Tantech (TANH) Stock: Why It's Down Today
Updated Oct 19, 2026, 4:00 PM ET · closing price
- Closed at $10.20, -25.11% vs the prior close of $13.62.
- Volume 177.69K shares, 2.1x its 50-day average (heavy).
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
TANH slides 25.1% to $10.20, a 52-week low on 2.1x normal volume. Closed at $10.20, -25.11% vs the prior close of $13.62. Day range $10.00–$14.60, opened at $13.61.
TANH daily analysis — what happened
A plain-English, data-only note for every US trading day (today's note updates every 2 hours while the market is open). Newest first; older days stay archived below.
Oct 19, 2026 — TANH slides 25.1% to $10.20, a 52-week low on 2.1x normal volume
- Closed at $10.20, -25.11% vs the prior close of $13.62. Day range $10.00–$14.60, opened at $13.61.
- Volume was 177.69K shares, 2.1x its 50-day average of 82.83K — unusually heavy trading.
- Price is -40.1% vs its 50-day average ($17.04) and -62.2% vs its 200-day average ($26.97).
- 52-week range $10.00–$88.50; today's close sits at 0% of that range, 88.5% below the 52-week high.
Oct 16, 2026 — TANH jumps 6.1% to $13.62
- Closed at $13.62, +6.07% vs the prior close of $12.84. Day range $11.80–$14.00, opened at $12.94.
- Volume was 34.99K shares, 0.4x its 50-day average of 82.24K — lighter than usual.
- Price is -21.1% vs its 50-day average ($17.26) and -49.9% vs its 200-day average ($27.17).
- 52-week range $10.05–$92.00; today's close sits at 4% of that range, 85.2% below the 52-week high.
Oct 15, 2026 — TANH slides 7.6% to $12.84, a 1-month low, 3 down days in a row
- Closed at $12.84, -7.63% vs the prior close of $13.90. Day range $12.68–$14.51, opened at $14.15.
- Volume was 34.90K shares, 0.4x its 50-day average of 81.66K — lighter than usual.
- Price is -26.2% vs its 50-day average ($17.41) and -53.1% vs its 200-day average ($27.35).
- 52-week range $10.05–$92.00; today's close sits at 3% of that range, 86.0% below the 52-week high.
- That makes 3 straight losses.
Oct 14, 2026 — TANH slides 14.6% to $13.90
- Closed at $13.90, -14.57% vs the prior close of $16.27. Day range $13.33–$16.60, opened at $15.30.
- Volume was 82.30K shares, 1.0x its 50-day average of 80.04K.
- Price is -20.9% vs its 50-day average ($17.57) and -49.5% vs its 200-day average ($27.52).
- 52-week range $10.05–$92.00; today's close sits at 5% of that range, 84.9% below the 52-week high.
Oct 13, 2026 — TANH slides 5.8% to $16.27
- Closed at $16.27, -5.79% vs the prior close of $17.27. Day range $16.27–$18.59, opened at $16.86.
- Volume was 134.60K shares, 1.7x its 50-day average of 77.41K.
- Price is -8.2% vs its 50-day average ($17.72) and -41.3% vs its 200-day average ($27.70).
- 52-week range $10.05–$92.00; today's close sits at 8% of that range, 82.3% below the 52-week high.
Oct 12, 2026 — TANH rises 1.5% to $17.27
- Closed at $17.27, +1.53% vs the prior close of $17.01. Day range $16.10–$17.44, opened at $16.10.
- Volume was 37.10K shares, 0.5x its 50-day average of 76.77K — lighter than usual.
- Price is -3.0% vs its 50-day average ($17.81) and -38.0% vs its 200-day average ($27.87).
- 52-week range $10.05–$92.00; today's close sits at 9% of that range, 81.2% below the 52-week high.
Oct 9, 2026 — TANH dips 2.7% to $17.01
- Closed at $17.01, -2.69% vs the prior close of $17.48. Day range $16.26–$18.07, opened at $16.95.
- Volume was 69.60K shares, 0.9x its 50-day average of 75.42K.
- Price is -4.9% vs its 50-day average ($17.89) and -39.3% vs its 200-day average ($28.03).
- 52-week range $10.05–$95.00; today's close sits at 8% of that range, 82.1% below the 52-week high.
Oct 8, 2026 — TANH jumps 3.4% to $17.48, 3 up days in a row
- Closed at $17.48, +3.43% vs the prior close of $16.90. Day range $15.24–$17.48, opened at $17.25.
- Volume was 45.20K shares, 0.6x its 50-day average of 74.57K.
- Price is -2.7% vs its 50-day average ($17.96) and -38.0% vs its 200-day average ($28.22).
- 52-week range $10.05–$97.95; today's close sits at 8% of that range, 82.2% below the 52-week high.
- That makes 3 straight gains.
Oct 7, 2026 — TANH ends flat (+0.1%) to $16.90
- Closed at $16.90, +0.12% vs the prior close of $16.88. Day range $15.25–$17.98, opened at $16.87.
- Volume was 121.80K shares, 1.7x its 50-day average of 72.23K.
- Price is -6.3% vs its 50-day average ($18.03) and -40.5% vs its 200-day average ($28.40).
- 52-week range $10.05–$97.95; today's close sits at 8% of that range, 82.7% below the 52-week high.
Oct 6, 2026 — TANH jumps 20.4% to $16.88
- Closed at $16.88, +20.40% vs the prior close of $14.02. Day range $14.00–$16.88, opened at $14.40.
- Volume was 68.50K shares, 1.0x its 50-day average of 70.98K.
