United Microelectronics (UMC) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
- Closed at $19.82, -5.26% vs the prior close of $20.92.
- Volume 12.91M shares, 1.1x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
UMC slides 5.3% to $19.82, a 1-month low, 5 down days in a row. Closed at $19.82, -5.26% vs the prior close of $20.92. Day range $19.74–$20.58, opened at $20.65.
UMC daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — UMC slides 5.3% to $19.82, a 1-month low, 5 down days in a row
- Closed at $19.82, -5.26% vs the prior close of $20.92. Day range $19.74–$20.58, opened at $20.65.
- Volume was 12.91M shares, 1.1x its 50-day average of 11.24M.
- Price is -8.3% vs its 50-day average ($21.61) and +19.9% vs its 200-day average ($16.53).
- 52-week range $6.97–$28.96; today's close sits at 58% of that range, 31.6% below the 52-week high.
- That makes 5 straight losses.
Oct 15, 2026 — UMC dips 2.2% to $20.92, a 1-month low, 4 down days in a row
- Closed at $20.92, -2.24% vs the prior close of $21.40. Day range $20.25–$20.97, opened at $20.48.
- Volume was 14.47M shares, 1.3x its 50-day average of 11.25M.
- Price is -3.2% vs its 50-day average ($21.60) and +27.0% vs its 200-day average ($16.47).
- 52-week range $6.97–$28.96; today's close sits at 63% of that range, 27.8% below the 52-week high.
- That makes 4 straight losses.
Oct 14, 2026 — UMC slides 4.4% to $21.40, a 1-month low, 3 down days in a row
- Closed at $21.40, -4.42% vs the prior close of $22.39. Day range $21.34–$22.05, opened at $21.85.
- Volume was 12.80M shares, 1.1x its 50-day average of 11.40M.
- Price is -0.8% vs its 50-day average ($21.57) and +30.5% vs its 200-day average ($16.40).
- 52-week range $6.97–$28.96; today's close sits at 66% of that range, 26.1% below the 52-week high.
- That makes 3 straight losses.
Oct 13, 2026 — UMC dips 0.7% to $22.39
- Closed at $22.39, -0.71% vs the prior close of $22.55. Day range $21.80–$22.40, opened at $21.95.
- Volume was 8.71M shares, 0.8x its 50-day average of 11.46M.
- Price is +3.9% vs its 50-day average ($21.55) and +37.1% vs its 200-day average ($16.34).
- 52-week range $6.97–$28.96; today's close sits at 70% of that range, 22.7% below the 52-week high.
- SEC filings that day: 6-K.
Oct 12, 2026 — UMC dips 1.8% to $22.55
- Closed at $22.55, -1.79% vs the prior close of $22.96. Day range $22.31–$22.74, opened at $22.74.
- Volume was 7.05M shares, 0.6x its 50-day average of 11.66M.
- Price is +5.0% vs its 50-day average ($21.48) and +38.7% vs its 200-day average ($16.26).
- 52-week range $6.97–$28.96; today's close sits at 71% of that range, 22.1% below the 52-week high.
Oct 9, 2026 — UMC rises 0.6% to $22.96
- Closed at $22.96, +0.61% vs the prior close of $22.82. Day range $22.84–$23.28, opened at $23.19.
- Volume was 5.24M shares, 0.4x its 50-day average of 12.05M — lighter than usual.
- Price is +7.2% vs its 50-day average ($21.41) and +41.8% vs its 200-day average ($16.19).
- 52-week range $6.97–$28.96; today's close sits at 73% of that range, 20.7% below the 52-week high.
Oct 8, 2026 — UMC dips 2.1% to $22.82
- Closed at $22.82, -2.10% vs the prior close of $23.31. Day range $22.51–$23.32, opened at $23.14.
- Volume was 11.90M shares, 1.0x its 50-day average of 12.30M.
- Price is +7.0% vs its 50-day average ($21.33) and +41.6% vs its 200-day average ($16.12).
- 52-week range $6.97–$28.96; today's close sits at 72% of that range, 21.2% below the 52-week high.
Oct 7, 2026 — UMC rises 0.5% to $23.31
- Closed at $23.31, +0.52% vs the prior close of $23.19. Day range $22.85–$23.34, opened at $22.91.
- Volume was 8.05M shares, 0.6x its 50-day average of 12.67M.
- Price is +9.9% vs its 50-day average ($21.22) and +45.3% vs its 200-day average ($16.04).
- 52-week range $6.97–$28.96; today's close sits at 74% of that range, 19.5% below the 52-week high.
Oct 6, 2026 — UMC slides 3.1% to $23.19
- Closed at $23.19, -3.05% vs the prior close of $23.92. Day range $23.05–$23.67, opened at $23.54.
