NASDAQ:DFTX | Historical Stock Price | Definium Therapeutics, 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
2016-11-15 to 2026-09-04
Data captured

Stock Price Chart

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

$0.01$0.08$0.41$2.16$11.54$61.582016-11-152026-08-27

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

View year

Historical Stock Price — 2026

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$38.0452,008
2026-09-03$39.1090,171
2026-09-02$38.24100,452
2026-09-01$39.2880,748
2026-08-31$40.7798,691
2026-08-28$43.4895,904
2026-08-27$43.82$43.821,416,900$44.3177,864
2026-08-26$43.77$43.771,599,200$44.5892,954
2026-08-25$44.81$44.811,269,800$43.3956,983
2026-08-24$43.27$43.271,726,800$44.4493,637
2026-08-21$44.91$44.911,354,500$45.8767,836
2026-08-20$45.40$45.401,661,500$45.3186,286
2026-08-19$45.82$45.821,748,000$47.1074,229
2026-08-18$46.18$46.182,009,200$45.34103,557
2026-08-17$45.26$45.262,278,200$42.3588,726
2026-08-14$42.63$42.631,709,500$43.1990,731
2026-08-13$43.90$43.902,664,400$44.40127,669
2026-08-12$42.79$42.797,635,600$47.27281,174
2026-08-11$40.91$40.913,362,200$45.52181,931
2026-08-10$45.15$45.152,311,100$45.6898,075
2026-08-07$46.14$46.142,547,300$46.69173,655
2026-08-06$46.14$46.141,782,200$44.45100,842
2026-08-05$44.39$44.391,562,100$42.6093,543
2026-08-04$42.32$42.321,862,100$42.88106,338
2026-08-03$41.79$41.791,902,500$42.5670,545
2026-07-31$43.52$43.521,965,900$44.76107,087
2026-07-30$44.49$44.491,805,700$42.2879,106
2026-07-29$42.16$42.161,763,300$41.8394,430
2026-07-28$41.96$41.961,948,800$41.9991,882
2026-07-27$42.65$42.651,556,400$43.5672,629
2026-07-24$43.17$43.171,118,200$44.0552,014
2026-07-23$42.93$42.93774,900$42.9624,661
2026-07-22$43.67$43.671,239,600$44.5446,653
2026-07-21$45.08$45.081,498,500$42.7465,664
2026-07-20$42.80$42.801,222,000$44.6760,486
2026-07-17$44.29$44.291,486,800
2026-07-16$44.10$44.103,460,100
2026-07-15$45.66$45.661,437,000
2026-07-14$45.98$45.981,416,300
2026-07-13$43.65$43.651,807,200
2026-07-10$47.07$47.072,555,800
2026-07-09$48.45$48.453,017,600
2026-07-08$45.32$45.322,616,800
2026-07-07$44.48$44.482,588,200
2026-07-06$44.33$44.332,075,400
2026-07-02$44.19$44.192,362,000
2026-07-01$43.40$43.403,112,900
2026-06-30$47.04$47.044,323,300
2026-06-29$46.55$46.554,674,800
2026-06-26$44.95$44.9512,213,500
2026-06-25$44.79$44.798,278,700
2026-06-24$42.13$42.1312,466,100
2026-06-23$36.18$36.185,640,900
2026-06-22$36.67$36.6720,142,900
2026-06-18$24.48$24.482,629,900
2026-06-17$24.43$24.431,583,100
2026-06-16$24.16$24.161,200,500
2026-06-15$23.77$23.771,386,800
2026-06-12$24.75$24.751,727,300
2026-06-11$24.11$24.112,369,500
2026-06-10$23.24$23.242,538,900
2026-06-09$22.95$22.951,969,800
2026-06-08$23.02$23.023,644,700
2026-06-05$23.55$23.554,182,100
2026-06-04$24.59$24.592,564,300
2026-06-03$23.59$23.592,293,700
2026-06-02$22.86$22.862,286,300
2026-06-01$24.06$24.061,735,700
2026-05-29$24.19$24.192,307,800
2026-05-28$23.48$23.483,158,100
2026-05-27$23.52$23.521,780,600
2026-05-26$22.88$22.881,349,600
2026-05-22$22.50$22.501,277,600
