SUB iShares Short-Term National Muni Bond ETF

ETF

ETF quote, holdings, sector allocation, technicals, and options analytics. Fibonacci levels

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.

SUB — —
Key stats
About

iShares Short-Term National Muni Bond ETF (SUB) ETF

No description available.

Exchange
ARCX
Inception
2008-11-05
Has Options
No
Homepage
https://www.ishares.com/us
Fund profile
holdings as of Oct 19, 2026issuer datathrough May 2026flows, SEC filings
Municipal Bond Short Muni#1 of 27 by assets iShares US Index-tracking
Expense ratio
0.07%
issuer, Oct 21, 2026
Assets
$13.0B
issuer-reported, Oct 19, 2026
Trailing yield
2.59%
paid monthly
Average daily volume
$152M
30 sessions
Holdings
3,095
top 10 are 2.5%
Listed
Nov 5, 2008
NYSE Arca
Net asset value
$105.10
issuer, Oct 20, 2026 · closed +0.20% to NAV
Median bid/ask spread
0.01%
30 days, issuer-reported
30-day SEC yield
3.31%
issuer, Oct 19, 2026
Return on NAV, 1 year
+0.2%
issuer, through Sep 30, 2026 · 3 years +2.8% a year · 5 years +1.2% · 10 years +1.3%
Distributions, 12 months
$2.73 a share
issuer, through Oct 1, 2026: 100% income
Closure risk, 12 months
0.1%
low · model
Tracking difference
-0.09 pts
vs index, after fees, FY 2026
FrenzyCap ETF score
98
how it is built
Cost94
Liquidity100
Scale100
Diversification100

Moves with. Long Treasuries (27% of its variance, beta 0.09); Developed markets ex-US over US (4% of its variance, beta 0.02). These factors explain 32% of its daily moves over the last year, so most of what drives this fund is something else.

Stated objective. The iShares Short-Term National Muni Bond ETF (the Fund ) seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds with remaining maturities between one month and five years. (from the fund's prospectus)

All 3,095 holdingsFlow historyOverlap toolAll Short Muni ETFs

Fund flows
daily as of Oct 19, 2026issuer datathrough May 2026SEC filings
Oct 19, 2026
+$205M
latest day
Latest 5 trading days
+$425M
Latest 21 trading days
+$1.2B
+9.3% of assets
Year to date
+$2.7B
+$3.0B over 12 months
Each day
Net creations of SUB by day, Sep 21, 2026 to Oct 19, 2026
DayNet flow
Oct 19, 2026+$205M
Oct 16, 2026+$58M
Oct 15, 2026+$163M
Oct 14, 2026$0
Oct 13, 2026$0
Oct 12, 2026+$131M
Oct 9, 2026+$89M
Oct 8, 2026+$83M
Oct 7, 2026+$135M
Oct 6, 2026+$37M
Oct 5, 2026+$16M
Oct 2, 2026+$26M
Oct 1, 2026+$26M
Sep 30, 2026+$26M
Sep 29, 2026+$31M
Sep 28, 2026+$130M
Sep 25, 2026$0
Sep 24, 2026$0
Sep 23, 2026+$10M
Sep 22, 2026$0
Sep 21, 2026+$37M

Daily figures are the change in shares outstanding times net asset value, both as the issuer publishes them each day.

May 2026
+$149M
latest reported month
Latest 3 months
+$479M
+4.3% of assets
Latest 12 months
+$1.6B
+14.4% of assets
Jun 2025: +$286MJul 2025: +$106MJulAug 2025: +$149MSep 2025: −$144M−$144MSepOct 2025: −$5.3MNov 2025: +$37MNovDec 2025: +$309M+$309MJan 2026: +$295MJanFeb 2026: +$107MMar 2026: +$149MMarApr 2026: +$181MMay 2026: +$149MMay
View as a table
Net flows of SUB by month, Jun 2025 to May 2026
MonthNet flow
May 2026+$149M
Apr 2026+$181M
Mar 2026+$149M
Feb 2026+$107M
Jan 2026+$295M
Dec 2025+$309M
Nov 2025+$37M
Oct 2025−$5.3M
Sep 2025−$144M
Aug 2025+$149M
Jul 2025+$106M
Jun 2025+$286M

