Equity · Technology
UMC
NYSEUnited Microelectronics (UMC)
The line runs 19.38 USD on 13 August through 15.03 USD on 10 November, on a scale from 10 to 30. Days the market did not trade hold the previous close, flat.
- 52-week range
- 7 USD – 29 USD
- Avg volume
- 999.2K
- Mentions, 30 days
- 1
as of Nov 10, 2026
Have United Microelectronics (UMC) insiders bought or sold shares recently?
In the 90 days to 11 Nov 2026, United Microelectronics insiders reported 3 open-market sales and no purchases (SEC Form 4); the filings we hold, back to 30 Jun 2026, show no open-market purchase.
Form 4, 90 days to 11 Nov 2026, newest reported trade 22 Sep 2026
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 22 Sep 2026 | LIN JEN-TSUNGVice President | Sell | 10,000 | 1.6M USD |
| 17 Sep 2026 | Liu ChitungCFO & SVP | Sell | 400,000 | 58.0M USD |
| 16 Sep 2026 | Liu ChitungCFO & SVP | Sell | 1,200,000 | 170.8M USD |
| Sold | 3 open-market sales | 1,610,000 | $230.43M |
1 other filing in the window: a grant, exercise, tax withholding or transfer, not a trade
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 07 Sep 2026 | Liu ChitungCFO & SVP | Other | 2,000,000 |
Which funds hold United Microelectronics (UMC)?
9 of the 45 institutional funds we track reported a United Microelectronics position for the quarter ended 30 Jun 2026 — a combined 476.2M USD; the latest of those filings landed 02 Sep 2026.
| Fund | Position | Shares | Value | Shares q/q |
|---|---|---|---|---|
| AQR Capital Management | Trimmed | 7,718,125 | 210.0M USD | −47.5% |
| Man Group | Held (±25%) | 5,593,427 | 152.2M USD | −2.4% |
| Two Sigma Investments | Trimmed | 3,088,852 | 84.0M USD | −68.0% |
| Millennium Management | Trimmed | 505,576 | 13.8M USD | −71.4% |
| Citadel Advisors | Trimmed | 210,158 | 5.7M USD | −72.5% |
| D. E. Shaw & Co. | Trimmed | 196,314 | 5.3M USD | −89.6% |
| Marshall Wace | Trimmed | 139,510 | 3.8M USD | −32.1% |
| Maverick Capital | New position | 28,759 | 783K USD | |
| Tudor Investment Corp | Held (±25%) | 21,902 | 596K USD | +24.7% |
| Bridgewater Associates | Exited |
What has been filed or recorded for United Microelectronics (UMC)?
The filings we hold for United Microelectronics, newest first: 6 fails-to-deliver days, the latest dated 14 Oct 2026.
| And | ||||
|---|---|---|---|---|
| 14 Oct 2026 | Fails to deliver | Shares failed to deliver | 100 shares | 2K USD notional · <0.001% of shares out |
| 13 Oct 2026 | Fails to deliver | Shares failed to deliver | 17,110 shares | 386K USD notional · <0.001% of shares out |
| 08 Oct 2026 | Fails to deliver | Shares failed to deliver | 109,077 shares | 2.5M USD notional · 0.001% of shares out |
| 07 Oct 2026 | Fails to deliver | Shares failed to deliver | 703,606 shares | 16.3M USD notional · 0.006% of shares out |
| 30 Sep 2026 | Fails to deliver | Shares failed to deliver | 2,744 shares | 68K USD notional · <0.001% of shares out |
| 29 Sep 2026 | Fails to deliver | Shares failed to deliver | 608 shares | 15K USD notional · <0.001% of shares out |
What is Reddit saying about United Microelectronics (UMC)?
Reddit mentioned UMC 1 times in the 30 days to 11 November 2026, in 1 of the communities we track. All of them were scored for sentiment: 100% read bullish, 0% bearish and 0% neither. Reddit data updated 11 November 2026.
30-day window, Method
How do Reddit mentions of United Microelectronics (UMC) compare with its price?
Share ↗
Which subreddits are talking about United Microelectronics (UMC)?
30 days
| Community | Share | Mentions | Net sentiment |
|---|---|---|---|
| r/stocks | 100% | 1 | +0.08 |
What do people ask about United Microelectronics (UMC)?
What did United Microelectronics shares close at?15.03
United Microelectronics closed at 15.03 USD on 10 Nov 2026, up 0.94% on the close before. That is the end-of-day price from Finazon, not a live quote.
Have United Microelectronics insiders bought or sold shares recently?3 sales
In the 90 days to 11 Nov 2026, United Microelectronics insiders reported 3 open-market sales and no purchases (SEC Form 4); the filings we hold, back to 30 Jun 2026, show no open-market purchase. A further 1 filing was a grant, award, gift or exercise rather than an open-market trade. See Insiders
Which funds own United Microelectronics?9 of 45
9 of the 45 funds we track reported a United Microelectronics position for the quarter ended 30 Jun 2026, per their SEC Form 13F filings. The largest reported positions were AQR Capital Management, Man Group and Two Sigma Investments. See Funds
What is Reddit saying about United Microelectronics?0 mentions
United Microelectronics was mentioned 0 times in the last 7 days across the finance subreddits we track, and 1 times over the trailing 30 days. Of the 1 mentions scored for sentiment, 100% read bullish and 0% bearish. That is a social signal, not investment advice. See Reddit
Answers are generated from the live figures on this page — Reddit crowd data, SEC filings and open company records — and update as the data does.
References
- Finazonprior-day close, indicative (IEX-derived, not the official close), some closes dollar-rounded at the source
- TradingViewthe price chart widget, drawn by TradingView from their own data
- RedditReddit ingest across the tracked finance subreddits
- SEC EDGARForm 4 filings (insider transactions)
- SEC EDGAR13F filings
- SECSEC fails-to-deliver (CNS) data