UMC · United Microelectronics Corp
$18.34
+0.34 (+1.89%)
At close · Aug 21
Market Cap
$46.00B
Shares
2.51B
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-07-13 | 11,570,529 | 17,356,590 | 28,927,119 | 31.4% |
| 2026-07-06 | 8,099,424 | 18,258,354 | 26,357,778 | 35.8% |
| 2026-06-29 | 8,084,726 | 10,909,211 | 18,993,937 | 28.3% |
| 2026-06-22 | 16,068,334 | 16,019,088 | 32,087,422 | 27.5% |
| 2026-06-15 | 6,944,520 | 7,915,138 | 14,859,658 | 20.4% |
| 2026-06-08 | 11,700,752 | 11,258,496 | 22,959,248 | 23.5% |
| 2026-06-01 | 12,969,247 | 14,578,681 | 27,547,928 | 29.7% |
| 2026-05-25 | 13,953,687 | 14,632,753 | 28,586,440 | 33.7% |
| 2026-05-18 | 11,579,534 | 14,590,681 | 26,170,215 | 34.4% |
| 2026-05-11 | 12,011,550 | 14,005,130 | 26,016,680 | 33.1% |
| 2026-05-04 | 15,408,438 | 17,978,635 | 33,387,073 | 35.7% |
| 2026-04-27 | 15,803,706 | 10,869,604 | 26,673,310 | 35.9% |
| 2026-04-20 | 11,887,453 | 11,842,387 | 23,729,840 | 35.2% |
| 2026-04-13 | 11,309,238 | 4,663,988 | 15,973,226 | 30.7% |
| 2026-04-06 | 8,994,629 | 4,716,612 | 13,711,241 | 28.0% |
| 2026-03-30 | 6,929,139 | 2,967,483 | 9,896,622 | 25.9% |
| 2026-03-23 | 7,099,524 | 6,755,865 | 13,855,389 | 34.6% |
| 2026-03-16 | 6,175,765 | 6,770,277 | 12,946,042 | 36.4% |
| 2026-03-09 | 7,978,528 | 7,245,864 | 15,224,392 | 34.8% |
| 2026-03-02 | 6,799,890 | 2,995,815 | 9,795,705 | 23.3% |
| 2026-02-23 | 6,537,130 | 3,037,871 | 9,575,001 | 28.8% |
| 2026-02-16 | 5,029,939 | 4,430,181 | 9,460,120 | 37.1% |
| 2026-02-09 | 7,791,071 | 5,073,034 | 12,864,105 | 30.7% |
| 2026-02-02 | 11,196,479 | 9,939,876 | 21,136,355 | 33.1% |
| 2026-01-26 | 24,393,468 | 13,459,163 | 37,852,631 | 36.3% |
| 2026-01-19 | 13,779,866 | 9,549,779 | 23,329,645 | 35.8% |
| 2026-01-12 | 11,207,375 | 13,184,231 | 24,391,606 | 48.9% |
| 2026-01-05 | 14,605,633 | 8,128,982 | 22,734,615 | 32.2% |
| 2025-12-29 | 3,889,884 | 3,164,561 | 7,054,445 | 31.9% |
| 2025-12-22 | 3,262,709 | 5,771,764 | 9,034,473 | 46.5% |
| 2025-12-15 | 9,372,379 | 8,031,810 | 17,404,189 | 36.1% |
| 2025-12-08 | 9,764,293 | 9,403,232 | 19,167,525 | 38.1% |
| 2025-12-01 | 9,116,431 | 8,411,153 | 17,527,584 | 38.5% |
| 2025-11-24 | 5,975,317 | 4,759,862 | 10,735,179 | 36.6% |
| 2025-11-17 | 9,291,476 | 7,204,645 | 16,496,121 | 36.5% |
| 2025-11-10 | 7,336,227 | 6,052,657 | 13,388,884 | 37.1% |
| 2025-11-03 | 8,281,268 | 9,829,480 | 18,110,748 | 38.3% |
| 2025-10-27 | 10,023,947 | 7,348,880 | 17,372,827 | 36.9% |
| 2025-10-20 | 5,199,568 | 7,940,178 | 13,139,746 | 39.4% |
| 2025-10-13 | 6,881,130 | 5,456,985 | 12,338,115 | 33.4% |
| 2025-10-06 | 6,580,437 | 4,565,202 | 11,145,639 | 27.7% |
| 2025-09-29 | 11,552,531 | 6,816,766 | 18,369,297 | 41.1% |
| 2025-09-22 | 8,211,123 | 10,367,078 | 18,578,201 | 45.3% |
| 2025-09-15 | 3,791,252 | 3,766,678 | 7,557,930 | 28.2% |
| 2025-09-08 | 3,089,363 | 2,366,697 | 5,456,060 | 32.8% |
| 2025-09-01 | 3,859,621 | 2,960,390 | 6,820,011 | 35.1% |
| 2025-08-25 | 4,208,100 | 2,312,845 | 6,520,945 | 28.2% |
Showing 1–47 of 47 weeks
Key facts
CIK
1033767
CUSIP
910873405
13F (30d)
320 filings
294 filers
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