Net creations and redemptions from the fund's SEC filings, which become public about 60 days after each quarter. Every month since 81 months ago

Similar funds
FundOverlapFeeAssets1Y
JMSTJPMorgan Ultra-Short Municipal Income ETF—0.18%$8.0B−0.4%compare
SHMState Street SPDR Nuveen ICE Short Term Municipal Bond ETF—0.20%$3.5B−2.2%compare
VTESVanguard Short-Term Tax-Exempt Bond ETF—0.05%$2.0B−2.1%compare
CGSMCapital Group Short Duration Municipal Income ETF—0.25%$1.7B−1.6%compare
MEARiShares Short Maturity Municipal Bond Active ETF—0.26%$1.5B−1.2%compare

The largest other funds in the Short Muni category.

Under the hood
fiscal year to Feb 28, 2026SEC census
Authorized participants
9 active
of 36 with agreements; top 3 did 73%
Created · redeemed
$2.2B · $457M
over the fiscal year
Redemptions in kind
21%
creations 3% in kind
Creation unit
50,000
shares
Securities lending
authorized, none lent
Return vs index
-0.09 pts
after fees; -0.02 before; daily s.d. 0.10

From the fund's annual census filing with the SEC. In-kind redemptions are what let an ETF shed appreciated securities without realising gains.

