NASDAQ:FTEK | Historical Stock Price | FUEL TECH, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1993-09-07 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.38$0.94$2.34$5.80$14.38$35.671993-09-072026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$1.40$1.40557,800——
2021-12-30$1.37$1.37419,000——
2021-12-29$1.38$1.38588,600——
2021-12-28$1.44$1.44268,900——
2021-12-27$1.46$1.46346,100——
2021-12-23$1.53$1.53392,500——
2021-12-22$1.57$1.57332,200——
2021-12-21$1.50$1.50316,000——
2021-12-20$1.43$1.43250,900——
2021-12-17$1.49$1.49280,100——
2021-12-16$1.42$1.42267,000——
2021-12-15$1.47$1.47423,100——
2021-12-14$1.44$1.44269,600——
2021-12-13$1.47$1.47267,900——
2021-12-10$1.54$1.54160,900——
2021-12-09$1.53$1.53176,600——
2021-12-08$1.63$1.63251,400——
2021-12-07$1.56$1.56356,200——
2021-12-06$1.53$1.53277,100——
2021-12-03$1.47$1.47477,400——
2021-12-02$1.57$1.57468,400——
2021-12-01$1.53$1.53640,400——
2021-11-30$1.64$1.64515,100——
2021-11-29$1.66$1.66440,900——
2021-11-26$1.67$1.67383,100——
2021-11-24$1.75$1.75307,800——
2021-11-23$1.71$1.712,235,200——
2021-11-22$1.89$1.89485,400——
2021-11-19$1.95$1.95684,700——
2021-11-18$1.91$1.91860,300——
2021-11-17$2.09$2.09529,400——
2021-11-16$2.10$2.10514,800——
2021-11-15$2.14$2.14993,000——
2021-11-12$2.21$2.213,225,100——
2021-11-11$2.07$2.072,501,200——
2021-11-10$1.86$1.86537,800——
2021-11-09$1.92$1.92599,400——
2021-11-08$1.94$1.94988,400——
2021-11-05$1.85$1.85864,000——
2021-11-04$1.94$1.94559,600——
2021-11-03$1.98$1.98438,100——
2021-11-02$2.01$2.01537,000——
2021-11-01$1.96$1.961,947,700——
2021-10-29$2.06$2.06552,500——
2021-10-28$2.02$2.023,346,100——
2021-10-27$1.93$1.93445,300——
2021-10-26$1.94$1.94799,400——
2021-10-25$2.12$2.12964,200——
2021-10-22$2.06$2.063,603,700——
2021-10-21$2.32$2.326,647,700——
2021-10-20$2.20$2.206,383,100——
2021-10-19$2.32$2.3229,512,700——
2021-10-18$1.90$1.907,069,700——
2021-10-15$1.72$1.72207,300——
2021-10-14$1.74$1.74124,900——
2021-10-13$1.75$1.75190,100——
2021-10-12$1.76$1.76233,400——
2021-10-11$1.70$1.70183,500——
2021-10-08$1.71$1.71392,100——
2021-10-07$1.69$1.69801,400——
2021-10-06$1.67$1.67213,700——
2021-10-05$1.69$1.69396,200——
2021-10-04$1.71$1.71477,200——
2021-10-01$1.75$1.75636,200——
2021-09-30$1.74$1.74775,600——
2021-09-29$1.87$1.872,799,400——
2021-09-28$1.78$1.78397,600——
2021-09-27$1.84$1.84444,900——
2021-09-24$1.74$1.74121,300——
2021-09-23$1.78$1.78338,000——
2021-09-22$1.70$1.70279,400——
2021-09-21$1.70$1.70177,900——
2021-09-20$1.69$1.69285,600——
2021-09-17$1.76$1.76104,500——
2021-09-16$1.79$1.79253,200——
2021-09-15$1.79$1.79360,600——
2021-09-14$1.76$1.76285,000——
2021-09-13$1.78$1.78220,400——
2021-09-10$1.83$1.83480,400——