- Price is -6.8% vs its 50-day average ($18.12) and -40.9% vs its 200-day average ($28.56).
- 52-week range $10.05–$98.00; today's close sits at 8% of that range, 82.8% below the 52-week high.
Oct 5, 2026 — TANH slides 5.2% to $14.02
- Closed at $14.02, -5.21% vs the prior close of $14.79. Day range $13.80–$15.29, opened at $14.23.
- Volume was 51.40K shares, 0.7x its 50-day average of 70.09K.
- Price is -22.9% vs its 50-day average ($18.18) and -51.2% vs its 200-day average ($28.72).
- 52-week range $10.05–$98.00; today's close sits at 5% of that range, 85.7% below the 52-week high.
Oct 2, 2026 — TANH jumps 6.6% to $14.79
- Closed at $14.79, +6.56% vs the prior close of $13.88. Day range $13.88–$14.90, opened at $13.88.
- Volume was 19.80K shares, 0.3x its 50-day average of 69.74K — lighter than usual.
- Price is -19.3% vs its 50-day average ($18.32) and -48.8% vs its 200-day average ($28.89).
- 52-week range $10.05–$98.00; today's close sits at 5% of that range, 84.9% below the 52-week high.
- SEC filings that day: 6-K.
TANH bull case vs bear case (from the data)
- No clear positive signal in the price trend, filings or insider data right now.
- Price is -40.1% vs its 50-day average — short-term trend is down.
- Price is -62.2% vs its 200-day average — below the long-term trend line.
- High volatility: average daily move of 8.5% over 20 sessions.
- Thin trading (under $2M a day on average) can mean wide bid/ask spreads.
TANH latest news & SEC filings
Every SEC filing by or about TANH in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 2, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Sep 24, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Sep 1, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Aug 19, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Aug 6, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Aug 4, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Things to know before you trade TANH
- How much it moves: over the last 20 sessions the average daily move was 8.47% (largest 25.1%). That is a volatile stock.
- Liquidity: about 51.87K shares (≈$529.12K) trade per day on average. Thin volume can mean wider bid/ask spreads.
- 52-week position: $10.20 vs a range of $10.00–$88.50 (0% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: 1:50 on Sep 4, 2026, 1:40 on Feb 13, 2025
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 0 sales.
- Latest filings: 6-K Oct 2, 2026; 6-K Sep 24, 2026; 6-K Sep 1, 2026.
- Listing: Nasdaq · industry: Industrial Organic Chemicals.
TANH market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 19, 2026 | 13.61 | 14.60 | 10.00 | 10.20 | 177.69K |
| Oct 16, 2026 | 13.27 | 14.00 | 11.80 | 13.62 | 35.00K |
| Oct 15, 2026 | 14.15 | 14.51 | 12.68 | 12.84 | 34.90K |
| Oct 14, 2026 | 15.30 | 16.60 | 13.33 | 13.90 | 82.30K |
| Oct 13, 2026 | 16.86 | 18.59 | 16.27 | 16.27 | 134.60K |
| Oct 12, 2026 | 16.10 | 17.44 | 16.10 | 17.27 | 37.10K |
| Oct 9, 2026 | 16.95 | 18.07 | 16.26 | 17.01 | 69.60K |
| Oct 8, 2026 | 17.25 | 17.48 | 15.24 | 17.48 | 45.20K |
| Oct 7, 2026 | 16.87 | 17.98 | 15.25 | 16.90 | 121.80K |
| Oct 6, 2026 | 14.40 | 16.88 | 14.00 | 16.88 | 68.50K |
| Oct 5, 2026 | 14.23 | 15.29 | 13.80 | 14.02 | 51.40K |
| Oct 2, 2026 | 13.88 | 14.90 | 13.88 | 14.79 | 19.80K |
| Oct 1, 2026 | 14.30 | 15.45 | 13.88 | 13.88 | 17.80K |
| Sep 30, 2026 | 14.11 | 15.00 | 13.30 | 15.00 | 8.10K |
| Sep 29, 2026 | 17.98 | 17.98 | 14.09 | 14.62 | 17.10K |
| Sep 28, 2026 | 15.40 | 17.60 | 14.61 | 17.50 | 53.30K |
| Sep 25, 2026 | 14.99 | 14.99 | 13.41 | 14.38 | 5.90K |
| Sep 24, 2026 | 14.63 | 14.63 | 13.78 | 14.50 | 8.00K |
| Sep 23, 2026 | 15.60 | 15.60 | 13.00 | 14.45 | 30.20K |
| Sep 22, 2026 | 12.72 | 16.45 | 12.72 | 15.05 | 19.20K |
About Tantech
Tantech (TANH) is listed on the Nasdaq and classified by the SEC under “Industrial Organic Chemicals”. Its business address is in ZHEJIANG, China. State of incorporation: Virgin Islands, British. Fiscal year ends December 31. SEC CIK 1588084.
TANH board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Mengqi Liao | Director | Mar 31, 2026 |
| Hongdao Qian | Director | Mar 31, 2026 |
| Shudong Wang | Director | Mar 31, 2026 |
| Yefang Zhang | Director | Mar 17, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Zheyuan Liu | CEO | Apr 9, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| No open-market insider buys or sales reported in the last 12 months. | ||||
TANH financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| No annual XBRL figures available (foreign filers often report on Form 20-F). | ||||
Latest balance sheet: total assets $—, total liabilities $—, cash $—.
TANH earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| No 8-K earnings releases in recent filings. | ||
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 19, 2026, 4:00 PM ET. Filings: SEC EDGAR. Refreshed every 2 hours during US market hours.