ETF Profile
holdings as of 2026-10-20
Holdings
3112
AUM
$13.0B
Provider
iShares (BlackRock)
Inception
2008-11-05
Exchange
ARCX
Data As Of
2026-10-20
Expense Ratio
0.07%
Dividend Yield
2.59%
Distribution
Monthly
Recent distributions
Ex-Date Pay Date Amount Type
2026-10-01 2026-10-06 $0.2348 CD
2026-09-01 2026-09-04 $0.2279 CD
2026-08-03 2026-08-06 $0.2281 CD
2026-07-01 2026-07-07 $0.2325 CD
2026-06-01 2026-06-04 $0.2231 CD
2026-05-01 2026-05-06 $0.2310 CD
Asset Allocation
Top Holdings
top 50 of 3112 holdings
Symbol Name Weight % Asset Class Country
— BLACKROCK LIQ MUNICASH CL INS MMF 3.38% Cash/Money Market US
— CALIFORNIA (STATE OF) 0.39% Municipal Bond US
— NEW JERSEY ECONOMIC DEV AUTH R 0.31% Municipal Bond US
— TRIBOROUGH BRDG & TUNL AUTH N 0.31% Cash/Money Market US
— BAY AREA TOLL AUTH CALIF TOLL 0.26% Municipal Bond US
— CALIFORNIA ST 0.23% Municipal Bond US
— NEW YORK ST URBAN DEV CORP REV 0.21% Municipal Bond US
— UNIVERSITY CALIF REVS 0.21% Municipal Bond US
— NEW JERSEY ST TPK AUTH TPK REV 0.21% Municipal Bond US
— CALIFORNIA ST 0.21% Municipal Bond US
— NEW JERSEY ST 0.21% Municipal Bond US
— CALIFORNIA ST 0.20% Municipal Bond US
— TEXAS ST 0.20% Municipal Bond US
— GEORGIA ST 0.20% Municipal Bond US
— MARYLAND ST 0.19% Municipal Bond US
— NEW YORK N Y CITY TRANSITIONAL 0.19% Cash/Money Market US
— NEW JERSEY ST EDL FACS AUTH RE 0.19% Municipal Bond US
— SEATTLE WASH MUN LT & PWR REV 0.18% Cash/Money Market US
— MASSACHUSETTS ST 0.18% Municipal Bond US
— CONNECTICUT ST SPL TAX OBLIG R 0.18% Municipal Bond US
— NEW YORK N Y CITY TRANSITIONAL 0.18% Municipal Bond US
— NEW YORK N Y 0.18% Municipal Bond US
— KING CNTY WASH SWR REV 0.18% Cash/Money Market US
— NEW JERSEY ST TPK AUTH TPK REV 0.17% Municipal Bond US
— OHIO ST WTR DEV AUTH REV 0.17% Municipal Bond US
— PENNSYLVANIA ST 0.17% Municipal Bond US
— NEW YORK N Y CITY TRANSITIONAL 0.17% Municipal Bond US
— PENNSYLVANIA ST 0.17% Municipal Bond US
— CONNECTICUT ST HEALTH & EDL FA 0.17% Municipal Bond US
— NEW YORK ST DORM AUTH SALES TA 0.17% Municipal Bond US
— GEORGIA ST 0.17% Municipal Bond US
— KENTUCKY STATE PROPERTY AND BUILDI 0.16% Municipal Bond US
— LOUISIANA (STATE OF) 0.16% Municipal Bond US
— SAN ANTONIO TEX WTR REV 0.16% Cash/Money Market US
— MINNESOTA PUB FACS AUTH ST REV 0.16% Municipal Bond US
— MIAMI-DADE CNTY FLA SCH BRD CT 0.16% Municipal Bond US
— WASHINGTON ST 0.16% Municipal Bond US
— WASHINGTON ST 0.16% Municipal Bond US
— COLORADO ST BRD GOVERNORS UNIV 0.15% Cash/Money Market US
— CALIFORNIA ST 0.15% Municipal Bond US
— LOS ANGELES CALIF DEPT WTR & P 0.15% Municipal Bond US
— HOUSTON TEX 0.15% Municipal Bond US
— NEW JERSEY ST EDL FACS AUTH RE 0.15% Municipal Bond US
— ILLINOIS ST 0.15% Municipal Bond US
— NEW JERSEY ST 0.15% Municipal Bond US
— WASHINGTON ST 0.15% Municipal Bond US
— UNIVERSITY CALIF REVS 0.15% Municipal Bond US
— LOS ANGELES CALIF DEPT WTR & P 0.14% Municipal Bond US
— VIRGINIA COLLEGE BLDG AUTH VA 0.14% Municipal Bond US
— NEW YORK ST DORM AUTH ST PERS 0.14% Municipal Bond US
Non-Equity Breakdown
iShares Short-Term National Muni Bond ETF · NPORT-P period 2026-05-31 (filed 2026-07-24)
Net assets: $11.26B · 2917 total positions · equity 0.00% · non-equity 100.40%
Non-equity holdings — 2917 positions, 100.40% of NAV
Category Weight Value Positions
Municipal 94.95% $10.69B 2873
Short-term investment 5.46% $614.3M 44
Chart
Seasonality
'21'22'23'24'25'26Avg
Jan0.19%-1.22%0.59%-0.11%0.35%0.54%0.06%
Feb-0.43%-0.27%-1.40%-0.10%0.31%0.32%-0.26%
Mar0.24%-1.22%1.34%-0.23%-0.23%-0.53%-0.10%
Apr0.17%-0.73%-0.48%0.04%0.00%0.19%-0.13%
May0.05%1.08%-0.28%-0.28%0.58%0.17%0.22%
Jun0.09%0.01%0.45%0.49%0.59%0.13%0.29%
Jul0.32%0.55%0.11%0.94%0.53%-0.08%0.40%
Aug-0.08%-1.20%0.02%0.59%0.30%0.29%-0.01%
Sep-0.27%-1.24%-0.74%0.43%-0.05%-1.30%-0.53%
Oct-0.15%-0.12%0.44%-0.55%-0.07%0.80%*0.06%
Nov0.05%1.77%1.80%0.47%0.41%--0.90%
Dec-0.07%-0.13%0.60%-0.11%0.29%--0.12%
Total0.11%-2.74%2.43%1.58%3.05%0.52%0.82%
Technical Indicators

Quick-reference for reading the values below. Indicators combine to confirm a view — no single one is a trade signal on its own.

