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Fundology

ETF · iShares

IDGA iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP

ISIN IE0006NB6WZ4London Stock Exchange: IDGABlackRock, Inc.

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Latest close

LSE

£4.62

on

Ongoing charge
0.10% a year
Fund size
£56.0m

Source: TradingView, as of , at least 15 min delayed

At a glance

As of 30/09/2026, IDGA (iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP, ISIN IE0006NB6WZ4) closed at £4.62 on the London Stock Exchange. Its ongoing charge is 0.10% a year (about £10 on £10,000). Over the year to 30/09/2026 its total return was −8.5%, or −11.3% after UK CPIH inflation.

Past returns

Total return: the change in the fund’s value with any income reinvested, after its ongoing charges. Periods to .
1 year to 30/09/2026
−8.5%
−11.3% after inflation

Returns: TradingView (delayed data). Inflation: ONS CPIH, latest month published.

How we work it out:ReturnsReturns after inflationTotal returnReal returnCPIH

Calendar-year and 12-month returns

Calendar-year returns of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP in pounds (price, with income reinvested in the fund): 2025 +4.5%; 2026 to 30/09/2026 −8.3%. Returns of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP in pounds (price, with income reinvested in the fund) over the 12 months to 30/09/2026: −8.3%; to 30/09/2025: −6.0%.

Calendar-year returns of IDGA, in pounds (price, with income reinvested in the fund), to 30/09/2026
YearReturnAfter inflation
to −8.3%−10.9%
+4.5%+0.9%
Returns of IDGA over 12-month periods to 30/09/2026, in pounds (price, with income reinvested in the fund)
12 months toReturnAfter inflation
from −8.3%Not available
from −6.0%−9.6%

Source: Fundology, from recorded closes and the data vendor’s weekly price history, as of , inflation: ONS CPIH

How we work it out:Calendar-year returnsWhat a calendar-year return isAccumulating and distributing

Risk: volatility and largest fall

How far the price has swung and fallen. The same record the returns come from, in pounds.

Volatility (annualised)

8.7%over 1 year

Annualised from weekly returns. Higher means bumpier.

Largest fall since March 2024
−15.7%
From to
Lowest 12-month return
−9.1%
12 months to
Highest 12-month return
+7.0%
12 months to
Below its highest weekly close since March 2024
15.7%
High of , latest

In words: Volatility of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP in pounds, annualised from weekly returns to 30/09/2026: 8.7% over 1 year. Largest fall in the price of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP since March 2024, in pounds: −15.7% from 06/09/2024 to 30/09/2026. The lowest 12-month return of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP in pounds (price, with income reinvested in the fund) since March 2024 was −9.1% (12 months to 30/09/2026); the highest was +7.0% (12 months to 09/01/2026). On 30/09/2026 the price of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP was 15.7% below its highest weekly close since March 2024 (06/09/2024), in pounds.

Source: Fundology, from recorded closes and the data vendor’s weekly price history, as of , price, with income reinvested in the fund

How we work it out:Risk figuresFallsVolatilityLargest fall

Charges compared with similar funds

The ongoing charge is taken from the fund’s value every day, so the returns on this page are already after it. Platform and dealing fees are charged separately.
Ongoing charge
0.10%
a year
On £10,000
£10
a year, roughly
Over five years
£50
of £10,000, before growth
Among 275 government bond funds, share classes counted once
  • 76 charge less
  • 37 the same
  • 161 charge more

Ongoing charge of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP 0.10% a year, as of 01/10/2026: 161 of the 274 other government bond funds charge more, 37 the same and 76 less (share classes counted once).

Source: Fund ongoing charges via TradingView, as of

A lower charge is not a promise of a higher return: what the fund holds matters more. Charges are the fund’s own published ongoing charges figure.

Read more:Ongoing charge (OCF)OCF and TERFee dragHow charges add up

In plain English

iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP is an exchange-traded fund (ETF) from iShares, launched in 2024.

It tracks the US Treasury 20+ Year Index.

You buy and sell it through a share-dealing account or platform during stock-market hours, like a share.

Its ongoing charge is 0.1% a year — about £10 a year on every £10,000 invested, taken from the fund's value rather than billed to you.

Income from its investments is reinvested inside the fund, so it shows up as a rising price rather than cash paid to you.

It is currency-hedged: it aims to remove most of the effect of exchange-rate moves against the pound.

Government bonds: Loans to governments, such as UK gilts and US Treasuries. They pay interest; their prices move when interest rates change.

Terms:ETFIndex fundUCITSAccumulating or incomeCurrency hedgingShare classISIN

Key facts

Ticker
IDGA
ISIN
IE0006NB6WZ4
Provider
iShares
Tracks
US Treasury 20+ Year Index
Structure
ETF
An exchange-traded fund: bought and sold on the stock exchange through the day, like a share.
Income
Accumulating
Income is reinvested inside the fund, so it shows up as a rising price rather than cash paid to you.
Ongoing charge
0.10% a year · about £10 on £10,000
Fund size
£56.0m
Launched
Domicile
Ireland
Can be held in
ISA and SIPP
Currency hedged
Yes, to pounds
Price currency
Pounds (GBP)
Category
Government bonds

Price chart

Closing price
£4.62−6.3% since 27/07/2026 · closing price
IDGA closing price: £4.93 on 27/07/2026, £4.62 on 30/09/2026 (−6.3%); low £4.62, high £4.93.

