	▼ 2.47%
March 28, 2013	$4.356B	▲ 1.08%
February 28, 2013	$4.31B	▲ 7.81%
January 31, 2013	$3.997B	▲ 14.15%
2012	$3.502B	▼ 4.46%
December 31, 2012	$3.502B	▲ 8.23%
November 30, 2012	$3.235B	▲ 0.70%
October 31, 2012	$3.213B	▲ 4.04%
September 28, 2012	$3.088B	▲ 5.00%
August 31, 2012	$2.942B	▼ 0.23%
July 31, 2012	$2.948B	▲ 12.09%
June 29, 2012	$2.63B	▼ 10.80%
May 31, 2012	$2.949B	▼ 20.45%
April 30, 2012	$3.707B	▲ 0.88%
March 30, 2012	$3.674B	▼ 4.12%
February 29, 2012	$3.832B	▲ 2.97%
January 31, 2012	$3.722B	▲ 1.54%
2011	$3.665B	▲ 55.35%
December 30, 2011	$3.665B	▲ 2.43%
November 30, 2011	$3.578B	▲ 4.51%
October 31, 2011	$3.424B	▲ 16.91%
September 30, 2011	$2.929B	▼ 4.38%
August 31, 2011	$3.063B	▼ 2.18%
July 29, 2011	$3.131B	▲ 2.91%
June 30, 2011	$3.043B	▼ 1.36%
May 31, 2011	$3.084B	▲ 1.22%
April 29, 2011	$3.047B	▼ 0.89%
March 31, 2011	$3.075B	▲ 3.52%
February 28, 2011	$2.97B	▲ 18.64%
January 31, 2011	$2.503B	▲ 6.11%
2010	$2.359B	▲ 25.81%
December 31, 2010	$2.359B	▼ 1.31%
November 30, 2010	$2.391B	▲ 3.75%
October 29, 2010	$2.304B	▲ 7.31%
September 30, 2010	$2.147B	▲ 8.06%
August 31, 2010	$1.987B	▼ 4.19%
July 30, 2010	$2.074B	▲ 0.24%
June 30, 2010	$2.069B	▼ 2.90%
May 28, 2010	$2.131B	▼ 6.23%
April 30, 2010	$2.272B	▲ 10.30%
March 31, 2010	$2.06B	▲ 15.55%
February 26, 2010	$1.783B	▲ 2.08%
January 29, 2010	$1.747B	▼ 6.86%
2009	$1.875B	▲ 28.14%
December 31, 2009	$1.875B	▲ 4.50%
November 30, 2009	$1.795B	▼ 1.37%
October 30, 2009	$1.819B	▼ 8.20%
September 30, 2009	$1.982B	▼ 0.58%
August 31, 2009	$1.994B	▲ 0.11%
July 31, 2009	$1.992B	▲ 16.42%
June 30, 2009	$1.711B	▼ 4.88%
May 29, 2009	$1.798B	▲ 8.94%
April 30, 2009	$1.651B	▲ 15.84%
March 31, 2009	$1.425B	▲ 20.87%
February 27, 2009	$1.179B	▼ 8.09%
January 30, 2009	$1.283B	▼ 12.35%
2008	$1.463B	▼ 41.40%
December 31, 2008	$1.463B	▲ 7.67%
November 28, 2008	$1.359B	▼ 26.71%
October 31, 2008	$1.855B	▼ 9.54%
September 30, 2008	$2.05B	▼ 17.14%
August 29, 2008	$2.474B	▼ 4.04%
July 31, 2008	$2.579B	▼ 0.58%
June 30, 2008	$2.594B	▼ 13.60%
May 30, 2008	$3.002B	▲ 1.91%
April 30, 2008	$2.946B	▼ 3.79%
March 31, 2008	$3.062B	▲ 26.42%
February 29, 2008	$2.422B	▼ 1.72%
January 31, 2008	$2.465B	▼ 1.31%
2007	$2.497B	▲ 38.22%
December 31, 2007	$2.497B	▼ 2.86%
November 30, 2007	$2.571B	▲ 5.23%
October 31, 2007	$2.443B	▲ 3.68%
September 28, 2007	$2.356B	▲ 15.31%
August 31, 2007	$2.043B	▼ 5.50%
July 31, 2007	$2.162B	▲ 5.68%
June 29, 2007	$2.046B	▼ 4.07%
May 31, 2007	$2.133B	▲ 5.87%