- Volume was 15.05M shares, 1.2x its 50-day average of 12.68M.
- Price is +9.9% vs its 50-day average ($21.10) and +45.2% vs its 200-day average ($15.97).
- 52-week range $6.97–$28.96; today's close sits at 74% of that range, 19.9% below the 52-week high.
- SEC filings that day: 6-K.
Oct 5, 2026 — UMC slides 8.9% to $23.92 on 2.6x normal volume
- Closed at $23.92, -8.95% vs the prior close of $26.27. Day range $23.26–$24.15, opened at $23.82.
- Volume was 31.82M shares, 2.6x its 50-day average of 12.37M — unusually heavy trading.
- Price is +13.8% vs its 50-day average ($21.01) and +50.5% vs its 200-day average ($15.89).
- 52-week range $6.97–$28.96; today's close sits at 77% of that range, 17.4% below the 52-week high.
- SEC filings that day: 6-K.
Oct 2, 2026 — UMC jumps 4.2% to $26.27, a 3-month high
- Closed at $26.27, +4.20% vs the prior close of $25.21. Day range $25.52–$26.37, opened at $25.67.
- Volume was 10.20M shares, 0.8x its 50-day average of 12.35M.
- Price is +25.5% vs its 50-day average ($20.93) and +66.2% vs its 200-day average ($15.81).
- 52-week range $6.97–$28.96; today's close sits at 88% of that range, 9.3% below the 52-week high.
UMC latest news & SEC filings
Every SEC filing by or about UMC in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 13, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Oct 6, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Oct 5, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Sep 29, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Sep 22, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Lin Jen-Tsung sold 10,000 shares at $163.00 (≈$1.63M) on Sep 22, 2026; now holds 1,172,140
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 18, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Sep 17, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Liu Chitung sold 1,200,000 shares at $142.33 (≈$170.80M) on Sep 16, 2026; now holds 3,039,757
- Liu Chitung sold 400,000 shares at $145.00 (≈$58.00M) on Sep 17, 2026; now holds 2,639,757
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 8, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Sep 4, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Sep 2, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Aug 26, 2026 · Form 6-K — Report from a foreign company (6-K)
Report from a foreign company (6-K) — news it published at home
Aug 14, 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 5, 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 UMC
- How much it moves: over the last 20 sessions the average daily move was 2.77% (largest 8.9%).
- Liquidity: about 10.73M shares (≈$212.69M) trade per day on average.
- 52-week position: $19.82 vs a range of $6.97–$28.96 (58% of the range).
- Dividends: last ex-dividend date Jul 8, 2026 ($0.412/share); 1 payments in the past 12 months.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 20 sales; latest: Jen-Tsung Lin sold 10,000 shares on Sep 22, 2026.
- Latest filings: 6-K Oct 13, 2026; 6-K Oct 6, 2026; 6-K Oct 5, 2026.
- Listing: NYSE · industry: Semiconductors & Related Devices.
UMC market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 20.65 | 20.58 | 19.74 | 19.82 | 12.91M |
| Oct 15, 2026 | 20.48 | 20.97 | 20.25 | 20.92 | 14.48M |
| Oct 14, 2026 | 21.85 | 22.05 | 21.34 | 21.40 | 12.80M |
| Oct 13, 2026 | 21.95 | 22.40 | 21.80 | 22.39 | 8.71M |
| Oct 12, 2026 | 22.74 | 22.74 | 22.31 | 22.55 | 7.05M |
| Oct 9, 2026 | 23.19 | 23.28 | 22.84 | 22.96 | 5.24M |
| Oct 8, 2026 | 23.14 | 23.32 | 22.51 | 22.82 | 11.90M |
| Oct 7, 2026 | 22.91 | 23.34 | 22.85 | 23.31 | 8.05M |
| Oct 6, 2026 | 23.54 | 23.67 | 23.05 | 23.19 | 15.05M |
| Oct 5, 2026 | 23.82 | 24.15 | 23.26 | 23.92 | 31.82M |
| Oct 2, 2026 | 25.67 | 26.37 | 25.52 | 26.27 | 10.20M |
| Oct 1, 2026 | 24.85 | 25.34 | 24.67 | 25.21 | 7.74M |
| Sep 30, 2026 | 24.45 | 24.69 | 24.35 | 24.49 | 7.09M |
| Sep 29, 2026 | 24.43 | 25.02 | 24.11 | 24.72 | 10.91M |
| Sep 28, 2026 | 24.08 | 24.21 | 23.42 | 23.85 | 7.09M |
| Sep 25, 2026 | 24.25 | 24.54 | 24.12 | 24.31 | 6.33M |
| Sep 24, 2026 | 24.11 | 24.35 | 23.80 | 24.10 | 6.67M |
| Sep 23, 2026 | 25.28 | 25.38 | 24.41 | 24.68 | 10.89M |
| Sep 22, 2026 | 25.26 | 25.80 | 25.13 | 25.77 | 8.42M |
| Sep 21, 2026 | 24.93 | 25.63 | 24.64 | 25.43 | 11.26M |
About United Microelectronics
United Microelectronics (UMC) is listed on the NYSE and classified by the SEC under “Semiconductors & Related Devices”. Its business address is in TAIPEI, Taiwan. State of incorporation: Taiwan. Fiscal year ends December 31. SEC CIK 1033767.
