MRK · Merck & Co., Inc.
$135.84
+0.29 (+0.21%)
At close · Aug 14
Market Cap
$335.14B
Shares
2.47B
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 |
|---|---|---|---|---|
| 2026-07-06 | 8,554,424 | 9,715,247 | 18,269,671 | 42.5% |
| 2026-06-29 | 8,759,615 | 7,179,691 | 15,939,306 | 39.8% |
| 2026-06-22 | 13,540,029 | 13,323,868 | 26,863,897 | 41.7% |
| 2026-06-15 | 12,267,662 | 12,639,105 | 24,906,767 | 37.7% |
| 2026-06-08 | 13,887,148 | 11,140,201 | 25,027,349 | 44.4% |
| 2026-06-01 | 10,711,044 | 13,609,573 | 24,320,617 | 42.0% |
| 2026-05-25 | 8,181,440 | 8,419,533 | 16,600,973 | 38.6% |
| 2026-05-18 | 10,647,866 | 9,699,909 | 20,347,775 | 43.4% |
| 2026-05-11 | 7,707,171 | 10,915,321 | 18,622,492 | 46.2% |
| 2026-05-04 | 7,357,654 | 7,983,779 | 15,341,433 | 42.8% |
| 2026-04-27 | 13,684,142 | 10,768,394 | 24,452,536 | 44.3% |
| 2026-04-20 | 10,475,890 | 7,846,674 | 18,322,564 | 43.5% |
| 2026-04-13 | 10,437,448 | 12,127,178 | 22,564,626 | 41.7% |
| 2026-04-06 | 10,311,571 | 9,638,274 | 19,949,845 | 45.4% |
| 2026-03-30 | 7,337,026 | 6,652,952 | 13,989,978 | 40.5% |
| 2026-03-23 | 8,309,994 | 9,560,142 | 17,870,136 | 43.0% |
| 2026-03-16 | 9,244,552 | 15,798,452 | 25,043,004 | 36.7% |
| 2026-03-09 | 7,812,637 | 8,850,118 | 16,662,755 | 41.4% |
| 2026-03-02 | 10,467,618 | 15,575,991 | 26,043,609 | 47.4% |
| 2026-02-23 | 11,602,062 | 12,189,489 | 23,791,551 | 41.6% |
| 2026-02-16 | 7,422,264 | 6,348,571 | 13,770,835 | 38.2% |
| 2026-02-09 | 14,111,346 | 11,544,588 | 25,655,934 | 41.1% |
| 2026-02-02 | 25,788,125 | 23,102,455 | 48,890,580 | 47.5% |
| 2026-01-26 | 13,515,203 | 11,428,708 | 24,943,911 | 43.1% |
| 2026-01-19 | 12,786,216 | 8,097,049 | 20,883,265 | 43.6% |
| 2026-01-12 | 14,057,151 | 12,921,952 | 26,979,103 | 46.0% |
| 2026-01-05 | 19,045,234 | 16,968,782 | 36,014,016 | 46.2% |
| 2025-12-29 | 6,621,702 | 6,850,173 | 13,471,875 | 41.9% |
| 2025-12-22 | 9,789,129 | 7,084,074 | 16,873,203 | 39.9% |
| 2025-12-15 | 18,263,928 | 25,856,118 | 44,120,046 | 41.7% |
| 2025-12-08 | 15,733,742 | 15,249,808 | 30,983,550 | 43.7% |
| 2025-12-01 | 12,654,994 | 18,096,492 | 30,751,486 | 45.4% |
| 2025-11-24 | 15,973,939 | 13,293,268 | 29,267,207 | 42.2% |
| 2025-11-17 | 20,716,428 | 16,648,724 | 37,365,152 | 40.2% |
| 2025-11-10 | 14,098,474 | 14,618,160 | 28,716,634 | 39.5% |
| 2025-11-03 | 10,544,203 | 11,113,698 | 21,657,901 | 38.7% |
| 2025-10-27 | 11,319,863 | 11,119,561 | 22,439,424 | 40.4% |
| 2025-10-20 | 7,309,945 | 10,550,724 | 17,860,669 | 39.7% |
| 2025-10-13 | 9,056,371 | 9,421,798 | 18,478,169 | 38.6% |
| 2025-10-06 | 8,561,848 | 10,730,426 | 19,292,274 | 36.4% |
| 2025-09-29 | 18,204,249 | 20,891,127 | 39,095,376 | 41.0% |
| 2025-09-22 | 9,018,048 | 18,747,987 | 27,766,035 | 43.3% |
| 2025-09-15 | 9,432,850 | 18,123,925 | 27,556,775 | 39.9% |
| 2025-09-08 | 9,139,152 | 16,773,994 | 25,913,146 | 46.6% |
| 2025-09-01 | 8,946,786 | 16,287,419 | 25,234,205 | 50.3% |
| 2025-08-25 | 10,640,673 | 13,824,201 | 24,464,874 | 41.2% |
| 2025-08-18 | 10,196,013 | 14,724,993 | 24,921,006 | 43.5% |
Showing 1–47 of 47 weeks
Key facts
CIK
310158
CUSIP
58933Y105
13F (30d)
3181 filings
3092 filers
Visit website
Investor relations