United Microelectronics Corporation
NYSEUMC short interest
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United Microelectronics Corporation heads into Tuesday's earnings release with the stock down sharply from its recent highs and options traders growing more cautious by the day. The price action tells the most…
UMC has spent the past week unwinding the extremes flagged in our July 9 note — borrow costs have collapsed, short sellers have retreated further, and availability has loosened — yet the options market has not fully…
Snapshot as of 18 Aug 2026
Cost to borrow UMC shares has hit a record high. It jumped from 1.76% to 25.1% in seven days — a 1,329% rise. That is the sharpest move in the stock's history on ORTEX data. The spike is happening even as short sellers…
UMC posts first-quarter results on April 29 after a sharp month-long rally that has left short sellers in retreat and options traders leaning more bullish than at any point this year. The stock climbed 36% over the…
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