MRSH
Marsh & Mclennan Companies, Inc.Company with tickers: MRSH
CIK
62709
CUSIP
571748102
Shares Outstanding
481,794,501
13F Activity (30d)
249 filings
224 filers
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 |
|---|---|---|---|---|
| 2026-05-18 | 3,109,934 | 1,911,055 | 5,020,989 | 48.3% |
| 2026-05-11 | 4,768,933 | 3,427,848 | 8,196,781 | 71.7% |
| 2026-05-04 | 3,998,322 | 2,064,461 | 6,062,783 | 56.1% |
| 2026-04-27 | 3,891,186 | 2,120,973 | 6,012,159 | 52.0% |
| 2026-04-20 | 4,008,028 | 5,071,011 | 9,079,039 | 59.5% |
| 2026-04-13 | 4,661,732 | 2,326,541 | 6,988,273 | 55.7% |
| 2026-04-06 | 2,931,688 | 1,550,170 | 4,481,858 | 40.1% |
| 2026-03-30 | 3,570,853 | 3,670,521 | 7,241,374 | 51.7% |
| 2026-03-23 | 4,668,539 | 2,782,022 | 7,450,561 | 45.2% |
| 2026-03-16 | 3,649,661 | 3,985,306 | 7,634,967 | 38.1% |
| 2026-03-09 | 3,675,426 | 2,165,070 | 5,840,496 | 42.9% |
| 2026-03-02 | 2,758,674 | 1,677,617 | 4,436,291 | 37.9% |
| 2026-02-23 | 4,080,639 | 3,112,510 | 7,193,149 | 43.2% |
| 2026-02-16 | 2,978,625 | 2,042,990 | 5,021,615 | 42.1% |
| 2026-02-09 | 7,166,553 | 3,350,074 | 10,516,627 | 46.9% |
| 2026-02-02 | 4,411,142 | 3,677,546 | 8,088,688 | 50.7% |
| 2026-01-26 | 5,597,311 | 3,117,292 | 8,714,603 | 50.4% |
| 2026-01-19 | 2,957,442 | 2,752,514 | 5,709,956 | 49.4% |
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