$UMC stock has now fallen 9% today, according to our price data from Polygon. There has been approximately $65,882,996 of trading volume.
Here is what we see in our data on $UMC (you can track the company live on Quiver's $UMC stock page):
$UMC Insider Trading Activity
$UMC insiders have traded $UMC stock on the open market 2 times in the past 6 months. Of those trades, 0 have been purchases and 2 have been sales.
Here’s a breakdown of recent trading of $UMC stock by insiders over the last 6 months:
- CHITUNG LIU (CFO & SVP) sold 1,900,000 shares for an estimated $294,291,000
- CHE-JEN HU (Vice President) sold 10,000 shares for an estimated $1,713,000
To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.
$UMC Hedge Fund Activity
We have seen 199 institutional investors add shares of $UMC stock to their portfolio, and 79 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- ACADIAN ASSET MANAGEMENT LLC added 5,826,613 shares (+253.6%) to their portfolio in Q1 2026, for an estimated $52,322,984
- AQR CAPITAL MANAGEMENT LLC added 5,249,718 shares (+55.5%) to their portfolio in Q1 2026, for an estimated $47,142,467
- QUBE RESEARCH & TECHNOLOGIES LTD added 4,838,763 shares (+1839.0%) to their portfolio in Q1 2026, for an estimated $43,452,091
- MARSHALL WACE, LLP removed 4,533,912 shares (-95.7%) from their portfolio in Q1 2026, for an estimated $40,714,529
- TWO SIGMA INVESTMENTS, LP added 3,980,009 shares (+70.1%) to their portfolio in Q1 2026, for an estimated $35,740,480
- SCHRODER INVESTMENT MANAGEMENT GROUP removed 3,811,881 shares (-92.9%) from their portfolio in Q1 2026, for an estimated $34,230,691
- UBS GROUP AG added 3,604,697 shares (+78.9%) to their portfolio in Q1 2026, for an estimated $32,370,179
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.
You can track data on $UMC on Quiver Quantitative.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.