Trend Indicators
  • SMA 20 / 50 / 200 — price above = uptrend, below = downtrend. SMA 50 crossing SMA 200 is the golden/death cross.
  • EMA 12 / 26 — faster-reacting averages; 12 above 26 is short-term bullish.
  • MACD — bullish when MACD > signal (green badge), bearish when below. Divergence from price often precedes reversals.
  • ADX (14) — trend strength regardless of direction. <20 range, 20–25 weak trend, 25–50 trend, >50 strong trend.
  • +DI / −DI — +DI > −DI favors bulls; the reverse favors bears. Read alongside ADX.
Momentum Oscillators
  • RSI (14) — <30 oversold, >70 overbought. 40–60 is neutral; trending names can stay extreme.
  • Stochastic %K / %D — <20 oversold, >80 overbought. %K crossing %D is an early momentum signal.
  • Williams %R — inverted scale: <−80 oversold, >−20 overbought.

Oscillators work best in range-bound markets; in strong trends they give premature reversal signals.

Volume & Volatility
  • Bollinger Bands — price at upper band = overbought, lower = oversold. Narrow bands (squeeze) often precede expansion.
  • OBV — cumulative volume; rising OBV confirms uptrend, falling OBV confirms downtrend. Divergence from price is a warning.
  • Vol SMA 20 / Vol ROC — today's volume vs. 20-day average. Positive ROC with price move = conviction.
  • ATR / True Range — average daily $ move; sizing and stop-loss reference.
  • HV 20 / 30 / 60 — realized (historical) volatility. Compare to IV on the options cards: IV > HV = rich premium.

Confluence matters: trend + momentum + volume agreeing carries far more weight than any single indicator. For how these feed the spread scanner score, see the algorithm docs →

Trend Indicators

SMA 20: $104.77
SMA 50: $105.44
SMA 200: $106.33
Current: $105.41
EMA 12: $105.09
EMA 26: $105.08
MACD: 0.0054 | Signal: 0.1341
BEARISH
ADX (14): 32.02
TREND
+DI: 34.53
−DI: 20.42

Momentum Oscillators

RSI (14): 62.22
NEUTRAL
Stoch %K: 96.29
Stoch %D: 95.27
Williams %R: 0.00

Volume & Volatility

BB Upper: $105.52
BB Lower: $104.01
NEUTRAL
OBV: 28,028,289
Vol SMA 20: 1,847,875
Vol ROC: -39.75%
ATR: $0.21
True Range: $0.14
HV 20: 2.4%
HV 30: 2.3%
HV 60: 1.9%

Data Summary

Data Points: 500
Last Updated:
Date Range: 2024-10-23T00:00:00 – 2026-10-21T00:00:00
AI Analysis

Click Frenzy-Pro™ for an AI analysis of this ticker.

Analysis includes technical indicators, news sentiment, risk assessment, and specific price levels to watch.

SUB Options Activity & IV Rank

Loading options activity...
Spread Scanner GPU
Full Algorithm Docs ↗

Each spread is ranked by a composite score built in three stages. Full documentation →

Stage 1 — Base Score (GPU scanner)

score = P(profit) × (credit / spread_width)
P(profit) from short leg delta (1 − |delta|), penalised above 85%. Credit uses mid-price to handle illiquid chains fairly.

Stage 2 — Skew Adjustment (±25% cap)

RR and BF (30-delta) from the persisted per-symbol skew snapshot — wing strikes picked by real greeks.delta, not a moneyness proxy. Put skew boosts bull puts, penalises bear calls. High butterfly boosts iron condors. Calendars are skew-neutral.