UMC 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 |
|---|---|---|
| Lih-Juann Chen | Director | Mar 18, 2026 |
| Ming-Chih Hsu | President & COO | Mar 18, 2026 |
| Wen Hsin Hsu | Director | Mar 18, 2026 |
| Chia-Tsung Hung | Chairman & CSO | Mar 18, 2026 |
| Kuang-Si Shiu | Director | Mar 18, 2026 |
| Jyuo-Min Shyu | Director | Mar 18, 2026 |
| Jason Shi Wang | Chief Executive Officer | Mar 18, 2026 |
| Su-Lin Wang | Director | Mar 18, 2026 |
| Ling-Ling Wu | Director | Mar 18, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Oliver Chang | SVP | May 7, 2026 |
| Jin-Shuang Chen | CHRO & VP | May 7, 2026 |
| Ming-Tsung Chen | Vice President | May 7, 2026 |
| Tzyy-Ming Cheng | Vice President | May 7, 2026 |
| Yu-Chih Chuang | Vice President | May 7, 2026 |
| Shih-Chieh Hsu | Vice President | May 7, 2026 |
| Shu-Fen Hsu | Vice President | May 7, 2026 |
| Che-Jen Hu | Vice President | Jun 30, 2026 |
| Kuei-Chun Hung | SVP | May 7, 2026 |
| Ming-Chih Hsu | President & COO | Mar 18, 2026 |
| Chia-Tsung Hung | Chairman & CSO | Mar 18, 2026 |
| Lin-Wu Kuo | Vice President | May 7, 2026 |
| Ching Yu Liao | General Counsel & VP | May 7, 2026 |
| Jen-Tsung Lin | Vice President | Sep 22, 2026 |
| Ming-Yu Lin | Vice President | May 7, 2026 |
| Shih-Wei Liu | Vice President | May 7, 2026 |
| Chia-Ao Lu | Vice President | May 7, 2026 |
| Chitung Liu | CFO & SVP | Sep 17, 2026 |
| Ying-Sheng Shen | Vice President | May 7, 2026 |
| Wen Yi Tan | Vice President | May 7, 2026 |
| Shih-Fang Tzou | Vice President | May 7, 2026 |
| Chung-Hsien Wu | CISO & SVP | May 7, 2026 |
| Jason Shi Wang | Chief Executive Officer | Mar 18, 2026 |
| Hung-Yu Yen | CHRO & VP | Sep 18, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 22, 2026 | Jen-Tsung Lin | Sale | 10,000 | $163.00 |
| Sep 22, 2026 | Jen-Tsung Lin | Sale | 10,000 | $163.00 |
| Sep 22, 2026 | Jen-Tsung Lin | Sale | 10,000 | $163.00 |
| Sep 22, 2026 | Jen-Tsung Lin | Sale | 10,000 | $163.00 |
| Sep 17, 2026 | Chitung Liu | Sale | 400,000 | $145.00 |
| Sep 17, 2026 | Chitung Liu | Sale | 400,000 | $145.00 |
| Sep 17, 2026 | Chitung Liu | Sale | 400,000 | $145.00 |
| Sep 17, 2026 | Chitung Liu | Sale | 400,000 | $145.00 |
| Sep 16, 2026 | Chitung Liu | Sale | 1,200,000 | $142.33 |
| Sep 16, 2026 | Chitung Liu | Sale | 1,200,000 | $142.33 |
| Sep 16, 2026 | Chitung Liu | Sale | 1,200,000 | $142.33 |
| Sep 16, 2026 | Chitung Liu | Sale | 1,200,000 | $142.33 |
| Jul 13, 2026 | Chitung Liu | Sale | 1,900,000 | $154.89 |
| Jul 13, 2026 | Chitung Liu | Sale | 1,900,000 | $154.89 |
| Jul 13, 2026 | Chitung Liu | Sale | 1,900,000 | $154.89 |
UMC 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 $—.
UMC 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 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.