// company-profile
United Microelectronics Corp
UMCExchangeNYSESectorSemiconductors & Related DevicesInc.F5Filings1Insiders1
// api This United Microelectronics Corp insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $1.7M across 1 transaction.
// 90-day insight
Over the last 90 days, United Microelectronics Corp insiders sold $1.7M across 1 transaction with no open-market purchases.
- Most active insider: HU CHE-JEN with 1 transaction totaling $1.7M.
- Largest single sale: $1.7M by HU CHE-JEN on Jun 30, 2026.
Activity skews bearish — sales outpace buys.
Institutional Ownership
Top 13F-HR holders of United Microelectronics Corp as of 2026-03-31
Total reported AUM
$1.49B
QoQ change
+55.3%
Reporting period
2026-03-31
#1
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
$128.9M
14.4M shares
#2
BlackRock, Inc.
CIK 2012383
$125.1M
13.9M shares
#3
BlackRock, Inc.
CIK 2012383
$114.7M
12.8M shares
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 30, 2026 | HU CHE-JEN | UMC | Sale | 10,000 | $171.30 | $1.71M |
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