TLT Hits a 22-Year Low: What's Driving the Long Bond Rout

The iShares 20+ Year Treasury Bond ETF (TLT) fell to $81.91 on August 14, 2026 — its weakest level since June 2004, erasing two decades of price gains and sitting roughly 52% below its all-time high (Benzinga). The ETF tracks an index of U.S. Treasury bonds with remaining maturities greater than twenty years. It closed the session with a previous close of $82.04 and an opening price of $81.77 (CNBC).

The fund's 52-week high stood at $92.19 (CNBC), meaning TLT has fallen approximately 11% from that peak to its August 14 close. The drawdown from the fund's all-time high, however, extends far deeper: at $81.91, the ETF sits about 52% below its record top (Benzinga).

As of August 14, iShares reported a year-to-date NAV total return decrease of 3.47% for TLT, alongside a 30-day SEC yield of 5.18% and a 12-month trailing yield of 4.76% (iShares). Yahoo Finance's data, also as of August 14, shows a 1-year return of 1.39% and a year-to-date return of 3.35%, compared with a category average of 0.67% (Yahoo Finance). The net expense ratio is 0.15% (Yahoo Finance).

The discrepancy between the iShares-reported YTD NAV total return (negative 3.47%) and Yahoo Finance's YTD return figure (positive 3.35%) likely reflects methodological differences in how each calculates returns — NAV versus market price basis, and different reinvestment assumptions. Both figures are reported as of the same date.

For context on what drives a fund like TLT to levels last seen over two decades ago: the ETF holds long-duration U.S. Treasury securities. Duration, in plain terms, is a measure of how sensitive a bond's price is to interest-rate changes — the longer the duration, the sharper the price move when rates shift. TLT focuses on bonds with 20+ year maturities, which maximizes that sensitivity. When yields on long-dated Treasuries rise, the market value of existing bonds with lower coupon rates falls, and the longer the duration, the steeper the decline. The fact that TLT has given up twenty years of price appreciation points to the scale of the long-rate move since the fund's peak.

The broader context here is that a 52% decline from its high is an extraordinary drawdown for a portfolio of U.S. government securities, which carry no credit risk in the traditional sense — meaning the U.S. government is not expected to default on its obligations. The loss is entirely a duration and mark-to-market phenomenon. Mark-to-market means reflecting the current market price of the bonds, not their face value at maturity. Holders who bought at or near the top and need to sell at current levels face realized principal losses that the fund's yield, at 5.18% on a 30-day SEC basis, would take years to recoup. The 12-month trailing yield of 4.76% reflects what the portfolio has actually distributed over the past year, which remains well below the capital depreciation many late entrants have absorbed.

Looking at the cross-section of data, TLT is generating income at levels not seen in years. The 5.18% 30-day SEC yield — a standardized measure of the fund's investment income over the past 30 days — reflects the current coupon income of the underlying portfolio, and that figure would rise further if long-duration Treasury yields continue to climb. For investors with long horizons and tolerance for continued price volatility, a higher running yield partially offsets mark-to-market pain. But the YTD NAV total return of negative 3.47% on the iShares calculation makes clear that price depreciation has outpaced income year to date on that basis.

The fundamental question for anyone watching TLT at these levels is whether long-duration Treasury yields have reached a durable peak. The fund's price will not stabilize until the long end of the yield curve does. What is known: TLT sits at $81.91, a 22-year low, 52% off its high, with a 5.18% SEC yield and a negative YTD total return on an NAV basis. What is not known, and what no data point here resolves, is the direction of long rates from here. That distinction is worth keeping front of mind for anyone treating the current yield as a signal to act.

iShares also offers related products, including a BuyWrite Strategy ETF covering 20+ year Treasuries and a UCITS-listed version of the 20+ year Treasury bond ETF (ticker IDTL) on its UK site (iShares; iShares UK). The official fund fact sheet for TLT is published as a PDF on iShares' domain (iShares).