Thornburg Investment Income Builder Fund Class R4 (TIBGX) NASDAQ

Currency In USD

TIBGX Historical Return

If you invested $1000 in Thornburg Investment Income Builder Fund Class R4 (TIBGX) 10 years ago, it would be worth $2,975.3 as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,979.85, while $1000 invested 1 year ago would be worth $1,217.87. This corresponds to total returns of 197.53%, 97.99%, 21.79%, respectively, with annualized returns of 11.52%, 14.63%, 21.79%.

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

TIBGX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low
October 21, 2026	37.29	37.34	37.34	37.34	37.29
October 20, 2026	37.15	37.15	37.15	37.15	37.15
October 19, 2026	37.44	37.15	37.15	37.44	37.15
October 16, 2026	37.22	37.22	37.22	37.22	37.22
October 15, 2026	37.13	37.13	37.13	37.13	37.13
October 14, 2026	37.07	37.07	37.07	37.07	37.07
October 13, 2026	37.2	37.2	37.2	37.2	37.2
October 12, 2026	37.1	37.1	37.1	37.1	37.1
October 09, 2026	37.39	37.39	37.39	37.39	37.39
October 08, 2026	37.5	37.39	37.39	37.5	37.39
October 07, 2026	37.62	37.62	37.62	37.62	37.62
October 06, 2026	37.48	37.62	37.62	37.62	37.48
October 05, 2026	37.27	37.27	37.27	37.27	37.27
October 02, 2026	37.07	37.27	37.27	37.27	37.07
October 01, 2026	37.32	37.07	37.07	37.32	37.07
September 30, 2026	37.59	37.59	37.59	37.59	37.59
September 29, 2026	37.8	37.8	37.8	37.8	37.8
September 28, 2026	38.07	37.8	37.8	38.07	37.8
September 25, 2026	37.84	38.07	38.07	38.07	37.84
September 24, 2026	37.98	37.98	37.98	37.98	37.98
September 23, 2026	38.21	38.21	38.21	38.21	38.21
September 22, 2026	38.5	38.5	38.5	38.5	38.5
September 21, 2026	38.26	38.26	38.26	38.26	38.26
September 18, 2026	38.64	38.64	38.64	38.64	38.64
September 17, 2026	38.43	38.43	38.43	38.43	38.43
September 16, 2026	38.5	38.5	38.5	38.5	38.5
September 15, 2026	38.54	38.5	38.5	38.54	38.5
September 11, 2026	38.5	38.5	38.5	38.5	38.5
September 10, 2026	38.55	38.55	38.55	38.55	38.55
September 09, 2026	38.81	38.81	38.81	38.81	38.81
September 08, 2026	38.74	38.74	38.74	38.74	38.74
September 04, 2026	38.73	38.73	38.73	38.73	38.73
September 03, 2026	38.52	38.73	38.73	38.73	38.52
September 02, 2026	38.69	38.52	38.52	38.69	38.52
September 01, 2026	38.59	38.69	38.69	38.69	38.59
August 31, 2026	38.6	38.59	38.59	38.6	38.59
August 28, 2026	38.55	38.6	38.6	38.6	38.55
August 27, 2026	38.88	38.55	38.55	38.88	38.55
August 26, 2026	38.91	38.88	38.88	38.91	38.88
August 25, 2026	38.76	38.76	38.76	38.76	38.76
August 24, 2026	38.92	38.92	38.92	38.92	38.92
August 21, 2026	38.69	38.69	38.69	38.69	38.69
August 20, 2026	38.64	38.64	38.64	38.64	38.64
August 19, 2026	38.72	38.64	38.64	38.72	38.64
August 18, 2026	38.83	38.83	38.83	38.83	38.83
August 17, 2026	38.93	38.93	38.93	38.93	38.93
August 14, 2026	38.63	38.9	38.9	38.9	38.63
August 13, 2026	38.73	38.91	38.91	38.91	38.73
August 12, 2026	38.63	38.73	38.73	38.73	38.63
August 11, 2026	38.63	38.65	38.65	38.65	38.63
August 10, 2026	38.76	38.76	38.76	38.76	38.76
August 07, 2026	38.68	38.68	38.68	38.68	38.68
August 06, 2026	38.62	38.62	38.62	38.62	38.62
August 05, 2026	38.58	38.58	38.58	38.58	38.58
August 04, 2026	38.52	38.52	38.52	38.52	38.52
August 03, 2026	38.66	38.66	38.66	38.66	38.66
July 31, 2026	38.23	38.23	38.23	38.23	38.23
July 30, 2026	38.17	38.17	38.17	38.17	38.17
July 29, 2026	38.31	38.31	38.31	38.31	38.31
July 28, 2026	38.29	38.29	38.29	38.29	38.29