UMC · United Microelectronics Corp

$19.79 +0.72 (+3.78%) At close · Aug 28

Market Cap

$49.63B

2.51B

Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.

1M 3M 6M 1Y 5Y All

Short Volume

Date	Short Volume	Short Exempt	Total Volume	Short %
2026-08-28	3,183,852	3,736	4,472,076	71.2%
2026-08-27	1,267,759	108	2,241,772	56.6%
2026-08-26	1,311,122	1,882	1,911,576	68.6%
2026-08-25	1,638,627	340	2,531,983	64.7%
2026-08-24	2,397,625	5,548	3,619,499	66.2%
2026-08-21	908,014	1	1,714,565	53.0%
2026-08-20	1,303,859	753	2,219,562	58.7%
2026-08-19	2,396,080	4,400	2,905,975	82.5%
2026-08-18	1,827,086	5,501	2,977,015	61.4%
2026-08-17	1,155,490	247	1,798,949	64.2%
2026-08-14	589,952	99	1,591,722	37.1%
2026-08-13	921,003	0	1,641,920	56.1%
2026-08-12	1,419,021	13,987	2,654,068	53.5%
2026-08-11	1,007,666	62	2,109,093	47.8%
2026-08-10	778,368	283	1,985,610	39.2%
2026-08-07	2,131,541	110	3,687,933	57.8%
2026-08-06	1,539,058	1,430	2,752,962	55.9%
2026-08-05	2,300,639	2,115	3,414,680	67.4%
2026-08-04	3,238,117	142	4,380,299	73.9%
2026-08-03	1,966,269	1,750	3,071,534	64.0%
2026-07-31	2,483,298	5,617	3,619,739	68.6%
2026-07-30	3,548,289	1,315	5,698,881	62.3%
2026-07-29	3,814,443	32,721	7,246,648	52.6%
2026-07-28	3,017,642	35,884	7,684,512	39.3%
2026-07-27	1,736,284	6,788	3,170,877	54.8%
2026-07-24	1,905,872	12,615	3,477,311	54.8%
2026-07-23	832,567	476	1,660,738	50.1%
2026-07-22	1,081,135	1,854	1,952,277	55.4%
2026-07-21	2,580,953	1,096	4,037,872	63.9%
2026-07-20	1,711,171	285	3,328,013	51.4%
2026-07-17	1,756,948	31,718	3,952,432	44.5%
2026-07-16	2,724,129	25,356	5,235,834	52.0%
2026-07-15	1,955,135	802	3,165,834	61.8%
2026-07-14	1,327,381	338	2,670,988	49.7%
2026-07-13	1,923,707	954	3,413,097	56.4%
2026-07-10	717,067	83	1,457,237	49.2%
2026-07-09	1,615,708	221	2,602,514	62.1%
2026-07-08	1,502,113	2,739	2,712,924	55.4%
2026-07-07	1,514,053	151	4,120,777	36.7%
2026-07-06	844,747	857	2,382,847	35.5%
2026-07-02	1,935,313	30,943	4,271,772	45.3%
2026-07-01	1,328,945	1,169	2,748,016	48.4%
2026-06-30	1,418,286	1,799	2,992,468	47.4%
2026-06-29	1,536,870	32,432	3,081,943	49.9%
2026-06-26	1,957,274	39,521	4,208,532	46.5%
2026-06-25	2,401,202	12,967	5,310,928	45.2%
2026-06-24	4,327,735	277	7,013,622	61.7%
2026-06-23	2,971,352	1,329	4,939,250	60.2%
2026-06-22	4,502,868	2,069	6,612,563	68.1%
2026-06-18	2,520,353	382	3,702,958	68.1%

Showing 1–50 of 64 days

Key facts CIK 1033767 CUSIP 910873405 13F (30d) 282 filings 265 filers Visit website Investor relations