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Birchtech Corp. (BCHT) stock

BCHTNYSEMeasuring & Controlling Devices, NECFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 12, 2026Score 6/3036% below fair value
$1.18+0.01 (+0.85%)

Close on Nov 13, 2026Market cap $31.04MP/E –Yield –

Price history

Birchtech share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.

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Close, Nov 13, 2026
$1.18
+0.85% on the day
52-week range
$1.01 – $4.80
-75.4% from the high
Change over 52 weeks
-68.5%
From $3.75 on Nov 13, 2025
Average volume
83,898
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Nov 13, 2026$1.04$1.22$1.04$1.18+0.85%121,557
Nov 12, 2026$1.15$1.21$1.01$1.17+6.36%134,644
Nov 11, 2026$1.18$1.18$1.05$1.100.00%34,603
Nov 10, 2026$1.14$1.18$1.05$1.10-3.51%47,128
Nov 9, 2026$1.15$1.18$1.10$1.14-0.87%85,985
Nov 6, 2026$1.07$1.16$1.06$1.15+11.65%68,499
Nov 5, 2026$1.15$1.15$1.02$1.03-6.36%61,478
Nov 4, 2026$1.07$1.14$1.06$1.10-1.79%10,768
Nov 3, 2026$1.10$1.16$1.10$1.12+3.23%20,835
Nov 2, 2026$1.18$1.26$1.05$1.09-3.98%169,648
Oct 30, 2026$1.22$1.26$1.13$1.13-6.61%11,697
Oct 29, 2026$1.29$1.44$1.19$1.21-3.97%44,394
Oct 28, 2026$1.29$1.31$1.22$1.260.00%5,954
Oct 27, 2026$1.25$1.34$1.25$1.26+1.61%32,556
Oct 26, 2026$1.10$1.26$1.10$1.24+9.73%12,116
Oct 23, 2026$1.11$1.20$1.11$1.13-0.88%102,612
Oct 22, 2026$1.12$1.27$1.12$1.140.00%49,295
Oct 21, 2026$1.15$1.24$1.13$1.14-3.39%83,798
Oct 20, 2026$1.18$1.21$1.18$1.180.00%99,012
Oct 19, 2026$1.15$1.25$1.15$1.180.00%72,383
Oct 16, 2026$1.20$1.25$1.18$1.18-2.48%79,917
Oct 15, 2026$1.34$1.34$1.21$1.21-9.70%172,888
Oct 14, 2026$1.38$1.38$1.30$1.34-4.96%111,138
Oct 13, 2026$1.35$1.42$1.35$1.41+0.71%9,629
Oct 12, 2026$1.41$1.44$1.37$1.40+0.72%92,943
Oct 9, 2026$1.44$1.46$1.38$1.39-3.47%37,104
Oct 8, 2026$1.45$1.45$1.40$1.44-0.69%111,550
Oct 7, 2026$1.49$1.49$1.41$1.45-2.68%65,089
Oct 6, 2026$1.42$1.50$1.42$1.49+2.05%345,819
Oct 5, 2026$1.50$1.55$1.45$1.46-2.67%227,410

Seasonality

BCHT return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average10.2%-0.3%-5.1%0.8%-8.2%0.6%-2.1%7.0%5.8%2.7%17.4%-7.1%
Months up6 of 103 of 102 of 104 of 106 of 104 of 103 of 104 of 105 of 106 of 105 of 101 of 9
2026-4.0%-34.4%-19.5%-15.3%6.8%19.2%-33.7%-11.8%16.7%-19.3%4.4%
202520.5%-20.3%2.1%4.0%0.4%33.2%-12.7%-1.3%21.0%2.9%19.3%-15.7%
2024-20.5%35.6%-0.0%-23.2%6.6%-19.1%25.2%-4.9%-4.1%-6.4%-8.8%-20.2%
202389.3%-16.0%-7.1%20.5%-13.8%-28.4%16.9%-20.4%44.4%5.1%146.3%-9.1%
2022-20.3%-0.2%-8.3%-25.6%-31.3%59.1%-17.1%-1.7%-15.8%20.8%20.5%-24.4%
202126.6%46.9%-1.7%-1.7%8.7%-18.4%-3.9%-22.4%-14.5%33.8%-17.2%-18.1%
20205.3%-10.0%-13.9%0.9%15.1%5.6%-10.5%64.7%25.0%11.7%-16.9%96.9%
20194.2%14.0%-5.3%-7.4%4.0%0.0%46.2%13.2%-11.7%-23.7%-20.7%-17.4%
201812.0%-3.1%-11.5%73.1%-27.8%-30.0%-23.8%51.6%7.2%-23.1%63.5%-26.6%
2017-11.1%-15.8%13.9%-17.4%-50.5%-14.9%-7.5%2.7%-10.6%25.0%-16.5%-29.6%

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