Stock listing
BOATS:UMC United Microelectronics Corp. Stock
US listing (BOATS) of United Microelectronics Corp. · home listing TWSE:2303
Follow United Microelectronics Corp. into a list and get an email when it puts out news.
Home listing price · TWSE:2303
$111.50 TWD -4.00 (-3.5%)
Close on Oct 30, 2026 · This listing has no price on 6ix; the price shown is the home listing's, TWSE:2303
- Day range
- $107.00 – $112.50 TWDOct 30, 2026
- Volume
- 233.6M sharesOct 30, 2026
- Market cap
- $1.40T TWDAt the close on Oct 30, 2026 · price × 12.54B shares outstanding
- 52-week range
- $43.80 – $185.50 TWDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $21.72B TWDMedian day 133.8M shares · 1 day with no trades · last 3 months, Jul 30, 2026 – Oct 30, 2026
Prices by listing
| Listing | Last | Change | Volume | Open | High | Low | Previous close | Price from |
|---|---|---|---|---|---|---|---|---|
| TWSE:2303 · Home | $111.50 TWD | -4.00 (-3.5%) | 233,567,367 | $110.00 | $112.50 | $107.00 | $115.50 | Close on Oct 30, 2026 |
| NYSE:UMC | $19.45 USD | +0.56 (+3.0%) | 10,851,300 | $19.20 | $19.49 | $18.89 | $18.89 | Close on Oct 27, 2026 |
| Frankfurt:UMCB | €15.00 EUR | -1.80 (-10.7%) | — | €15.20 | €15.20 | €15.00 | €16.80 | Close on Oct 30, 2026 |
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · TWSE:2303 · TWD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $111.50 | -4.00 | -3.5% | $110.00 | $112.50 | $107.00 | 233,567,367 | |
| $115.50 | -12.50 | -9.8% | $122.00 | $122.00 | $115.50 | 349,560,921 | |
| $128.00 | +5.50 | +4.5% | $127.00 | $128.50 | $124.50 | 88,988,574 | |
| $122.50 | -3.00 | -2.4% | $127.00 | $127.50 | $121.00 | 126,613,595 | |
| $125.50 | 0.00 | 0.0% | $125.50 | $125.50 | $125.50 | 0 | |
| $125.50 | -2.50 | -2.0% | $129.00 | $131.00 | $125.00 | 88,183,899 | |
| $128.00 | +1.00 | +0.8% | $129.50 | $131.00 | $127.00 | 73,759,992 | |
| $127.00 | -4.50 | -3.4% | $129.50 | $131.50 | $126.50 | 98,805,968 | |
| $131.50 | -1.50 | -1.1% | $127.00 | $132.00 | $126.00 | 140,013,556 | |
| $133.00 | -0.50 | -0.4% | $134.00 | $136.00 | $132.50 | 90,187,620 | |
| $133.50 | -8.50 | -6.0% | $136.50 | $137.00 | $132.50 | 209,759,406 | |
| $142.00 | +0.50 | +0.4% | $143.00 | $144.00 | $140.00 | 108,768,026 | |
| $141.50 | -4.00 | -2.7% | $142.50 | $143.50 | $138.50 | 132,666,602 | |
| $145.50 | -2.00 | -1.4% | $146.50 | $149.00 | $144.00 | 95,178,472 | |
| $147.50 | -1.00 | -0.7% | $147.50 | $149.50 | $147.00 | 81,139,424 | |
| $148.50 | +1.00 | +0.7% | $148.50 | $150.00 | $145.50 | 145,796,960 | |
| $147.50 | -5.00 | -3.3% | $149.00 | $150.00 | $146.00 | 304,983,374 | |
| $152.50 | -9.00 | -5.6% | $164.50 | $165.00 | $152.00 | 321,068,929 | |
| $161.50 | 0.00 | 0.0% | $159.00 | $162.50 | $157.50 | 98,989,171 | |
| $161.50 | +7.00 | +4.5% | $156.00 | $161.50 | $155.50 | 112,535,852 | |
| $154.50 | +1.00 | +0.7% | $157.50 | $158.00 | $154.50 | 101,164,759 | |
| $153.50 | -0.50 | -0.3% | $151.50 | $156.00 | $151.50 | 110,638,385 | |
| $154.00 | -6.00 | -3.8% | $157.00 | $157.00 | $152.00 | 153,840,764 | |
