NYSE:BCHT | Historical Stock Price | Birchtech Corp.

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
2012-04-10 to 2026-09-04
Data captured

Stock Price Chart

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

$0.66$1.26$2.37$4.49$8.47$16.012012-04-102026-08-27

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

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$3.75$3.7565,400
2025-12-30$4.00$4.0078,380
2025-12-29$4.05$4.0578,080
2025-12-26$3.75$3.7591,940
2025-12-24$4.00$4.00101,200
2025-12-23$3.85$3.85117,020
2025-12-22$4.05$4.05229,140
2025-12-19$4.15$4.15367,340
2025-12-18$3.50$3.50103,380
2025-12-17$3.30$3.30386,380
2025-12-16$4.45$4.4521,880
2025-12-15$4.40$4.4030,100
2025-12-12$4.45$4.4519,680
2025-12-11$4.55$4.5511,260
2025-12-10$4.65$4.6522,740
2025-12-09$4.75$4.7567,660
2025-12-08$4.55$4.5565,800
2025-12-05$4.40$4.4025,160
2025-12-04$4.30$4.3027,760
2025-12-03$4.40$4.409,440
2025-12-02$4.35$4.3510,840
2025-12-01$4.40$4.4018,220
2025-11-28$4.45$4.45520
2025-11-26$4.35$4.356,020
2025-11-25$4.35$4.3518,100
2025-11-24$4.45$4.4572,000
2025-11-21$4.25$4.2538,500
2025-11-20$3.90$3.9024,760
2025-11-19$3.80$3.8010,580
2025-11-18$3.90$3.9018,880
2025-11-17$4.00$4.0035,300
2025-11-14$3.85$3.8521,740
2025-11-13$3.75$3.758,240
2025-11-12$3.65$3.655,500
2025-11-11$3.45$3.458,000
2025-11-10$3.50$3.5042,600
2025-11-07$3.50$3.5013,640
2025-11-06$3.50$3.5032,700
2025-11-05$3.65$3.6513,340
2025-11-04$3.70$3.7035,660
2025-11-03$3.85$3.8520,260
2025-10-31$3.75$3.7545,800
2025-10-30$3.70$3.7020,720
2025-10-29$3.80$3.8082,980
2025-10-28$3.35$3.357,320
2025-10-27$3.40$3.4018,740
2025-10-24$3.45$3.454,980
2025-10-23$3.45$3.458,740
2025-10-22$3.45$3.4530,220
2025-10-21$3.50$3.505,620
2025-10-20$3.40$3.406,960
2025-10-17$3.35$3.3523,980
2025-10-16$3.40$3.4023,240
2025-10-15$3.50$3.5020,940
2025-10-14$3.50$3.5053,640
2025-10-13$3.35$3.3510,420
2025-10-10$3.35$3.3515,040
2025-10-09$3.40$3.4022,640
2025-10-08$3.40$3.4039,740
2025-10-07$3.50$3.502,140
2025-10-06$3.50$3.506,840
2025-10-03$3.45$3.4523,040
2025-10-02$3.45$3.453,480
2025-10-01$3.50$3.5011,040
2025-09-30$3.65$3.658,400
2025-09-29$3.70$3.7023,620
2025-09-26$3.70$3.7037,500
2025-09-25$3.50$3.5042,380
2025-09-24$3.60$3.6053,600
2025-09-23$3.55$3.5532,500
2025-09-22$3.55$3.5525,360
2025-09-19$3.60$3.6033,720
2025-09-18$3.40$3.4015,420
2025-09-17$3.30$3.3010,900
2025-09-16$3.30$3.3012,760
2025-09-15$3.35$3.3526,100
2025-09-12$3.50$3.5011,820
2025-09-11$3.50$3.5012,440
2025-09-10$3.60$3.6017,080
2025-09-09$3.55$3.5512,160
2025-09-08$3.60$3.6036,720
2025-09-05$3.55$3.5512,660
2025-09-04$3.65$3.6528,600
2025-09-03$3.65$3.6560,220
2025-09-02$3.15$3.1543,120
2025-08-29$3.00$3.0072,420
2025-08-28$2.75$2.758,020
2025-08-27$2.75$2.7511,260
2025-08-26$2.85$2.857,460
2025-08-25$2.80$2.8024,200
2025-08-22$2.85$2.851,640
2025-08-21$2.85$2.852,400
2025-08-20$2.75$2.7515,420
2025-08-19$2.85$2.8546,720
2025-08-18$2.85$2.8526,640
2025-08-15$3.00$3.0042,320
2025-08-14$3.15$3.155,320
2025-08-13$3.15$3.1523,400
2025-08-12$3.10$3.1030,500
2025-08-11$2.95$2.9512,780
2025-08-08$2.90$2.9010,540
2025-08-07$2.95$2.951,540
2025-08-06$2.90$2.9011,400
2025-08-05$2.95$2.958,020
2025-08-04$2.95$2.9510,680
2025-08-01$3.00$3.0013,520
2025-07-31$3.05$3.05260
2025-07-30$3.05$3.0510,000
2025-07-29$3.10$3.101,380
2025-07-28$3.20$3.206,720
2025-07-25$3.25$3.2519,860
2025-07-24$3.10$3.1049,920
2025-07-23$3.20$3.201,260
2025-07-22$3.15$3.1535,660
2025-07-21$3.10$3.1012,900
2025-07-18$3.20$3.205,060
2025-07-17$3.05$3.053,580
