IBB short interest
iShares Biotechnology ETF · Unclassified (ETFs, funds, other) · settlement date 2026-09-30
| Shares short | 11,555,499 |
|---|---|
| Change vs prior report | -711,671 (-5.8%) |
| Change over six months | -13.1% |
| Days to cover | 8.00 (sector: 0.98) |
| Average daily volume | 1,444,217 |
| Rank in Unclassified (ETFs, funds, other) | not ranked (OTC, fund or thinly traded) |
IBB short interest, last 12 months
| Settlement | Shares short | Change | Days to cover | Avg daily volume |
|---|---|---|---|---|
| 2026-09-30 | 11,555,499 | -5.8% | 8.00 | 1,444,217 |
| 2026-09-15 | 12,267,170 | +11.7% | 7.85 | 1,562,083 |
| 2026-08-31 | 10,985,379 | +5.2% | 6.63 | 1,656,851 |
| 2026-08-14 | 10,440,435 | +4.0% | 7.36 | 1,419,090 |
| 2026-07-31 | 10,042,470 | -15.7% | 7.06 | 1,421,450 |
| 2026-07-15 | 11,909,708 | -1.6% | 6.42 | 1,856,519 |
| 2026-06-30 | 12,108,341 | -2.6% | 7.08 | 1,709,338 |
| 2026-06-15 | 12,435,411 | -6.1% | 8.73 | 1,424,408 |
| 2026-05-29 | 13,243,596 | +1.8% | 8.78 | 1,509,007 |
| 2026-05-15 | 13,009,363 | -1.9% | 9.67 | 1,345,941 |
| 2026-04-30 | 13,267,269 | +5.4% | 9.08 | 1,461,917 |
| 2026-04-15 | 12,584,040 | -5.4% | 9.39 | 1,339,544 |
| 2026-03-31 | 13,298,650 | -7.1% | 7.84 | 1,696,619 |
| 2026-03-13 | 14,315,391 | -3.9% | 7.65 | 1,871,221 |
| 2026-02-27 | 14,892,958 | -1.1% | 9.32 | 1,598,310 |
| 2026-02-13 | 15,059,984 | +18.4% | 6.94 | 2,168,820 |
| 2026-01-30 | 12,721,468 | +0.2% | 7.48 | 1,701,427 |
| 2026-01-15 | 12,700,561 | +0.8% | 6.17 | 2,058,089 |
| 2025-12-31 | 12,595,742 | -5.8% | 8.52 | 1,479,225 |
| 2025-12-15 | 13,378,601 | +9.5% | 8.09 | 1,654,204 |
| 2025-11-28 | 12,218,668 | -1.2% | 4.09 | 2,988,274 |
| 2025-11-14 | 12,364,326 | +4.8% | 4.81 | 2,573,030 |
| 2025-10-31 | 11,794,089 | +0.8% | 6.03 | 1,955,263 |
| 2025-10-15 | 11,702,478 | -6.8% | 5.00 | 2,341,998 |
| 2025-09-30 | 12,552,874 | +15.9% | 6.00 | 2,091,681 |
import finzdata as yf
yf.Ticker("IBB").short_interest # every report since 2017
yf.Client().short_interest(["IBB"], start="2018-01-01")Unclassified (ETFs, funds, other) short interest · IBB price history · Who owns IBB · All short interest