| $160.00 | 0.00 | 0.0% | $163.00 | $163.00 | $158.00 | 123,082,426 | |
| $160.00 | +3.00 | +1.9% | $161.00 | $168.50 | $160.00 | 281,790,622 | |
| $157.00 | +1.00 | +0.6% | $156.50 | $159.00 | $153.00 | 156,282,899 | |
| $156.00 | +8.50 | +5.8% | $155.00 | $160.50 | $153.50 | 301,927,693 | |
| $147.50 | +5.50 | +3.9% | $144.50 | $149.50 | $142.50 | 253,382,049 | |
| $142.00 | +3.50 | +2.5% | $139.50 | $142.50 | $138.00 | 115,974,906 | |
| $138.50 | -4.00 | -2.8% | $140.50 | $141.00 | $138.00 | 101,297,360 | |
| $142.50 | +2.00 | +1.4% | $136.50 | $143.50 | $135.00 | 130,952,792 | |
| $140.50 | -2.00 | -1.4% | $139.00 | $141.50 | $137.50 | 119,260,816 | |
| $142.50 | +1.00 | +0.7% | $142.50 | $145.50 | $141.00 | 202,430,216 | |
| $141.50 | +4.50 | +3.3% | $141.00 | $144.50 | $137.00 | 268,302,470 | |
| $137.00 | -6.00 | -4.2% | $142.00 | $142.50 | $135.00 | 215,617,633 | |
| $143.00 | +13.00 | +10.0% | $134.50 | $143.00 | $134.00 | 331,842,880 | |
| $130.00 | +5.00 | +4.0% | $128.50 | $131.00 | $126.50 | 141,122,757 | |
| $125.00 | -1.00 | -0.8% | $127.50 | $129.00 | $123.00 | 138,008,048 | |
| $126.00 | -6.50 | -4.9% | $131.50 | $133.00 | $126.00 | 133,847,466 | |
| $132.50 | +3.50 | +2.7% | $127.50 | $136.50 | $127.00 | 218,488,857 | |
| $129.00 | -1.00 | -0.8% | $126.50 | $129.00 | $124.00 | 215,954,158 | |
| $130.00 | +11.50 | +9.7% | $120.50 | $130.00 | $120.00 | 320,014,819 | |
| $118.50 | -5.00 | -4.0% | $123.50 | $123.50 | $117.00 | 180,555,312 | |
| $123.50 | -1.50 | -1.2% | $124.00 | $124.50 | $122.00 | 82,518,327 | |
| $125.00 | +1.50 | +1.2% | $123.50 | $125.50 | $119.00 | 123,934,291 | |
| $123.50 | +7.00 | +6.0% | $118.00 | $128.00 | $117.50 | 194,179,315 | |
| $116.50 | +1.00 | +0.9% | $115.50 | $117.00 | $114.00 | 57,950,937 | |
| $115.50 | 0.00 | 0.0% | $117.00 | $118.00 | $112.00 | 100,085,807 | |
| $115.50 | -3.50 | -2.9% | $115.00 | $117.00 | $113.50 | 108,146,105 | |
| $119.00 | -2.50 | -2.1% | $122.50 | $124.00 | $117.50 | 89,658,751 | |
| $121.50 | +0.50 | +0.4% | $121.50 | $124.00 | $121.50 | 66,405,850 | |
| $121.00 | -3.50 | -2.8% | $125.00 | $125.50 | $120.00 | 112,997,383 | |
| $124.50 | +1.50 | +1.2% | $125.50 | $130.50 | $123.00 | 199,266,322 | |
| $123.00 | 0.00 | 0.0% | $123.00 | $125.50 | $121.00 | 91,987,306 | |
| $123.00 | 0.00 | 0.0% | $121.50 | $124.50 | $120.00 | 78,968,127 | |
| $123.00 | +7.00 | +6.0% | $117.00 | $123.50 | $117.00 | 173,910,450 | |
| $116.00 | -5.50 | -4.5% | $121.50 | $121.50 | $114.00 | 165,309,350 | |
| $121.50 | -0.50 | -0.4% | $121.50 | $123.50 | $118.00 | 147,342,605 | |
| $122.00 | +3.50 | +3.0% | $129.00 | $129.00 | $121.50 | 273,649,983 | |
| $118.50 | +0.50 | +0.4% | $118.50 | $120.00 | $115.50 | 180,117,150 | |
| $118.00 | -3.00 | -2.5% | $125.50 | $126.00 | $116.00 | 368,409,758 | |
| $121.00 | +11.00 | +10.0% | $121.00 | $121.00 | $121.00 | 44,715,264 | |
| $110.00 | +7.50 | +7.3% | $107.50 | $112.50 | $105.00 | 373,240,964 |
- Ticker
- BOATS:UMC
- Asset type
- Stock
- Sector
- Technology
- Industry
- Semiconductors
- Exchange