2021-09-09$1.87$1.87317,600——
2021-09-08$1.81$1.81480,500——
2021-09-07$1.88$1.88595,200——
2021-09-03$1.87$1.87132,400——
2021-09-02$1.89$1.89260,500——
2021-09-01$1.85$1.85360,000——
2021-08-31$1.87$1.87201,000——
2021-08-30$1.85$1.85228,200——
2021-08-27$1.85$1.85206,600——
2021-08-26$1.82$1.82225,400——
2021-08-25$1.85$1.85529,700——
2021-08-24$1.80$1.80329,500——
2021-08-23$1.78$1.78293,600——
2021-08-20$1.75$1.75302,600——
2021-08-19$1.69$1.69309,300——
2021-08-18$1.77$1.77186,900——
2021-08-17$1.77$1.77388,600——
2021-08-16$1.79$1.79477,600——
2021-08-13$1.83$1.83445,400——
2021-08-12$1.91$1.91361,900——
2021-08-11$1.94$1.94474,900——
2021-08-10$2.01$2.01978,800——
2021-08-09$2.00$2.00440,200——
2021-08-06$1.94$1.94228,200——
2021-08-05$1.88$1.88252,600——
2021-08-04$1.87$1.87263,400——
2021-08-03$1.92$1.92331,700——
2021-08-02$2.00$2.00368,000——
2021-07-30$1.94$1.94254,400——
2021-07-29$1.98$1.98473,000——
2021-07-28$1.98$1.98787,100——
2021-07-27$1.97$1.973,362,900——
2021-07-26$1.90$1.903,961,300——
2021-07-23$1.89$1.89223,400——
2021-07-22$1.94$1.94179,700——
2021-07-21$2.01$2.01186,300——
2021-07-20$1.94$1.94201,400——
2021-07-19$1.91$1.91250,900——
2021-07-16$1.87$1.87308,600——
2021-07-15$1.97$1.97203,400——
2021-07-14$1.92$1.92434,300——
2021-07-13$2.06$2.06250,300——
2021-07-12$2.16$2.16193,000——
2021-07-09$2.20$2.20357,500——
2021-07-08$2.07$2.07565,200——
2021-07-07$2.07$2.07639,400——
2021-07-06$2.23$2.23370,400——
2021-07-02$2.28$2.28481,900——
2021-07-01$2.34$2.34636,000——
2021-06-30$2.35$2.35419,300——
2021-06-29$2.38$2.38437,000——
2021-06-28$2.45$2.45576,700——
2021-06-25$2.42$2.42693,300——
2021-06-24$2.50$2.501,726,400——
2021-06-23$2.41$2.41459,000——
2021-06-22$2.35$2.35393,300——
2021-06-21$2.25$2.25638,800——
2021-06-18$2.44$2.441,076,100——
2021-06-17$2.26$2.26429,600——
2021-06-16$2.32$2.32345,900——
2021-06-15$2.35$2.351,001,500——
2021-06-14$2.54$2.54825,300——
2021-06-11$2.48$2.48566,900——
2021-06-10$2.48$2.481,196,200——
2021-06-09$2.56$2.561,137,600——
2021-06-08$2.62$2.622,064,200——
2021-06-07$2.51$2.513,831,800——
2021-06-04$2.93$2.9311,592,400——
2021-06-03$2.15$2.15592,200——
2021-06-02$2.17$2.17523,000——
2021-06-01$2.21$2.21886,400——
2021-05-28$2.09$2.09524,000——
2021-05-27$2.04$2.04646,400——
2021-05-26$1.97$1.97741,700——
2021-05-25$1.85$1.85942,100——
2021-05-24$1.96$1.96857,000——
2021-05-21$2.07$2.07971,600——
2021-05-20$2.09$2.09597,700——
2021-05-19$2.08$2.08384,600——
2021-05-18$2.07$2.071,181,400——
2021-05-17$2.00$2.00853,700——
2021-05-14$2.10$2.102,458,700——
2021-05-13$2.21$2.2144,460,300——
2021-05-12$1.94$1.941,268,900——
2021-05-11$1.93$1.93421,000——
2021-05-10$1.91$1.91362,900——
2021-05-07$2.10$2.10238,000——