April 30, 2007	$2.015B	▲ 8.31%
March 30, 2007	$1.86B	▼ 4.24%
February 28, 2007	$1.943B	▲ 3.26%
January 31, 2007	$1.881B	▲ 4.12%
2006	$1.807B	▲ 34.95%
December 29, 2006	$1.807B	▼ 5.30%
November 30, 2006	$1.908B	▲ 2.96%
October 31, 2006	$1.853B	▲ 11.60%
September 29, 2006	$1.66B	▲ 6.82%
August 31, 2006	$1.554B	▼ 8.66%
July 31, 2006	$1.702B	▼ 18.71%
June 30, 2006	$2.094B	▲ 5.75%
May 31, 2006	$1.98B	▲ 1.96%
April 28, 2006	$1.942B	▲ 8.21%
March 31, 2006	$1.794B	▲ 12.71%
February 28, 2006	$1.592B	▲ 9.21%
January 31, 2006	$1.458B	▲ 8.87%
2005	$1.339B	▲ 21.38%
December 30, 2005	$1.339B	▼ 1.94%
November 30, 2005	$1.365B	▲ 4.78%
October 31, 2005	$1.303B	▲ 4.53%
September 30, 2005	$1.247B	▲ 5.34%
August 31, 2005	$1.183B	▼ 2.21%
July 29, 2005	$1.21B	▲ 6.76%
June 30, 2005	$1.134B	▲ 5.76%
May 31, 2005	$1.072B	▲ 4.98%
April 29, 2005	$1.021B	▼ 3.07%
March 31, 2005	$1.053B	▼ 4.23%
February 28, 2005	$1.1B	▲ 0.48%
January 31, 2005	$1.095B	▼ 0.77%
2004	$1.103B	▲ 30.06%
December 31, 2004	$1.103B	▼ 2.31%
November 30, 2004	$1.129B	▲ 9.11%
October 29, 2004	$1.035B	▲ 4.61%
September 30, 2004	$0.989B	▲ 13.29%
August 31, 2004	$0.873B	▼ 6.96%
July 30, 2004	$0.939B	▼ 0.77%
June 30, 2004	$0.946B	▲ 8.95%
May 28, 2004	$0.868B	▲ 2.86%
April 30, 2004	$0.844B	▲ 2.10%
March 31, 2004	$0.827B	▲ 6.91%
February 27, 2004	$0.773B	▼ 3.26%
January 30, 2004	$0.799B	▼ 5.76%
2003	$0.848B	▲ 28.99%
December 31, 2003	$0.848B	▲ 16.55%
November 28, 2003	$0.728B	▲ 2.17%
October 31, 2003	$0.712B	▲ 2.37%
September 30, 2003	$0.696B	▼ 1.28%
August 29, 2003	$0.705B	▲ 7.14%
July 31, 2003	$0.658B	▼ 3.19%
June 30, 2003	$0.679B	▲ 2.55%
May 30, 2003	$0.663B	▲ 5.14%
April 30, 2003	$0.63B	▲ 6.34%
March 31, 2003	$0.593B	▲ 6.32%
February 28, 2003	$0.557B	▼ 7.56%
January 31, 2003	$0.603B	▼ 8.29%
2002	$0.657B	▼ 0.62%
December 31, 2002	$0.657B	▲ 8.26%
November 29, 2002	$0.607B	▲ 7.11%
October 31, 2002	$0.567B	▲ 4.38%
September 30, 2002	$0.543B	▲ 0.17%
August 30, 2002	$0.542B	▼ 1.55%
July 31, 2002	$0.551B	▼ 6.63%
June 28, 2002	$0.59B	▼ 10.44%
May 31, 2002	$0.659B	▼ 2.67%
April 30, 2002	$0.677B	▼ 6.15%
March 28, 2002	$0.721B	▼ 1.38%
February 28, 2002	$0.731B	▲ 11.13%
January 31, 2002	$0.658B	▼ 0.54%
2001	$0.662B	▲ 31.11%
December 31, 2001	$0.662B	▲ 4.86%
November 30, 2001	$0.631B	▲ 2.40%
October 31, 2001	$0.616B	▲ 13.70%
September 28, 2001	$0.542B	▼ 7.79%
August 31, 2001	$0.588B	▼ 1.95%
July 31, 2001	$0.599B	▲ 1.12%
June 29, 2001	$0.593B	▼ 1.40%
