OTC:PTIX | Historical Stock Price | Protagenic Therapeutics, Inc.\new

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
2021-04-27 to 2026-08-27
Data captured

Stock Price Chart

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

$0.16$0.66$2.75$11.44$47.61$198.162021-04-272026-08-27

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

View year

Historical Stock Price — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2023-12-29$13.86$13.86921
2023-12-28$13.71$13.711,400
2023-12-27$12.04$12.04600
2023-12-26$11.76$11.76529
2023-12-22$11.07$11.072,957
2023-12-21$11.37$11.37250
2023-12-20$11.90$11.90514
2023-12-19$12.32$12.32471
2023-12-18$11.20$11.20443
2023-12-15$10.64$10.64786
2023-12-14$12.29$12.29450
2023-12-13$11.76$11.76929
2023-12-12$13.86$13.865,200
2023-12-11$11.98$11.98279
2023-12-08$11.49$11.49457
2023-12-07$12.18$12.18286
2023-12-06$12.18$12.18871
2023-12-05$11.20$11.2079
2023-12-04$11.20$11.20350
2023-12-01$10.71$10.71121
2023-11-30$10.50$10.50471
2023-11-29$10.50$10.501,000
2023-11-28$11.20$11.200
2023-11-27$11.20$11.20214
2023-11-24$11.34$11.3421
2023-11-22$11.34$11.34129
2023-11-21$11.20$11.20179
2023-11-20$11.62$11.6229
2023-11-17$11.90$11.90186
2023-11-16$11.34$11.3486
2023-11-15$11.97$11.97121
2023-11-14$11.97$11.97250
2023-11-13$11.20$11.2021
2023-11-10$11.20$11.201,507
2023-11-09$11.20$11.20179
2023-11-08$11.41$11.41114
2023-11-07$11.34$11.34243
2023-11-06$11.13$11.13414
2023-11-03$11.27$11.271,436
2023-11-02$11.20$11.201,000
2023-11-01$11.20$11.2029
2023-10-31$10.88$10.88207
2023-10-30$11.21$11.2179
2023-10-27$11.06$11.06286
2023-10-26$11.05$11.05107
2023-10-25$10.88$10.881,279
2023-10-24$11.90$11.90271
2023-10-23$11.90$11.90100
2023-10-20$12.60$12.6079
2023-10-19$12.32$12.32621
2023-10-18$12.60$12.60279
2023-10-17$12.04$12.04243
2023-10-16$11.90$11.904,350
2023-10-13$11.75$11.751,064
2023-10-12$10.35$10.353,100
2023-10-11$11.27$11.273,014
2023-10-10$12.35$12.357,993
2023-10-09$16.24$16.24629
2023-10-06$16.24$16.241,293
2023-10-05$15.40$15.402,293
2023-10-04$16.80$16.8017,321
2023-10-03$24.08$24.08543
2023-10-02$25.06$25.061,071
2023-09-29$25.76$25.76329
2023-09-28$25.20$25.20107
2023-09-27$24.78$24.78129
2023-09-26$25.76$25.761,336
2023-09-25$24.64$24.6429
2023-09-22$25.55$25.5579
2023-09-21$25.06$25.06450
2023-09-20$25.61$25.61971
2023-09-19$25.90$25.9079
2023-09-18$25.76$25.76164
2023-09-15$24.36$24.36336
2023-09-14$25.20$25.201,229
2023-09-13$25.62$25.62107
2023-09-12$24.50$24.50714
2023-09-11$25.19$25.191,550
2023-09-08$24.64$24.64964
2023-09-07$26.04$26.041,807
2023-09-06$25.89$25.890
2023-09-05$25.89$25.89164
2023-09-01$25.62$25.62350
2023-08-31$26.60$26.60107
2023-08-30$26.60$26.600
2023-08-29$26.60$26.6050
2023-08-28$26.32$26.3243
2023-08-25$26.32$26.32929
2023-08-24$26.25$26.250
2023-08-23$26.25$26.25114
2023-08-22$26.25$26.2514
2023-08-21$26.25$26.2514
2023-08-18$26.25$26.2514
2023-08-17$26.25$26.2571
2023-08-16$26.14$26.14157
2023-08-15$27.27$27.270
2023-08-14$27.27$27.2736
2023-08-11$26.60$26.6064
2023-08-10$27.30$27.3021
2023-08-09$26.32$26.3250
2023-08-08$26.39$26.391,093
2023-08-07$25.76$25.76157
2023-08-04$25.76$25.761,007
2023-08-03$26.46$26.46993
2023-08-02$29.36$29.36136
2023-08-01$27.72$27.72614
2023-07-31$30.11$30.11114
2023-07-28$30.66$30.661,529
2023-07-27$29.19$29.19186
2023-07-26$28.84$28.8443
2023-07-25$29.68$29.6879
2023-07-24$28.84$28.8471
2023-07-21$28.98$28.9871
2023-07-20$29.40$29.4086
2023-07-19$29.40$29.40129
2023-07-18$29.12$29.1214
