The RBB Fund, Inc. F/m Ultrash (ZMUN) short interest data
The RBB Fund, Inc. F/m Ultrash · Unclassified (ETFs, funds, other) · settlement date 2026-10-15
| Shares short | 1,457 |
|---|---|
| Change vs prior report | 783 (+116.2%) |
| Change over six months | -93.7% |
| Days to cover | 1.00 (sector: 1.07) |
| Average daily volume | 4,315 |
| Rank in Unclassified (ETFs, funds, other) | not ranked (OTC, fund or thinly traded) |
ZMUN short interest, last 12 months
| Settlement | Shares short | Change | Days to cover | Avg daily volume |
|---|---|---|---|---|
| 2026-10-15 | 1,457 | +116.2% | 1.00 | 4,315 |
| 2026-09-30 | 674 | -90.0% | 1.00 | 5,583 |
| 2026-09-15 | 6,725 | +13.1% | 2.40 | 2,806 |
| 2026-08-31 | 5,946 | -26.5% | 1.00 | 8,633 |
| 2026-08-14 | 8,091 | -8.8% | 1.89 | 4,276 |
| 2026-07-31 | 8,870 | -82.3% | 2.00 | 4,437 |
| 2026-07-15 | 50,138 | +67.6% | 7.42 | 6,759 |
| 2026-06-30 | 29,910 | -7.1% | 4.00 | 7,486 |
| 2026-06-15 | 32,189 | -12.7% | 4.06 | 7,920 |
| 2026-05-29 | 36,872 | +68.6% | 3.57 | 10,330 |
| 2026-05-15 | 21,873 | -11.2% | 2.35 | 9,314 |
| 2026-04-30 | 24,626 | +7.1% | 8.70 | 2,829 |
| 2026-04-15 | 22,997 | +138.3% | 6.28 | 3,664 |
| 2026-03-31 | 9,652 | -0.5% | 1.58 | 6,119 |
| 2026-03-13 | 9,704 | +151.1% | 3.07 | 3,160 |
| 2026-02-27 | 3,864 | -1.8% | 1.10 | 3,525 |
| 2026-02-13 | 3,934 | +759.0% | 4.71 | 836 |
| 2026-01-30 | 458 | +377.1% | 1.00 | 3,323 |
| 2026-01-15 | 96 | -66.5% | 1.00 | 185 |
| 2025-12-31 | 287 | +229.9% | 1.00 | 1,148 |
| 2025-12-15 | 87 | +0.0% | 1.00 | 2,747 |
| 2025-11-28 | 87 | +0.0% | 1.00 | 695 |
| 2025-11-14 | 87 | -97.0% | 1.00 | 949 |
| 2025-10-31 | 2,895 | -4.7% | 1.00 | 7,279 |
import finzdata as yf
yf.Ticker("ZMUN").short_interest # every report since 2017
yf.Client().short_interest(["ZMUN"], start="2018-01-01")Unclassified (ETFs, funds, other) short interest · ZMUN price history · Who owns ZMUN · All short interest