MUB Fail-to-Deliver
iShares National Muni Bond ETF (MUB) operates in the Financial Services sector, specifically the Asset Management - Bonds industry, with a market capitalization near $46.15B, listed on AMEX, carrying a beta of 0.90 to the broader market. This exchange-traded fund is designed to closely replicate the performance of a designated index, which exclusively comprises high-quality municipal bonds issued across the United States. public since 2007-09-10.
Fail-to-deliver (FTD) data from the SEC tracks settlement failures where shares were not delivered within the standard settlement period. Persistent FTDs may indicate naked short selling or settlement issues and are monitored by regulators.
- Latest Date
- 2026-07-14
- Latest FTD Quantity
- 86
- Latest Price
- $106.90
- 30-Day Avg FTD
- 37.9K
- 30-Day Total FTD
- 1.1M
Showing 30 days of SEC fail-to-deliver data for iShares National Muni Bond ETF.
Learn how fails-to-deliver is reported and how to read the data →
MUB most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| PUT | $107.00 | Aug 21, 2026 | 0 | 5.0K | 950.9% | $1.05 | $1.45 |
| PUT | $106.00 | Aug 21, 2026 | 1 | 11.7K | 607.6% | $0.15 | $0.40 |
| CALL | $106.00 | Sep 18, 2026 | 2 | 7.5K | 584.6% | $0.20 | $0.50 |
| PUT | $105.00 | Sep 18, 2026 | 0 | 7.5K | 293.2% | $0.25 | $0.45 |
Top 4 contracts from the institutional-grade nightly options scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked MUB fail to deliver questions
- What is the latest MUB fail-to-deliver count?
- As of Jul 14, 2026, iShares National Muni Bond ETF (MUB) fail-to-deliver quantity is 86 shares, with a 30-day average of 37.9K shares. The SEC publishes FTD data twice monthly: first-half data at month-end, second-half around the 15th of the following month.
- What is the FTD aggregate net balance?
- FTD figures represent the aggregate net balance in NSCC's Continuous Net Settlement (CNS) system, not the gross failed-share count. The published numbers run 2-6 weeks stale relative to the underlying settlement date.
- How do MUB FTDs affect options pricing?
- Persistent FTDs flag hard-to-borrow conditions that distort put-call parity: in HTB names, synthetic long stock (long call + short put at the same strike) trades below the frictionless-parity price by approximately the borrow rebate. The discount equals the lending revenue forgone by holding the synthetic instead of actual shares. Reg SHO threshold-list inclusion follows from sustained FTD persistence.