Since 27/07/2026, the closing price went from £4.93 on 27/07/2026 to £4.62 on 30/09/2026 (−6.4%). The lowest close shown was £4.62 on 30/09/2026 and the highest £4.93 on 27/07/2026.

Chart: closing prices we have recorded since 27/07/2026.

Source: TradingView, as of , at least 15 min delayed

Five years of prices, and after inflation

8 weekly closes, from 27/07/2026 to 30/09/2026. The same history in September 2026 pounds, adjusted with ONS CPIH inflation.

Create a free account to see the 5-year price chart and the after-inflation chart

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How we work it out:Prices and returnsNAV and price

Funds tracking the same index

4 funds track US Treasury 20+ Year Index, this one included and share classes counted once; their ongoing charges range from 0.07% to 0.10% a year (30/09/2026).

4 funds that track the US Treasury 20+ Year Index, listed by name. Returns are the data vendor’s, in pounds, with income reinvested unless marked “price”.
Fund1 year5 years
iShares USD Treasury Bond 20+yr UCITS ETF Hedged GBPDistributing · Currency hedged · 0.10% a year−8.5%−37.4%
iShares USD Treasury Bond 20+yr UCITS ETFDistributing · 0.07% a year−7.1%−33.4%
iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBPThis fundAccumulating · Currency hedged · 0.10% a year−8.5%Not reported
iShares USD Treasury Bond 20+yr UCITS ETF USD (Accumulating)Accumulating · 0.07% a year−7.4%−34.0%

Source: TradingView reported returns and fund ongoing charges, as of

Read more:Index fundsTracking differenceHow funds are compared

Other versions of this fund

iShares’s other share classes and funds on the US Treasury 20+ Year Index. They can differ in how income is paid, currency hedging and charge.

Read more:Share classesAccumulating or incomeCurrency hedging

Risk and return in depth

Ratios that weigh return against its ups and downs, every rolling period rather than a few fixed ones, and each large fall with how long it took to recover.

  • Sharpe, Sortino and Calmar ratios

    Sharpe, Sortino and Calmar ratios over 1 year, from weekly returns in pounds.

    With a free account

  • Rolling returns

    The full range of 78 rolling 12-month returns since March 2024, in pounds, with how often they were above zero.

    With a free account

  • Largest falls and recoveries

    The 2 largest falls since March 2024, in pounds, with how many weeks each took to reach its low and to recover.

    With a free account

Create a free account to see the risk ratios, every rolling return and each large fall and its recovery

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  • Moves compared with a similar fund

    Correlation and beta of weekly returns in pounds against iShares Core UK Gilts UCITS ETF, over the three years to 30/09/2026 (121 weeks).

    Pro

Pro — currently by invitation

Pro includes moves against a comparable fund

Pro is open by invitation while it is being built. There is nothing to buy. To ask about access, email [email protected].

Questions people ask

What is the ongoing charge of IDGA?

The ongoing charge of IDGA is 0.10% a year — about £10 a year on every £10,000 invested, taken from the fund’s value rather than billed to you. Platform and dealing fees are charged separately. Ongoing charge of iShares USD Treasury Bond 20+yr UCITS ETF 1AccumHedged GBP 0.10% a year, as of 01/10/2026: 161 of the 274 other government bond funds charge more, 37 the same and 76 less (share classes counted once).

What does IDGA track?

IDGA tracks the US Treasury 20+ Year Index.

Is IDGA accumulating or distributing?

IDGA is accumulating: income is reinvested inside the fund, so it shows up as a rising price rather than cash paid to you.

What is the ISIN of IDGA?

The ISIN of IDGA is IE0006NB6WZ4. An ISIN identifies one exact share class of a fund; IDGA is its ticker on the London Stock Exchange.

What were IDGA’s returns in each of the last five years?

Calendar-year returns of IDGA in pounds (price, with income reinvested in the fund): 2025 +4.5%; 2026 to 30/09/2026 −8.3%. Past performance is not a guide to future returns.

How has IDGA done after inflation?

Over the year to 30/09/2026 IDGA’s total return was −8.5%, or −11.3% after UK CPIH inflation. Past performance is not a guide to future returns.

Similar funds

More government bond funds, largest first. Size is a fact, not a verdict.
All government bond fundsEvery fund we cover

Sources and dates

Prices
London Stock Exchange closes via TradingView, at least 15 minutes delayed, latest
Returns
TradingView reported returns (net asset value with income reinvested where available)
Calendar years, risk
Fundology, from recorded closes (weekly history from the data vendor where our record is short)
Inflation
ONS CPIH, latest month used August 2026
Charges
The fund’s ongoing charges figure, via TradingView
Identity
FCA Financial Instruments Reference Data System (FIRDS) and the issuer
Fund size
TradingView, converted to pounds at the latest ECB reference rate

Methodology:Data sourcesReturnsCategoriesAll methods

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