IBB · iShares Biotechnology ETF
$198.26
-0.68 (-0.34%)
At close · Aug 14
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 | 1,576,212 | 1,842,281 | 3,418,493 | 32.3% |
| 2026-06-29 | 1,246,861 | 1,451,451 | 2,698,312 | 36.1% |
| 2026-06-22 | 2,078,446 | 2,141,040 | 4,219,486 | 40.9% |
| 2026-06-15 | 883,500 | 668,814 | 1,552,314 | 37.4% |
| 2026-06-08 | 1,511,807 | 613,261 | 2,125,068 | 27.0% |
| 2026-06-01 | 1,606,509 | 629,508 | 2,236,017 | 30.6% |
| 2026-05-25 | 874,760 | 1,213,301 | 2,088,061 | 46.5% |
| 2026-05-18 | 2,156,876 | 993,283 | 3,150,159 | 33.8% |
| 2026-05-11 | 1,930,114 | 447,522 | 2,377,636 | 34.4% |
| 2026-05-04 | 1,884,371 | 891,202 | 2,775,573 | 40.9% |
| 2026-04-27 | 1,900,111 | 913,131 | 2,813,242 | 42.2% |
| 2026-04-20 | 1,724,525 | 1,241,676 | 2,966,201 | 41.1% |
| 2026-04-13 | 1,992,677 | 1,002,452 | 2,995,129 | 44.4% |
| 2026-04-06 | 1,515,496 | 594,984 | 2,110,480 | 37.4% |
| 2026-03-30 | 1,399,461 | 1,002,008 | 2,401,469 | 32.2% |
| 2026-03-23 | 1,981,521 | 998,872 | 2,980,393 | 35.3% |
| 2026-03-16 | 1,343,121 | 2,460,282 | 3,803,403 | 45.5% |
| 2026-03-09 | 1,743,242 | 1,300,542 | 3,043,784 | 33.6% |
| 2026-03-02 | 2,070,864 | 1,158,990 | 3,229,854 | 32.8% |
| 2026-02-23 | 1,313,769 | 2,590,739 | 3,904,508 | 46.6% |
| 2026-02-16 | 1,357,860 | 957,995 | 2,315,855 | 36.9% |
| 2026-02-09 | 2,164,486 | 1,029,990 | 3,194,476 | 35.0% |
| 2026-02-02 | 1,485,260 | 3,476,603 | 4,961,863 | 36.6% |
| 2026-01-26 | 1,362,296 | 1,134,417 | 2,496,713 | 37.4% |
| 2026-01-19 | 1,764,600 | 1,211,649 | 2,976,249 | 35.5% |
| 2026-01-12 | 1,613,704 | 1,637,760 | 3,251,464 | 39.5% |
| 2026-01-05 | 2,720,893 | 2,254,232 | 4,975,125 | 39.8% |
| 2025-12-29 | 1,506,695 | 2,229,017 | 3,735,712 | 55.8% |
| 2025-12-22 | 1,145,036 | 855,426 | 2,000,462 | 42.0% |
| 2025-12-15 | 1,633,630 | 1,343,692 | 2,977,322 | 40.7% |
| 2025-12-08 | 1,577,258 | 1,041,531 | 2,618,789 | 34.5% |
| 2025-12-01 | 1,791,865 | 1,695,024 | 3,486,889 | 36.9% |
| 2025-11-24 | 1,538,723 | 2,659,386 | 4,198,109 | 52.3% |
| 2025-11-17 | 3,047,367 | 6,093,993 | 9,141,360 | 53.1% |
| 2025-11-10 | 3,031,373 | 3,608,258 | 6,639,631 | 42.9% |
| 2025-11-03 | 2,660,061 | 1,734,214 | 4,394,275 | 42.8% |
| 2025-10-27 | 2,355,232 | 1,967,501 | 4,322,733 | 41.8% |
| 2025-10-20 | 1,974,028 | 2,262,720 | 4,236,748 | 48.5% |
| 2025-10-13 | 2,043,535 | 1,558,347 | 3,601,882 | 35.6% |
| 2025-10-06 | 1,798,137 | 1,462,644 | 3,260,781 | 31.3% |
| 2025-09-29 | 2,728,510 | 1,680,598 | 4,409,108 | 30.2% |
| 2025-09-22 | 1,476,257 | 1,443,208 | 2,919,465 | 28.8% |
| 2025-09-15 | 1,217,437 | 2,171,952 | 3,389,389 | 37.9% |
| 2025-09-08 | 1,796,334 | 552,150 | 2,348,484 | 25.1% |
| 2025-09-01 | 1,554,480 | 1,219,437 | 2,773,917 | 32.7% |
| 2025-08-25 | 1,751,306 | 1,144,655 | 2,895,961 | 44.5% |
| 2025-08-18 | 1,435,664 | 638,581 | 2,074,245 | 34.5% |
Showing 1–47 of 47 weeks
Key facts
CIK
918509
CUSIP
464287556
13F (30d)
307 filings
304 filers