May 31, 2001	$0.601B	▲ 13.22%
April 30, 2001	$0.531B	▲ 10.50%
March 30, 2001	$0.481B	▼ 0.14%
February 28, 2001	$0.481B	▲ 2.91%
January 31, 2001	$0.468B	▼ 7.34%
2000	$0.505B	▲ 0.37%
December 29, 2000	$0.505B	▲ 21.74%
November 30, 2000	$0.415B	▼ 8.31%
October 31, 2000	$0.452B	▼ 5.99%
September 29, 2000	$0.481B	▼ 16.71%
August 31, 2000	$0.577B	▲ 5.60%
July 31, 2000	$0.547B	▲ 5.00%
June 30, 2000	$0.521B	▼ 4.03%
May 31, 2000	$0.543B	▲ 6.95%
April 28, 2000	$0.507B	▲ 4.75%
March 31, 2000	$0.484B	▲ 1.94%
February 29, 2000	$0.475B	▲ 4.03%
January 31, 2000	$0.457B	▼ 9.15%
1999	$0.503B	▲ 21.41%
December 31, 1999	$0.503B	▲ 35.99%
November 30, 1999	$0.37B	▲ 1.38%
October 29, 1999	$0.365B	▼ 7.64%
September 30, 1999	$0.395B	▼ 1.83%
August 31, 1999	$0.402B	▼ 2.44%
July 30, 1999	$0.412B	▼ 3.24%
June 30, 1999	$0.426B	▲ 12.20%
May 28, 1999	$0.38B	▼ 0.66%
April 30, 1999	$0.382B	▲ 0.33%
March 31, 1999	$0.381B	▲ 10.44%
February 26, 1999	$0.345B	▼ 2.29%
January 29, 1999	$0.353B	▼ 14.73%
1998	$0.414B	▼ 11.72%
December 31, 1998	$0.414B	▼ 0.48%
November 30, 1998	$0.416B	▼ 6.19%
October 30, 1998	$0.444B	▲ 0.89%
September 30, 1998	$0.44B	▼ 3.30%
August 31, 1998	$0.455B	▼ 1.16%
July 31, 1998	$0.46B	▼ 14.85%
June 30, 1998	$0.54B	▲ 17.47%
May 29, 1998	$0.46B	▼ 12.24%
April 30, 1998	$0.524B	▲ 1.82%
March 31, 1998	$0.515B	▼ 9.59%
February 27, 1998	$0.569B	▲ 12.28%
January 30, 1998	$0.507B	▲ 8.09%
1997	$0.469B	▼ 4.15%
December 31, 1997	$0.469B	▲ 3.87%
November 28, 1997	$0.452B	▼ 6.01%
October 31, 1997	$0.481B	▲ 2.93%
September 30, 1997	$0.467B	▼ 5.15%
August 29, 1997	$0.492B	▲ 8.36%
July 31, 1997	$0.454B	▲ 1.01%
June 30, 1997	$0.45B	▼ 1.97%
May 30, 1997	$0.459B	▲ 3.42%
April 30, 1997	$0.443B	▲ 7.35%
March 31, 1997	$0.413B	▼ 9.89%
February 28, 1997	$0.458B	▼ 3.90%
January 31, 1997	$0.477B	▼ 2.53%
1996	$0.489B	N/A
December 31, 1996	$0.489B	▼ 0.37%
November 29, 1996	$0.491B	▲ 1.92%
October 31, 1996	$0.482B	▲ 10.64%
September 30, 1996	$0.436B	▲ 1.92%
August 30, 1996	$0.427B	▲ 0.78%
July 31, 1996	$0.424B	▼ 4.30%
June 28, 1996	$0.443B	▼ 4.26%
May 31, 1996	$0.463B	— 0.00%
April 30, 1996	$0.463B	▲ 2.92%
March 29, 1996	$0.45B	▼ 6.15%
February 29, 1996	$0.479B	▲ 2.82%
January 31, 1996	$0.466B	N/A

All market cap values reflect closing prices for the period shown.

📊 Kirby Market Cap and Other Industry Peers

Below are selected companies for comparison based on industry, sub-industry, and sector:

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.