- BOATS
- Currency
- USD
What changed lately
Latest news release · Oct 6, 2026
UMC Reports Sales for September 2026
Latest earnings call · Jul 29, 2026
United Microelectronics (TWSE:2303) Q2 2026 Earnings Call
Replay and transcript
Latest deck · Oct 28, 2026
Q3 2026 Earnings Presentation
Earnings · 11 slides
Calls
Replays
United Microelectronics (TWSE:2303) Q2 2026 Earnings Call
Wed, Jul 29, 2026 · 5:00 AM ET
Watch TranscriptUnited Microelectronics (TWSE:2303) Q1 2026 Earnings Call
Wed, Apr 29, 2026 · 5:00 PM ET
Watch TranscriptUnited Microelectronics (TWSE:2303) Q4 2025 Earnings Call
Wed, Jan 28, 2026 · 5:00 PM ET
Watch Transcript
Latest news
UMC Reports Sales for September 2026
Oct 6, 2026
Closed $147.50 (-3.3%) on Oct 6, 2026
UMC Reports Sales for August 2026
Sep 4, 2026
Closed $130.00 (+4.0%) on Sep 4, 2026
UMC Reports Sales for July 2026
Aug 6, 2026
Closed $121.50 (-0.4%) on Aug 6, 2026
UMC Reports Second Quarter 2026 Results
Jul 29, 2026
Closed $110.00 (+7.3%) on Jul 30, 2026
UMC Announces Fab Expansion in Singapore and Construction of New Fab in Tainan to Meet Accelerating AI Demand
Jul 29, 2026
Closed $110.00 (+7.3%) on Jul 30, 2026
SILITH and UMC Achieve Mass Production Milestone for Silicon Photonics
Jul 13, 2026
Closed $151.00 (-1.6%) on Jul 14, 2026
UMC Reports Sales for June 2026
Jul 6, 2026
Closed $166.00 (-2.6%) on Jul 6, 2026
UMC Reports Sales for May 2026
Jun 5, 2026
Closed $131.50 (+5.2%) on Jun 5, 2026
UMC Shareholders Approve NT$2.60 Cash Dividend at Annual Shareholders’ Meeting
May 27, 2026
Closed $143.50 (+10.0%) on May 27, 2026
UMC Announces Release of 14nm eHV FinFET Platform, Advancing Innovation in Next-Generation Smartphone Displays
May 14, 2026
Closed $108.00 (+9.8%) on May 14, 2026
Decks
Q3 2026 Earnings Presentation
Earnings · 11 slides · Oct 28, 2026
Q2 2026 Earnings Presentation
Earnings · 14 slides · Jul 29, 2026
Q1 2026 Earnings Presentation
Earnings · 14 slides · Apr 30, 2026
Q1 2026 Earnings Presentation
Earnings · 14 slides · Apr 29, 2026
United Microelectronics Corp. on 6ix
- Sector
- Technology
- Industry
- Semiconductors
- News releases
- 33 in the last 12 months · 49 in all · newest Oct 6, 2026 · oldest 2025
- Calls
- 25 calls with a replay · 25 with a transcript · latest Jul 29, 2026
- Decks
- 32 decks · latest Oct 28, 2026
Where United Microelectronics Corp. is listed
| Listing | Exchange | Country | Currency |
|---|---|---|---|
| TWSE:2303 聯電 · Home listing | TWSE | Taiwan | TWD |
| NYSE:UMC | NYSE | United States | USD |
| gettex:UMCB | gettex | Germany | EUR |
| BOATS:UMC · This page | BOATS | United States | USD |
| Frankfurt:UMCB | Frankfurt | Germany | EUR |
| Tradegate:UMCB | Tradegate | Germany | EUR |
| LS Exchange:A0M2R4 | LS Exchange | Germany | EUR |
| Dusseldorf:UMCB | Dusseldorf | Germany | EUR |
| Lang & Schwarz:A0M2R4 | Lang & Schwarz | Germany | EUR |
| BMV:UMCN | BMV | Mexico | MXN |
| Munich:UMCB | Munich | Germany | EUR |
| Stuttgart:UMCB | Stuttgart | Germany | EUR |
Log in to ask 6ix AI your own questions about United Microelectronics Corp.