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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$2.95$2.9524,140
2021-12-30$2.95$2.9522,560
2021-12-29$3.05$3.0523,160
2021-12-28$2.85$2.8522,500
2021-12-27$2.65$2.6536,700
2021-12-23$2.90$2.9012,360
2021-12-22$2.90$2.9010,420
2021-12-21$2.75$2.7521,740
2021-12-20$2.80$2.8054,400
2021-12-17$3.05$3.0550,400
2021-12-16$3.10$3.1016,040
2021-12-15$3.15$3.1521,360
2021-12-14$3.15$3.1514,800
2021-12-13$3.15$3.157,120
2021-12-10$3.30$3.308,820
2021-12-09$3.10$3.109,780
2021-12-08$3.05$3.0523,940
2021-12-07$3.10$3.1027,080
2021-12-06$2.95$2.9517,160
2021-12-03$3.25$3.2528,660
2021-12-02$3.55$3.5551,720
2021-12-01$3.45$3.456,140
2021-11-30$3.60$3.604,160
2021-11-29$3.60$3.6022,540
2021-11-26$3.85$3.857,940
2021-11-24$3.85$3.8511,760
2021-11-23$3.70$3.7016,420
2021-11-22$3.85$3.8522,280
2021-11-19$3.90$3.9017,060
2021-11-18$3.95$3.9524,660
2021-11-17$4.30$4.3010,380
2021-11-16$4.35$4.3537,720
2021-11-15$4.45$4.4543,260
2021-11-12$4.20$4.2034,020
2021-11-11$4.25$4.2516,360
2021-11-10$4.20$4.2014,200
2021-11-09$4.20$4.208,960
2021-11-08$4.25$4.2513,280
2021-11-05$4.35$4.3517,200
2021-11-04$4.35$4.354,200
2021-11-03$4.40$4.404,920
2021-11-02$4.35$4.359,940
2021-11-01$4.40$4.406,480
2021-10-29$4.35$4.3512,040
2021-10-28$4.45$4.4510,520
2021-10-27$4.35$4.3518,940
2021-10-26$4.35$4.3523,580
2021-10-25$4.50$4.5036,440
2021-10-22$4.35$4.359,600
2021-10-21$4.40$4.4015,120
2021-10-20$4.25$4.2512,460
2021-10-19$4.60$4.60100,960
2021-10-18$4.20$4.2014,400
2021-10-15$4.30$4.308,640
2021-10-14$4.30$4.3013,700
2021-10-13$4.25$4.254,820
2021-10-12$4.30$4.302,800
2021-10-11$4.50$4.507,400
2021-10-08$4.25$4.2531,720
2021-10-07$4.25$4.2535,140
2021-10-06$4.25$4.2539,020
2021-10-05$3.40$3.4025,700
2021-10-04$3.40$3.4025,140
2021-10-01$3.45$3.4517,660
2021-09-30$3.25$3.2520,900
2021-09-29$3.45$3.4511,140
2021-09-28$3.40$3.4028,740
2021-09-27$3.15$3.1517,260
2021-09-24$3.20$3.2032,700
2021-09-23$3.30$3.3010,160
2021-09-22$3.20$3.2010,680
2021-09-21$3.45$3.4545,780
2021-09-20$3.20$3.2026,760
2021-09-17$3.15$3.1526,200
2021-09-16$3.05$3.0526,740
2021-09-15$3.20$3.2037,280
2021-09-14$3.10$3.1066,520
2021-09-13$3.45$3.4542,140
2021-09-10$3.65$3.653,500
2021-09-09$3.50$3.5023,020
2021-09-08$3.60$3.601,880
2021-09-07$3.65$3.6527,360
2021-09-03$3.75$3.7510,600
2021-09-02$3.80$3.8018,020
2021-09-01$3.80$3.8022,740
2021-08-31$3.80$3.8017,480
2021-08-30$3.80$3.8026,260
2021-08-27$4.00$4.004,440
2021-08-26$4.00$4.007,700
2021-08-25$4.15$4.1520,940
2021-08-24$4.05$4.0517,880
2021-08-23$4.05$4.0529,500
2021-08-20$3.75$3.7517,820
2021-08-19$3.90$3.9038,080
2021-08-18$4.05$4.0526,640
2021-08-17$4.00$4.0067,160
2021-08-16$4.60$4.6027,600
2021-08-13$4.40$4.4014,160
2021-08-12$4.45$4.4526,700
2021-08-11$4.70$4.7011,980
2021-08-10$4.80$4.8012,780
2021-08-09$4.35$4.3510,240
2021-08-06$4.25$4.2519,700
2021-08-05$4.30$4.3018,880
2021-08-04$4.40$4.405,340
2021-08-03$4.55$4.5512,100
2021-08-02$4.75$4.755,240
2021-07-30$4.90$4.9015,300
2021-07-29$4.90$4.9034,500
2021-07-28$4.60$4.605,240
2021-07-27$4.65$4.6511,820
2021-07-26$4.85$4.858,240
2021-07-23$4.95$4.9525,680
2021-07-22$4.80$4.806,380
2021-07-21$4.75$4.7524,660
2021-07-20$4.80$4.809,320
2021-07-19$4.75$4.7513,120
2021-07-16$4.90$4.9021,640
2021-07-15$4.85$4.859,320
2021-07-14$4.80$4.803,600
2021-07-13$4.90$4.904,880
2021-07-12$5.10$5.106,000
2021-07-09$5.10$5.1031,600
2021-07-08$5.05$5.053,120
2021-07-07$5.00$5.009,960
