Thornburg Investment Income Builder Class A (TIBAX) NASDAQ

Currency In USD

TIBAX Historical Return

If you invested $1000 in Thornburg Investment Income Builder Fund Class A (TIBAX) 10 years ago, it would be worth $3,129.53 as of August 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $2,132.68, while $1000 invested 1 year ago would be worth $1,301. This corresponds to total returns of 212.95%, 113.27%, 30.1%, respectively, with annualized returns of 12.08%, 16.35%, 30.1%.

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

TIBAX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low
August 21, 2026	38.67	38.67	38.67	38.67	38.67
August 20, 2026	38.61	38.61	38.61	38.61	38.61
August 19, 2026	38.7	38.61	38.61	38.7	38.61
August 18, 2026	38.8	38.8	38.8	38.8	38.8
August 17, 2026	38.9	38.9	38.9	38.9	38.9
August 14, 2026	38.88	38.88	38.88	38.88	38.88
August 13, 2026	38.7	38.88	38.88	38.88	38.7
August 12, 2026	38.6	38.7	38.7	38.7	38.6
August 11, 2026	38.6	38.62	38.62	38.62	38.6
August 10, 2026	38.74	38.74	38.74	38.74	38.74
August 07, 2026	38.65	38.65	38.65	38.65	38.65
August 06, 2026	38.6	38.6	38.6	38.6	38.6
August 05, 2026	38.55	38.55	38.55	38.55	38.55
August 04, 2026	38.49	38.49	38.49	38.49	38.49
August 03, 2026	38.64	38.64	38.64	38.64	38.64
July 31, 2026	38.2	38.2	38.2	38.2	38.2
July 30, 2026	38.15	38.15	38.15	38.15	38.15
July 29, 2026	38.29	38.29	38.29	38.29	38.29
July 28, 2026	38.26	38.26	38.26	38.26	38.26
July 27, 2026	38.04	38.04	38.04	38.04	38.04
July 24, 2026	38.04	38.04	38.04	38.04	38.04
July 23, 2026	38.09	38.09	38.09	38.09	38.09
July 22, 2026	37.87	37.87	37.87	37.87	37.87
July 21, 2026	37.87	37.87	37.87	37.87	37.87
July 20, 2026	37.59	37.59	37.59	37.59	37.59
July 17, 2026	37.78	37.78	37.78	37.78	37.78
July 16, 2026	37.92	37.92	37.92	37.92	37.92
July 15, 2026	37.77	37.77	37.77	37.77	37.77
July 14, 2026	37.68	37.68	37.68	37.68	37.68
July 13, 2026	37.69	37.69	37.69	37.69	37.69
July 10, 2026	37.42	37.42	37.42	37.42	37.42
July 09, 2026	37.45	37.45	37.45	37.45	37.45
July 08, 2026	37.66	37.66	37.66	37.66	37.66
July 07, 2026	37.74	37.74	37.74	37.74	37.74
July 06, 2026	37.74	37.74	37.74	37.74	37.74
July 02, 2026	37.34	37.34	37.34	37.34	37.34
July 01, 2026	37.65	37.65	37.65	37.65	37.65
June 30, 2026	37.81	37.81	37.81	37.81	37.81
June 29, 2026	37.98	37.98	37.98	37.98	37.98
June 26, 2026	38.15	38.15	38.15	38.15	38.15
June 25, 2026	38.15	38.15	38.15	38.15	38.15
June 24, 2026	37.88	37.88	37.88	37.88	37.88
June 23, 2026	37.88	37.88	37.88	37.88	37.88
June 22, 2026	38.18	38.18	38.18	38.18	38.18
June 18, 2026	38.05	38.05	38.05	38.05	38.05
June 17, 2026	38.54	38.54	38.54	38.54	38.54
June 16, 2026	38.5	38.5	38.5	38.5	38.5
June 15, 2026	38.5	38.5	38.5	38.5	38.5
June 12, 2026	38.5	38.5	38.5	38.5	38.5
June 11, 2026	37.82	37.82	37.82	37.82	37.82
June 10, 2026	37.85	37.85	37.85	37.85	37.85
June 09, 2026	37.85	37.85	37.85	37.85	37.85
June 08, 2026	37.57	37.57	37.57	37.57	37.57
June 05, 2026	38.25	38.25	38.25	38.25	38.25
June 04, 2026	38.48	38.48	38.48	38.48	38.48
June 03, 2026	38.56	38.56	38.56	38.56	38.56
June 02, 2026	38.32	38.32	38.32	38.32	38.32
June 01, 2026	38.27	38.27	38.27	38.27	38.27
May 29, 2026	38.27	38.27	38.27	38.27	38.27
May 28, 2026	38.08	38.08	38.08	38.08	38.08