2026-05-21$22.65$22.652,118,300
2026-05-20$20.87$20.871,492,700
2026-05-19$20.02$20.021,680,900
2026-05-18$20.48$20.481,343,300
2026-05-15$20.99$20.991,435,300
2026-05-14$21.35$21.351,086,700
2026-05-13$22.01$22.011,483,700
2026-05-12$21.16$21.161,013,700
2026-05-11$21.40$21.401,482,900
2026-05-08$22.05$22.052,208,800
2026-05-07$23.20$23.201,809,400
2026-05-06$23.42$23.421,512,900
2026-05-05$22.40$22.401,042,600
2026-05-04$21.75$21.751,064,400
2026-05-01$21.70$21.701,408,100
2026-04-30$21.88$21.881,579,600
2026-04-29$20.49$20.491,342,000
2026-04-28$21.27$21.271,320,100
2026-04-27$20.98$20.982,006,900
2026-04-24$22.48$22.482,621,500
2026-04-23$23.26$23.261,965,200
2026-04-22$23.08$23.081,813,000
2026-04-21$23.84$23.842,634,900
2026-04-20$23.18$23.185,987,900
2026-04-17$22.68$22.682,122,200
2026-04-16$22.46$22.462,464,700
2026-04-15$22.15$22.151,501,300
2026-04-14$21.93$21.931,618,700
2026-04-13$22.25$22.252,022,600
2026-04-10$21.53$21.531,436,700
2026-04-09$21.42$21.421,561,500
2026-04-08$21.02$21.021,277,300
2026-04-07$20.58$20.581,353,800
2026-04-06$20.43$20.431,168,300
2026-04-02$20.68$20.681,957,700
2026-04-01$20.60$20.603,219,300
2026-03-31$18.90$18.902,316,300
2026-03-30$17.50$17.501,615,400
2026-03-27$17.88$17.881,743,200
2026-03-26$18.94$18.941,519,500
2026-03-25$18.47$18.472,508,300
2026-03-24$17.79$17.791,330,100
2026-03-23$18.10$18.101,026,700
2026-03-20$18.40$18.402,581,400
2026-03-19$18.66$18.661,444,900
2026-03-18$17.64$17.641,908,000
2026-03-17$18.09$18.091,472,900
2026-03-16$18.32$18.321,350,600
2026-03-13$18.06$18.061,628,800
2026-03-12$17.98$17.981,278,700
2026-03-11$18.63$18.631,271,400
2026-03-10$19.05$19.052,141,300
2026-03-09$18.35$18.351,626,600
2026-03-06$17.66$17.66957,200
2026-03-05$17.55$17.551,985,100
2026-03-04$17.76$17.762,433,200
2026-03-03$17.69$17.692,655,200
2026-03-02$17.18$17.182,617,600
2026-02-27$17.45$17.452,064,800
2026-02-26$17.29$17.291,124,100
2026-02-25$17.62$17.621,162,700
2026-02-24$17.45$17.45705,500
2026-02-23$16.95$16.95854,400
2026-02-20$17.13$17.131,011,100
2026-02-19$17.27$17.271,255,300
2026-02-18$17.38$17.381,082,400
2026-02-17$16.90$16.902,456,900
2026-02-13$15.75$15.751,595,600
2026-02-12$16.23$16.231,284,300
2026-02-11$17.35$17.351,180,600
2026-02-10$17.37$17.37736,500
2026-02-09$17.35$17.35829,600
2026-02-06$16.90$16.901,172,500
2026-02-05$16.25$16.251,715,400
2026-02-04$17.03$17.032,009,700
2026-02-03$17.90$17.901,980,900
2026-02-02$18.23$18.232,056,600
2026-01-30$16.88$16.881,657,300
2026-01-29$17.24$17.241,076,400
2026-01-28$16.84$16.841,920,000
2026-01-27$17.48$17.481,835,200
2026-01-26$16.51$16.511,991,900
2026-01-23$17.40$17.402,765,200
2026-01-22$16.97$16.973,150,800
2026-01-21$17.15$17.152,774,900
2026-01-20$16.78$16.783,680,700
2026-01-16$15.05$15.051,660,200
2026-01-15$15.38$15.381,019,200
2026-01-14$15.02$15.022,061,900
2026-01-13$14.87$14.873,222,700
2026-01-12$13.88$13.882,104,400
2026-01-09$13.84$13.842,058,200
2026-01-08$14.70$14.703,522,100
2026-01-07$14.03$14.031,916,200
2026-01-06$13.51$13.512,409,400
2026-01-05$13.58$13.583,077,700
2026-01-02$13.64$13.641,663,800