2021-05-06$2.00$2.00552,200——
2021-05-05$2.12$2.12244,600——
2021-05-04$2.18$2.18337,700——
2021-05-03$2.17$2.17371,100——
2021-04-30$2.28$2.28316,000——
2021-04-29$2.31$2.31210,300——
2021-04-28$2.41$2.41239,500——
2021-04-27$2.35$2.35361,600——
2021-04-26$2.38$2.38383,100——
2021-04-23$2.32$2.32330,600——
2021-04-22$2.28$2.28370,900——
2021-04-21$2.24$2.24446,500——
2021-04-20$2.16$2.16485,100——
2021-04-19$2.19$2.19654,400——
2021-04-16$2.36$2.36587,200——
2021-04-15$2.33$2.331,034,800——
2021-04-14$2.49$2.49917,600——
2021-04-13$2.46$2.46903,000——
2021-04-12$2.57$2.57667,200——
2021-04-09$2.85$2.85569,900——
2021-04-08$2.86$2.86469,500——
2021-04-07$2.84$2.84516,000——
2021-04-06$2.94$2.94585,000——
2021-04-05$2.89$2.89602,000——
2021-04-01$2.89$2.891,964,200——
2021-03-31$3.14$3.14252,700——
2021-03-30$3.03$3.03419,000——
2021-03-29$2.89$2.89236,300——
2021-03-26$3.00$3.00194,600——
2021-03-25$3.10$3.10263,400——
2021-03-24$3.02$3.02318,700——
2021-03-23$3.19$3.19268,700——
2021-03-22$3.31$3.31278,100——
2021-03-19$3.40$3.40424,600——
2021-03-18$3.49$3.49410,400——
2021-03-17$3.61$3.61441,000——
2021-03-16$3.46$3.46805,100——
2021-03-15$3.82$3.82965,600——
2021-03-12$3.78$3.78635,800——
2021-03-11$3.79$3.791,251,000——
2021-03-10$3.40$3.40431,800——
2021-03-09$3.49$3.49538,100——
2021-03-08$3.20$3.20477,400——
2021-03-05$3.11$3.11803,600——
2021-03-04$3.09$3.09932,800——
2021-03-03$3.44$3.44476,800——
2021-03-02$3.71$3.71463,500——
2021-03-01$3.90$3.90944,000——
2021-02-26$3.52$3.52975,400——
2021-02-25$3.67$3.67723,600——
2021-02-24$3.85$3.85657,800——
2021-02-23$3.74$3.741,154,600——
2021-02-22$4.04$4.041,130,400——
2021-02-19$4.20$4.201,207,800——
2021-02-18$4.15$4.151,184,200——
2021-02-17$4.46$4.461,481,100——
2021-02-16$4.68$4.681,303,800——
2021-02-12$4.69$4.692,793,800——
2021-02-11$5.10$5.101,025,300——
2021-02-10$5.21$5.211,761,400——
2021-02-09$5.49$5.491,685,100——
2021-02-08$5.33$5.331,261,800——
2021-02-05$5.17$5.17734,000——
2021-02-04$5.19$5.191,175,600——
2021-02-03$5.29$5.291,352,600——
2021-02-02$4.99$4.99826,800——
2021-02-01$5.05$5.05810,800——
2021-01-29$5.03$5.03954,300——
2021-01-28$5.18$5.181,249,100——
2021-01-27$5.45$5.452,064,000——
2021-01-26$6.13$6.132,533,600——
2021-01-25$6.44$6.445,216,800——
2021-01-22$5.50$5.501,241,600——
2021-01-21$5.64$5.642,479,900——
2021-01-20$5.43$5.431,164,100——
2021-01-19$5.77$5.771,293,400——
2021-01-15$5.76$5.762,195,900——
2021-01-14$5.80$5.802,395,100——
2021-01-13$5.98$5.982,220,700——
2021-01-12$6.11$6.112,469,500——
2021-01-11$5.95$5.953,960,200——
2021-01-08$5.76$5.765,940,300——
2021-01-07$4.82$4.822,732,800——
2021-01-06$4.34$4.341,386,000——
2021-01-05$4.20$4.201,282,000——
2021-01-04$3.93$3.93675,400——