Fuel Tech, Inc. (FTEK) NASDAQ

Currency In USD

FTEK Historical Return

If you invested $1000 in Fuel Tech, Inc. (FTEK) 10 years ago, it would be worth $1,053.85 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 $665.05, while $1000 invested 1 year ago would be worth $480.7. This corresponds to total returns of 5.38%, -33.5%, -51.93%, respectively, with annualized returns of 0.53%, -7.83%, -51.93%.

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

FTEK Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 21, 2026	1.41	1.37	1.37	1.41	1.36	36,107
October 20, 2026	1.43	1.38	1.38	1.46	1.36	48,195
October 19, 2026	1.39	1.37	1.37	1.39	1.37	86,987
October 16, 2026	1.4	1.4	1.4	1.43	1.36	37,130
October 15, 2026	1.45	1.42	1.42	1.46	1.3	721,159
October 14, 2026	1.6	1.46	1.46	1.68	1.41	607,384
October 13, 2026	1.64	1.61	1.61	1.65	1.61	92,359
October 12, 2026	1.65	1.65	1.65	1.69	1.62	32,475
October 09, 2026	1.66	1.65	1.65	1.68	1.63	114,741
October 08, 2026	1.67	1.66	1.66	1.7	1.62	84,526
October 07, 2026	1.68	1.67	1.67	1.68	1.61	116,069
October 06, 2026	1.65	1.67	1.67	1.75	1.62	153,854
October 05, 2026	1.64	1.65	1.65	1.71	1.62	71,092
October 02, 2026	1.72	1.66	1.66	1.79	1.64	129,134
October 01, 2026	1.63	1.72	1.72	1.73	1.63	83,100
September 30, 2026	1.64	1.62	1.62	1.74	1.6	61,763
September 29, 2026	1.66	1.64	1.64	1.73	1.6	122,091
September 28, 2026	1.66	1.65	1.65	1.79	1.64	75,195
September 25, 2026	1.7	1.72	1.72	1.8	1.69	60,933
September 24, 2026	1.63	1.72	1.72	1.81	1.6	263,089
September 23, 2026	1.76	1.65	1.65	1.78	1.65	80,321
September 22, 2026	1.82	1.77	1.77	1.82	1.76	93,801
September 21, 2026	1.78	1.85	1.85	1.89	1.77	124,587
September 18, 2026	1.83	1.76	1.76	1.83	1.69	228,529
September 17, 2026	1.79	1.78	1.78	1.82	1.75	157,422
September 16, 2026	1.93	1.75	1.75	1.93	1.71	408,294
September 15, 2026	1.77	1.91	1.91	1.96	1.77	378,886
September 11, 2026	1.69	1.73	1.73	1.78	1.65	443,725
September 10, 2026	1.7	1.63	1.63	1.7	1.6	173,093
September 09, 2026	1.63	1.72	1.72	1.73	1.6	285,586
September 08, 2026	1.55	1.65	1.65	1.68	1.54	500,499
September 04, 2026	1.42	1.55	1.55	1.56	1.42	536,075
September 03, 2026	1.43	1.43	1.43	1.46	1.38	0
September 02, 2026	1.36	1.39	1.39	1.41	1.36	112,234
September 01, 2026	1.41	1.36	1.36	1.43	1.35	149,256
August 31, 2026	1.49	1.42	1.42	1.51	1.41	157,547
August 28, 2026	1.47	1.48	1.48	1.55	1.46	93,699
August 27, 2026	1.44	1.46	1.46	1.5	1.42	95,041
August 26, 2026	1.4	1.43	1.43	1.45	1.38	199,406
August 25, 2026	1.38	1.38	1.38	1.38	1.38	0
August 24, 2026	1.38	1.38	1.38	1.4	1.37	78,869
August 21, 2026	1.37	1.39	1.39	1.42	1.36	148,234
August 20, 2026	1.4	1.38	1.38	1.4	1.37	68,113
August 19, 2026	1.38	1.4	1.4	1.42	1.38	0
August 18, 2026	1.43	1.41	1.41	1.43	1.41	0
August 17, 2026	1.44	1.44	1.44	1.56	1.42	112,330
August 14, 2026	1.45	1.45	1.45	1.49	1.44	113,566
August 13, 2026	1.46	1.45	1.45	1.55	1.45	0
August 12, 2026	1.4	1.47	1.47	1.5	1.4	0
August 11, 2026	1.43	1.4	1.4	1.45	1.39	28,091
August 10, 2026	1.41	1.38	1.38	1.46	1.37	310,529
August 07, 2026	1.38	1.4	1.4	1.42	1.35	0
August 06, 2026	1.43	1.37	1.37	1.46	1.37	224,327
August 05, 2026	1.38	1.45	1.45	1.53	1.34	160,334
August 04, 2026	1.51	1.53	1.53	1.58	1.51	212,745
August 03, 2026	1.41	1.5	1.5	1.54	1.41	91,401
July 31, 2026	1.45	1.41	1.41	1.49	1.41	101,078
July 30, 2026	1.4	1.44	1.44	1.47	1.4	48,832
July 29, 2026	1.45	1.38	1.38	1.46	1.37	95,385
July 28, 2026	1.5	1.45	1.45	1.5	1.4	195,907