SPRO · Spero Therapeutics, Inc. · Off Exchange
Market Cap
$71.63M
Shares
58.23M
Volume · Oct 5
942.72K
Avg daily vol (3M)
1.19M
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 |
|---|---|---|---|---|
| 2026-08-31 | 127,634 | 675,782 | 803,416 | 55.0% |
| 2026-08-24 | 209,202 | 868,996 | 1,078,198 | 53.4% |
| 2026-08-17 | 356,685 | 687,298 | 1,043,983 | 48.0% |
| 2026-08-10 | 729,931 | 879,044 | 1,608,975 | 45.6% |
| 2026-08-03 | 639,331 | 1,817,106 | 2,456,437 | 59.4% |
| 2026-07-27 | 822,607 | 1,963,583 | 2,786,190 | 52.4% |
| 2026-07-20 | 1,388,053 | 8,535,565 | 9,923,618 | 46.4% |
| 2026-07-13 | 1,261,222 | 8,011,892 | 9,273,114 | 53.6% |
| 2026-07-06 | 238,218 | 987,238 | 1,225,456 | 50.9% |
| 2026-06-29 | 228,148 | 739,180 | 967,328 | 48.9% |
| 2026-06-22 | 660,431 | 2,908,856 | 3,569,287 | 50.0% |
| 2026-06-15 | 1,825,950 | 9,097,776 | 10,923,726 | 52.7% |
| 2026-06-08 | 445,947 | 1,758,146 | 2,204,093 | 51.0% |
| 2026-06-01 | 444,061 | 1,561,846 | 2,005,907 | 52.6% |
| 2026-05-25 | 655,303 | 1,805,750 | 2,461,053 | 45.4% |
| 2026-05-18 | 296,744 | 852,044 | 1,148,788 | 45.2% |
| 2026-05-11 | 533,134 | 1,361,579 | 1,894,713 | 47.3% |
| 2026-05-04 | 489,189 | 652,621 | 1,141,810 | 45.5% |
| 2026-04-27 | 255,118 | 1,000,154 | 1,255,272 | 56.3% |
| 2026-04-20 | 270,619 | 594,635 | 865,254 | 53.2% |
| 2026-04-13 | 310,414 | 1,249,362 | 1,559,776 | 54.8% |
| 2026-04-06 | 485,115 | 1,003,082 | 1,488,197 | 52.5% |
| 2026-03-30 | 120,890 | 584,255 | 705,145 | 49.8% |
| 2026-03-23 | 178,807 | 715,360 | 894,167 | 51.3% |
| 2026-03-16 | 130,517 | 629,461 | 759,978 | 54.6% |
| 2026-03-09 | 229,602 | 991,001 | 1,220,603 | 58.6% |
| 2026-03-02 | 148,454 | 422,023 | 570,477 | 53.8% |
| 2026-02-23 | 225,192 | 868,097 | 1,093,289 | 53.4% |
| 2026-02-16 | 78,453 | 418,596 | 497,049 | 56.4% |
| 2026-02-09 | 80,095 | 363,347 | 443,442 | 49.2% |
| 2026-02-02 | 456,823 | 1,485,011 | 1,941,834 | 56.6% |
| 2026-01-26 | 103,095 | 486,675 | 589,770 | 48.8% |
| 2026-01-19 | 79,859 | 432,070 | 511,929 | 57.6% |
| 2026-01-12 | 93,033 | 468,221 | 561,254 | 54.0% |
| 2026-01-05 | 109,538 | 639,962 | 749,500 | 55.7% |
| 2025-12-29 | 55,725 | 431,747 | 487,472 | 59.1% |
| 2025-12-22 | 90,627 | 366,311 | 456,938 | 52.2% |
| 2025-12-15 | 182,336 | 534,475 | 716,811 | 48.6% |
| 2025-12-08 | 174,344 | 540,229 | 714,573 | 48.2% |
| 2025-12-01 | 155,820 | 616,990 | 772,810 | 47.1% |
| 2025-11-24 | 108,878 | 695,840 | 804,718 | 57.0% |
| 2025-11-17 | 261,921 | 612,071 | 873,992 | 42.0% |
| 2025-11-10 | 346,770 | 1,190,760 | 1,537,530 | 50.5% |
| 2025-11-03 | 252,431 | 1,202,804 | 1,455,235 | 50.7% |
| 2025-10-27 | 175,069 | 962,540 | 1,137,609 | 53.1% |
| 2025-10-20 | 371,328 | 6,022,824 | 6,394,152 | 41.5% |
| 2025-10-13 | 187,692 | 1,190,827 | 1,378,519 | 51.0% |
| 2025-10-06 | 339,682 | 1,524,700 | 1,864,382 | 55.8% |
Showing 1–48 of 48 weeks