Main Street Capital Corporation (MAIN) NYSE

Currency In USD

MAIN Historical Return

If you invested $1000 in Main Street Capital Corporation (MAIN) 10 years ago, it would be worth $3,372.53 as of September 11, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,950.05, while $1000 invested 1 year ago would be worth $871.63. This corresponds to total returns of 237.25%, 95.01%, -12.84%, respectively, with annualized returns of 12.92%, 14.3%, -12.84%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

MAIN Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 11, 2026	56.25	56.22	56.22	56.35	55.9	328,828
September 10, 2026	56.33	55.8	55.8	56.33	55.76	490,509
September 09, 2026	56.52	56.33	56.33	56.74	56.14	383,236
September 08, 2026	57.75	56.66	56.66	57.92	56.64	472,173
September 04, 2026	58	57.68	57.68	58.44	57.65	406,224
September 03, 2026	58	58.07	58.07	58.75	57.23	561,585
September 02, 2026	57.98	57.87	57.87	58.44	57.54	409,738
September 01, 2026	58.71	57.97	57.97	59.13	57.86	454,474
August 31, 2026	58.51	58.92	58.92	59.28	58.44	544,312
August 28, 2026	58.71	58.55	58.55	59.15	58.49	311,828
August 27, 2026	58.35	58.59	58.59	58.92	58.29	334,029
August 26, 2026	58.55	58.43	58.43	58.91	58.35	360,312
August 25, 2026	58.74	58.54	58.54	59.22	58.37	605,177
August 24, 2026	58.27	58.92	58.92	59.05	58.1	341,869
August 21, 2026	58.7	58.29	58.29	58.92	58.28	276,092
August 20, 2026	58.26	58.4	58.4	58.8	58.15	380,863
August 19, 2026	58.13	58.17	58.17	58.7	57.9	444,855
August 18, 2026	58.2	57.81	57.81	58.68	57.81	395,427
August 17, 2026	58.97	58.15	58.15	58.97	58.07	470,621
August 14, 2026	59.25	58.8	58.8	59.32	58.64	429,878
August 13, 2026	58.63	59.23	59.23	59.61	58.63	569,832
August 12, 2026	58.98	58.51	58.51	59.35	58.18	682,987
August 11, 2026	58.32	59.03	59.03	59.37	58.08	850,513
August 10, 2026	58.29	58.52	58.52	58.72	57.75	783,556
August 07, 2026	56.49	58.94	58.94	59.48	56.31	1.32M
August 06, 2026	56.4	56.79	56.79	57.7	56.32	867,218
August 05, 2026	57.14	56.11	56.11	57.38	55.85	530,416
August 04, 2026	56.16	57.15	57.15	57.21	56.03	649,860
August 03, 2026	54.81	55.75	55.75	55.97	54.81	636,494
July 31, 2026	54.6	54.41	54.41	55.14	54.01	450,964
July 30, 2026	54.4	54.44	54.44	54.73	53.33	593,093
July 29, 2026	55.39	54.32	54.32	55.4	54.29	514,382
July 28, 2026	54.02	55.32	55.32	55.4	54	518,841
July 27, 2026	53.47	53.8	53.8	54.34	53.47	377,500
July 23, 2026	53.35	53.12	53.12	53.75	52.76	542,336
July 22, 2026	54.73	53.64	53.64	54.75	53.5	501,243
July 21, 2026	54.55	54.19	54.19	55.3	54.13	859,503
July 20, 2026	55.43	54.59	54.59	55.78	53.69	575,817
July 17, 2026	55.58	55.37	55.37	56.39	55.3	686,840
July 16, 2026	53.4	55.54	55.54	55.68	53.4	805,325
July 15, 2026	53.47	53.41	53.41	53.7	53.02	647,628
July 14, 2026	52.7	53.09	53.09	53.28	52.58	607,469
July 13, 2026	53	52.51	52.51	53.48	52.4	592,625
July 10, 2026	51.89	52.84	52.84	53.2	51.82	578,028
July 09, 2026	51.3	51.67	51.67	51.98	51.01	516,923
July 08, 2026	51.83	51.05	51.05	52.12	50.96	740,976
July 07, 2026	52.26	52.41	52.41	53.08	52.25	802,739
July 06, 2026	52.48	52.29	52.29	53.37	52.28	872,233
July 02, 2026	52.5	51.96	51.96	52.85	51.82	539,094
July 01, 2026	52.01	52.02	52.02	52.95	51.88	678,604
June 30, 2026	51.68	51.88	51.88	52.25	51.45	655,384
June 29, 2026	51.14	51.56	51.56	51.6	50.56	613,848
June 26, 2026	50.06	51.01	51.01	51.47	50.06	704,272
June 25, 2026	49.86	50.19	50.19	50.86	49.82	579,526
June 24, 2026	50.02	49.8	49.8	50.14	49.43	667,256
June 23, 2026	50	50.02	50.02	50.38	49.68	582,092
June 22, 2026	50.72	50.35	50.35	51.44	50.35	578,068
June 18, 2026	51.07	50.97	50.97	51.43	50.68	1.49M
June 17, 2026	51.53	50.61	50.61	51.81	50.5	665,241
June 16, 2026	51.49	51.46	51.46	51.92	51.19	717,458