2021-07-06$5.20$5.2013,320
2021-07-02$5.30$5.306,940
2021-07-01$5.15$5.1511,620
2021-06-30$5.10$5.1015,920
2021-06-29$5.10$5.105,380
2021-06-28$5.20$5.2010,380
2021-06-25$5.20$5.2021,080
2021-06-24$5.35$5.3512,560
2021-06-23$5.35$5.3513,980
2021-06-22$5.35$5.3512,940
2021-06-21$5.45$5.458,980
2021-06-18$5.30$5.3014,280
2021-06-17$5.50$5.5016,040
2021-06-16$5.65$5.6525,960
2021-06-15$5.70$5.7087,020
2021-06-14$6.05$6.0560,440
2021-06-11$6.30$6.3092,160
2021-06-10$6.15$6.1580,980
2021-06-09$6.50$6.50102,200
2021-06-08$6.25$6.2577,260
2021-06-07$6.25$6.2531,780
2021-06-04$6.00$6.0019,620
2021-06-03$6.25$6.254,660
2021-06-02$6.25$6.2528,000
2021-06-01$6.25$6.2578,380
2021-05-28$6.25$6.2530,460
2021-05-27$6.40$6.4036,280
2021-05-26$6.30$6.3040,260
2021-05-25$6.35$6.35139,820
2021-05-24$6.45$6.45148,800
2021-05-21$5.70$5.70110,300
2021-05-20$4.45$4.4518,340
2021-05-19$4.40$4.4020,660
2021-05-18$4.55$4.5540,660
2021-05-17$4.95$4.9524,520
2021-05-14$5.00$5.0019,720
2021-05-13$4.55$4.5526,100
2021-05-12$5.00$5.0023,280
2021-05-11$4.85$4.8597,520
2021-05-10$5.15$5.1511,880
2021-05-07$5.30$5.3013,140
2021-05-06$5.25$5.258,840
2021-05-05$5.45$5.4517,260
2021-05-04$5.50$5.5047,900
2021-05-03$5.70$5.7012,960
2021-04-30$5.75$5.7557,420
2021-04-29$5.50$5.5022,520
2021-04-28$5.25$5.255,500
2021-04-27$5.30$5.3011,120
2021-04-26$5.70$5.7026,680
2021-04-23$5.00$5.0035,460
2021-04-22$5.55$5.5516,420
2021-04-21$5.00$5.0048,520
2021-04-20$4.55$4.5579,760
2021-04-19$5.05$5.0552,560
2021-04-16$5.40$5.4026,520
2021-04-15$5.35$5.3520,620
2021-04-14$5.15$5.159,880
2021-04-13$5.50$5.5032,120
2021-04-12$5.70$5.7022,700
2021-04-09$5.80$5.8015,560
2021-04-08$5.70$5.7033,860
2021-04-07$5.75$5.7526,900
2021-04-06$5.90$5.9032,340
2021-04-05$5.95$5.9541,460
2021-04-01$6.05$6.0534,560
2021-03-31$5.85$5.8553,900
2021-03-30$5.85$5.8551,180
2021-03-29$5.90$5.9025,660
2021-03-26$6.25$6.2536,220
2021-03-25$6.15$6.1586,800
2021-03-24$6.25$6.2532,100
2021-03-23$6.55$6.5582,200
2021-03-22$6.15$6.1568,740
2021-03-19$5.75$5.7577,360
2021-03-18$5.70$5.7025,880
2021-03-17$5.75$5.7525,300
2021-03-16$5.90$5.9029,540
2021-03-15$5.80$5.8016,320
2021-03-12$5.60$5.6019,300
2021-03-11$6.10$6.1025,220
2021-03-10$5.60$5.6017,620
2021-03-09$5.45$5.4543,580
2021-03-08$5.25$5.2525,960
2021-03-05$5.25$5.25116,600
2021-03-04$5.45$5.4589,140
2021-03-03$6.00$6.0041,220
2021-03-02$6.35$6.3558,320
2021-03-01$6.15$6.1533,300
2021-02-26$5.95$5.9549,900
2021-02-25$5.65$5.6548,660
2021-02-24$6.00$6.0080,120
2021-02-23$6.00$6.00112,740
2021-02-22$6.25$6.25140,920
2021-02-19$5.25$5.25111,160
2021-02-18$5.20$5.20108,360
2021-02-17$5.90$5.9062,360
2021-02-16$5.95$5.95103,400
2021-02-12$6.20$6.2092,240
2021-02-11$6.00$6.00188,400
2021-02-10$6.90$6.90127,560
2021-02-09$7.20$7.20172,060
2021-02-08$7.75$7.75284,060
2021-02-05$7.25$7.25349,440
2021-02-04$7.50$7.50351,400
2021-02-03$8.15$8.15328,280
2021-02-02$7.50$7.50275,560
2021-02-01$5.90$5.90285,120
2021-01-29$4.05$4.0542,880
2021-01-28$3.85$3.8525,760
2021-01-27$4.05$4.0520,120
2021-01-26$4.40$4.4014,080
2021-01-25$4.50$4.5028,020
2021-01-22$4.15$4.1529,080
2021-01-21$4.45$4.4530,100
2021-01-20$4.25$4.2590,820
2021-01-19$3.95$3.9582,660
2021-01-15$3.60$3.6036,760
2021-01-14$3.45$3.4512,940
2021-01-13$3.55$3.5522,160
2021-01-12$3.50$3.5026,960
2021-01-11$3.45$3.4519,140
2021-01-08$3.25$3.2531,280
2021-01-07$3.35$3.358,840
2021-01-06$3.45$3.457,640
2021-01-05$3.35$3.3528,900
2021-01-04$3.10$3.1013,600