Stage 3 — Technical Overlay (±50% cap, 5 groups)
Group 1 · Directional Bias (±0.25)
  • RSI <40 bullish / >60 bearish
  • MACD crossover + histogram trend
  • Price vs SMA 50 & SMA 200
Group 2 · Momentum (±0.10)
  • Stochastic %K <20 / >80
  • Williams %R <−80 / >−20
Group 3 · Volatility (up to −0.25 / +0.15)
  • Blended ATR + straddle expected-move penalty
  • Bollinger Band signal (+ counter-trend penalty)
  • BB width — vol contraction boost for ICs
Group 4 · IV Regime (±0.15)
  • IV rank ≥ 75 → strong boost for credit spreads
  • IV rank < 25 → penalty (selling cheap vol)
Group 5 · Liquidity (penalty up to −0.10)
  • Min open interest across all legs
  • OI < 100 → −0.10 · OI < 500 → −0.05

score = base_score × skew_multiplier × tech_multiplier
Both multipliers are shown per spread. Beta is informational only — ATR already captures realized vol. Full algorithm documentation →

Enter a ticker to scan for optimal spread opportunities.

Evaluates all bull put, bear call, iron condor, and calendar spread combinations using GPU-accelerated analysis.

Skew (Wing IV − ATM IV)
DTE:
Wing Δ:
Metric:
Wing vs ATM
IV(put wing) − IV(ATM), in vol points

How much the OTM put trades above (or below) the at-the-money strike. Measures the height of the put-side tail relative to ATM — i.e. how expensive crash insurance is on this name.

  • Positive (typical) — wing IV > ATM IV. Standard equity put skew: portfolios bid up crash protection, so OTM puts trade richer than ATM.
  • Near zero or negative (unusual) — wing IV ≤ ATM IV. Flat or inverted put side. Common when there's no fear demand, in tightly mean-reverting names, or right after an earnings catalyst clears.
  • Percentile vs own 3-yr history: high = wings rich (good time to sell wing premium); low = wings cheap (good time to buy protection).
  • Not directional — high or low wings don't predict up or down moves. It's a price tag on tail insurance, not a forecast.
Risk Reversal
IV(call wing) − IV(put wing), equal delta on each side

Which side of the smile is the market paying up for? Measures the tilt of the surface — call skew vs put skew at matched deltas.

  • Negative (typical) — puts richer than calls. Standard equity behavior: hedging demand makes puts carry a premium. Most large-caps sit in the −1 to −5 vol-point range.
  • Strongly negative (< −5 pts) — heavy downside hedging, elevated fear, or an upcoming catalyst (earnings, FDA, macro event). Worth flagging.
  • Positive — calls richer than puts. Unusual for equities; signals bullish momentum, short-squeeze positioning, or takeover/M&A speculation.
  • Near zero — symmetric surface. Market sees roughly equal up/down risk. Rare for large-caps; more common in commodities and FX.
Reading them together

Wing-vs-ATM tells you how expensive the tails are. Risk Reversal tells you which side is favored. Combined:

  • High wing percentile + deeply negative RR → strong put bid; stress or major event priced in. Owning protection costs a premium; selling put premium is dangerous.
  • Low wing percentile + near-zero RR → complacency; insurance cheap and balanced. Good environment to add cheap downside hedges.
  • Positive RR + elevated wings → call-side fear-of-missing-out; common in squeeze setups. Upside calls expensive, downside puts not bid.
14 DTE / 10d —
— pts EXTREME
ATM — / Wing —
30 DTE / 10d —
— pts EXTREME
ATM — / Wing —

Percentile is the rank of today's reading within ~3 years of this symbol's own history. High percentile = wings are rich relative to history; not a directional signal. Skew is read off the chain in real time, not from CBOE SKEW.

Volatility Surface

Enter a ticker to render the implied volatility surface.

Volatility Smile

Enter a ticker to render the implied volatility smile.