2023-07-17$29.12$29.120
2023-07-14$29.12$29.12186
2023-07-13$29.96$29.96114
2023-07-12$29.26$29.2693
2023-07-11$29.26$29.2629
2023-07-10$28.70$28.7021
2023-07-07$28.70$28.7079
2023-07-06$28.55$28.55136
2023-07-05$28.42$28.42114
2023-07-03$28.14$28.1479
2023-06-30$28.42$28.42279
2023-06-29$28.63$28.63707
2023-06-28$27.85$27.8529
2023-06-27$27.72$27.7221
2023-06-26$27.72$27.7264
2023-06-23$27.83$27.83121
2023-06-22$27.90$27.90114
2023-06-21$27.87$27.8750
2023-06-20$27.02$27.0286
2023-06-16$27.86$27.86300
2023-06-15$26.53$26.53421
2023-06-14$26.18$26.18221
2023-06-13$26.59$26.5971
2023-06-12$26.39$26.391,036
2023-06-09$26.75$26.75171
2023-06-08$27.02$27.0257
2023-06-07$26.88$26.8821
2023-06-06$27.44$27.44221
2023-06-05$27.16$27.16157
2023-06-02$27.16$27.16200
2023-06-01$27.86$27.86171
2023-05-31$27.86$27.86136
2023-05-30$28.49$28.49379
2023-05-26$28.56$28.56357
2023-05-25$29.82$29.82779
2023-05-24$30.97$30.97814
2023-05-23$29.40$29.403,414
2023-05-22$29.96$29.96200
2023-05-19$28.00$28.00100
2023-05-18$29.12$29.12136
2023-05-17$27.86$27.86207
2023-05-16$27.58$27.58407
2023-05-15$30.52$30.5221
2023-05-12$30.52$30.5271
2023-05-11$28.81$28.81286
2023-05-10$28.56$28.56321
2023-05-09$29.40$29.40736
2023-05-08$27.30$27.3071
2023-05-05$27.44$27.44214
2023-05-04$26.88$26.88136
2023-05-03$26.04$26.04136
2023-05-02$26.60$26.60121
2023-05-01$26.32$26.32693
2023-04-28$26.18$26.18343
2023-04-27$25.48$25.4893
2023-04-26$25.62$25.6286
2023-04-25$26.18$26.18236
2023-04-24$26.18$26.18107
2023-04-21$25.41$25.41400
2023-04-20$25.90$25.90214
2023-04-19$25.79$25.79357
2023-04-18$25.76$25.76293
2023-04-17$25.76$25.76429
2023-04-14$24.08$24.081,107
2023-04-13$24.47$24.47914
2023-04-12$23.38$23.382,586
2023-04-11$24.78$24.78400
2023-04-10$24.08$24.08936
2023-04-06$26.18$26.18386
2023-04-05$25.62$25.62507
2023-04-04$25.76$25.76286
2023-04-03$25.34$25.342,000
2023-03-31$24.22$24.221,529
2023-03-30$23.80$23.80193
2023-03-29$23.35$23.35250
2023-03-28$23.10$23.101,414
2023-03-27$23.10$23.10907
2023-03-24$27.30$27.307,986
2023-03-23$24.36$24.364,364
2023-03-22$25.20$25.204,730
2023-03-21$20.83$20.831,113
2023-03-20$19.60$19.6027
2023-03-17$19.32$19.3238
2023-03-16$19.49$19.49332
2023-03-15$19.66$19.66123
2023-03-14$20.38$20.38161
2023-03-13$20.72$20.72327
2023-03-10$21.28$21.28334
2023-03-09$22.40$22.40246
2023-03-08$22.96$22.96150
2023-03-07$24.14$24.1418
2023-03-06$25.20$25.2039
2023-03-03$24.08$24.0888
2023-03-02$26.32$26.3277
2023-03-01$24.08$24.0857
2023-02-28$24.08$24.08196
2023-02-27$27.38$27.38577
2023-02-24$27.16$27.1684
2023-02-23$28.28$28.28230
2023-02-22$28.28$28.28541
2023-02-21$30.35$30.3570
2023-02-17$29.46$29.4652
2023-02-16$28.84$28.84202
2023-02-15$28.56$28.56296
2023-02-14$29.96$29.9691
2023-02-13$29.68$29.6829
2023-02-10$29.68$29.6884
2023-02-09$29.68$29.6846
2023-02-08$31.36$31.36895
2023-02-07$31.36$31.36216
2023-02-06$31.58$31.58327
2023-02-03$31.75$31.75255
2023-02-02$31.92$31.92209
2023-02-01$30.52$30.52505
2023-01-31$30.24$30.24229
2023-01-30$31.92$31.92409
2023-01-27$33.04$33.04121
2023-01-26$31.36$31.36123
2023-01-25$31.36$31.3689
2023-01-24$31.36$31.36521
2023-01-23$31.36$31.36316
2023-01-20$32.48$32.48109
2023-01-19$30.91$30.911,977
2023-01-18$32.14$32.14782
2023-01-17$31.92$31.923,329
2023-01-13$24.86$24.86341
2023-01-12$25.20$25.20143
2023-01-11$25.26$25.26313
2023-01-10$23.24$23.24129
2023-01-09$23.91$23.91105
2023-01-06$23.80$23.80368
2023-01-05$25.76$25.76121
2023-01-04$23.69$23.69264
2023-01-03$22.96$22.96127