2025-07-16$3.00$3.0039,220
2025-07-15$3.25$3.2510,020
2025-07-14$3.35$3.3529,440
2025-07-11$3.20$3.208,440
2025-07-10$3.25$3.251,660
2025-07-09$3.25$3.258,560
2025-07-08$3.25$3.2524,980
2025-07-07$3.25$3.2560,040
2025-07-03$3.60$3.608,940
2025-07-02$3.40$3.4041,900
2025-07-01$3.50$3.505,880
2025-06-30$3.40$3.4019,920
2025-06-27$3.45$3.4532,240
2025-06-26$3.50$3.505,100
2025-06-25$3.45$3.458,920
2025-06-24$3.45$3.4545,660
2025-06-23$3.35$3.35119,200
2025-06-20$3.25$3.25259,040
2025-06-18$2.70$2.708,580
2025-06-17$2.70$2.706,580
2025-06-16$2.75$2.756,220
2025-06-13$2.65$2.65440
2025-06-12$2.65$2.659,580
2025-06-11$2.65$2.6590,500
2025-06-10$2.50$2.5014,840
2025-06-09$2.50$2.5037,700
2025-06-06$2.55$2.5517,840
2025-06-05$2.55$2.556,000
2025-06-04$2.55$2.552,660
2025-06-03$2.60$2.603,460
2025-06-02$2.60$2.601,460
2025-05-30$2.60$2.60520
2025-05-29$2.65$2.656,000
2025-05-28$2.60$2.605,200
2025-05-27$2.60$2.602,680
2025-05-23$2.60$2.607,000
2025-05-22$2.55$2.5528,940
2025-05-21$2.50$2.502,900
2025-05-20$2.55$2.554,880
2025-05-19$2.50$2.5022,560
2025-05-16$2.60$2.6022,000
2025-05-15$2.65$2.656,440
2025-05-14$2.70$2.7020,700
2025-05-13$2.70$2.7015,880
2025-05-12$2.55$2.5532,740
2025-05-09$2.60$2.605,580
2025-05-08$2.60$2.604,760
2025-05-07$2.65$2.650
2025-05-06$2.65$2.654,340
2025-05-05$2.70$2.7018,220
2025-05-02$2.75$2.758,960
2025-05-01$2.65$2.653,800
2025-04-30$2.60$2.604,560
2025-04-29$2.70$2.708,660
2025-04-28$2.70$2.706,500
2025-04-25$2.70$2.70660
2025-04-24$2.70$2.7011,800
2025-04-23$2.45$2.4526,940
2025-04-22$2.45$2.4520,520
2025-04-21$2.30$2.304,680
2025-04-17$2.30$2.3010,880
2025-04-16$2.25$2.251,700
2025-04-15$2.25$2.252,120
2025-04-14$2.30$2.302,400
2025-04-11$2.25$2.258,000
2025-04-10$2.25$2.2589,600
2025-04-09$2.25$2.2516,040
2025-04-08$2.25$2.2522,480
2025-04-07$2.15$2.1520,960
2025-04-04$2.35$2.3538,440
2025-04-03$2.40$2.4013,560
2025-04-02$2.50$2.5017,220
2025-04-01$2.45$2.457,060
2025-03-31$2.50$2.501,600
2025-03-28$2.50$2.5011,340
2025-03-27$2.65$2.659,260
2025-03-26$2.65$2.654,320
2025-03-25$2.65$2.652,360
2025-03-24$2.55$2.551,560
2025-03-21$2.50$2.5011,680
2025-03-20$2.60$2.6030,140
2025-03-19$2.50$2.5045,500
2025-03-18$2.40$2.4045,160
2025-03-17$2.45$2.453,660
2025-03-14$2.50$2.5032,680
2025-03-13$2.30$2.3029,540
2025-03-12$2.40$2.4022,020
2025-03-11$2.45$2.4538,000
2025-03-10$2.35$2.356,360
2025-03-07$2.35$2.356,020
2025-03-06$2.35$2.353,680
2025-03-05$2.30$2.303,580
2025-03-04$2.35$2.3539,700
2025-03-03$2.20$2.2069,560
2025-02-28$2.45$2.454,820
2025-02-27$2.45$2.4535,540
2025-02-26$2.50$2.507,720
2025-02-25$2.50$2.5013,500
2025-02-24$2.50$2.5011,520
2025-02-21$2.50$2.5043,100
2025-02-20$2.55$2.5551,300
2025-02-19$2.50$2.5043,600
2025-02-18$2.55$2.5528,320
2025-02-14$2.60$2.60800
2025-02-13$2.60$2.601,220
2025-02-12$2.55$2.5526,980
2025-02-11$2.65$2.6522,020
2025-02-10$2.90$2.9011,380
2025-02-07$2.95$2.9515,780
2025-02-06$3.00$3.001,300
2025-02-05$3.05$3.0513,760
2025-02-04$2.95$2.953,440
2025-02-03$2.90$2.9027,100
2025-01-31$3.05$3.0517,920
2025-01-30$3.00$3.0032,380
2025-01-29$3.00$3.004,260
2025-01-28$2.80$2.803,680
2025-01-27$2.85$2.8516,740
2025-01-24$2.70$2.706,000
2025-01-23$2.80$2.804,720
2025-01-22$2.75$2.7534,640
2025-01-21$2.65$2.6517,660
2025-01-17$2.75$2.7528,120
2025-01-16$2.55$2.55840
2025-01-15$2.45$2.455,100
2025-01-14$2.55$2.554,920
2025-01-13$2.60$2.606,920
2025-01-10$2.70$2.7011,320
2025-01-08$2.75$2.755,580
2025-01-07$2.75$2.7515,000
2025-01-06$2.75$2.7514,500
2025-01-03$3.00$3.0022,760
2025-01-02$2.65$2.657,880