IV Rank (7 DTE)
IV Rank (30 DTE)
Straddle Price (30 DTE)
Beta Analysis

Risk Metrics

Beta: 0.0309
Alpha: -1.51%
Correlation: 0.2567
R-Squared: 6.6%
Stock Volatility: 1.5%
Market Volatility: 12.7%

Analysis Details

Benchmark: SPY
Data Points: 251
Period: 252 trading days
Interpretation:
Low volatility - stock moves less than market
Beta & Alpha Over Time

SUB Institutional Ownership (13F)

Latest filings — 2026-09-30

Institutional managers with $100M+ AUM file Form 13F-HR quarterly, due 45 days after quarter end. Holdings are reported gross at quarter-end market value — they are a snapshot, not a real-time position.

  • Shares — long equity positions in this name, aggregated across share classes.
  • Calls / Puts — notional value of long call / put exposure where this ticker is the underlying.
  • % of Float — holder's reported shares divided by the latest diluted shares outstanding. Sums above 100% indicate large custodian / prime broker positions where the same shares are reported by multiple filers.
  • Custodian badge — filers with more than 5,000 holdings are typically broker-dealers / custodians reporting customer-held shares, not active managers.

Each filer is counted once at its latest 13F-HR filing. New filings are ingested on a weekly cadence.

961 filers93,168,890 shares$9.91B value
# Filer Shares Value % of Total % of Float Period
1 Bank of America Corp Custodian 10,837,871 $1.15B 11.64% — 2026-06-30
2 MERCER GLOBAL ADVISORS INC /ADV 10,432,746 $1.11B 11.21% — 2026-06-30
3 Morgan Stanley Custodian 5,576,953 $593.78M 5.99% — 2026-06-30
4 Bank of New York Mellon Corp Custodian 4,745,689 $505.27M 5.10% — 2026-06-30
5 UBS Group AG Custodian 3,083,779 $328.33M 3.31% — 2026-06-30
6 Creative Planning Custodian 2,954,555 $314.57M 3.17% — 2026-06-30
7 SEI INVESTMENTS CO Custodian 2,950,954 $314.19M 3.17% — 2026-06-30
8 Northwestern Mutual Wealth Management Co 1,551,444 $165.18M 1.67% — 2026-06-30
9 Citigroup Inc. Custodian 1,531,445 $163.05M 1.65% — 2026-06-30
10 CAPTRUST FINANCIAL ADVISORS 1,388,673 $147.85M 1.49% — 2026-06-30
11 Franklin Resources, Inc. Custodian 1,225,020 $130.43M 1.32% — 2026-06-30
12 Ameriprise Financial, Inc. Custodian 1,139,510 $121.28M 1.22% — 2026-06-30
13 LPL Financial LLC Custodian 1,024,779 $109.11M 1.10% — 2026-06-30
14 Goldman Sachs Group Inc Custodian 953,664 $101.54M 1.02% — 2026-06-30
15 Robinhood Asset Management, LLC 901,267 $95.96M 0.97% — 2026-06-30
16 Envestnet Asset Management, Inc. 856,767 $91.22M 0.92% — 2026-06-30
17 Mariner, LLC 850,660 $90.57M 0.91% — 2026-06-30
18 TIAA-CREF INDIVIDUAL & INSTITUTIONAL SERVICES, LLC 813,111 $86.57M 0.87% — 2026-06-30
19 Focus Partners Wealth 751,428 $80.00M 0.81% — 2026-06-30
20 Raymond James Financial, Inc. Custodian 742,589 $79.06M 0.80% — 2026-06-30
21 Salomon & Ludwin, LLC 726,711 $77.32M 0.78% — 2026-06-30
22 NISA INVESTMENT ADVISORS, LLC 675,290 $71.90M 0.73% — 2026-06-30
23 Bank of Montreal Custodian 624,527 $66.49M 0.67% — 2026-06-30
24 Royal Bank of Canada Custodian 590,539 $62.87M 0.63% — 2026-06-30
25 CX Institutional 599,280 $62.65M 0.63% — 2026-09-30
# Filer Notional Value % of Total Period
# Filer Notional Value % of Total Period
Constituent Performance

Click any bar to view the full quote for that stock.

Constituents
Symbol Name Weight % Price 1 Day 1 Week 1 Month