Wealth Engine

Tag: TLT

  • TLT vs SGOV: Is 5.23% Worth 15 Years of Duration Risk?

    TLT vs SGOV comes down to one trade: yield versus duration. After the Fed’s hawkish September 16, 2026 hike to 3.75%–4%, the iShares 20+ Year Treasury Bond ETF (TLT) pays a 5.23% 30-day SEC yield but carries 15.02 years of duration. SGOV pays 3.65% with 0.10 years. TLT wins on income; SGOV wins on safety. With 16 of 19 Fed officials projecting another hike, duration is the risk that matters.

    Both funds hold nothing but U.S. Treasuries. Both come from iShares. Yet they are almost opposite instruments. One is a long-duration interest-rate bet; the other is a cash substitute. The gap between them has rarely mattered more than it does after last week’s rate decision.

    What changed for bond ETFs after the Fed’s September hike?

    On September 16, 2026, the FOMC raised its target range to 3.75%–4% in a unanimous 12–0 vote, with Chair Kevin Warsh saying “inflation is too high and has been for too long,” according to Schwab’s meeting recap. This was a hike, not a cut — the opposite of what most investors penciled in a year ago.

    Long yields moved with it. Per Wolf Street’s September 19 curve snapshot, the 30-year Treasury closed at 5.34% on September 18, its highest since 2007, while the 10-year held at 5.01%. The 2-year sat at 4.76% and the 3-year at 4.86%.

    That reshapes the TLT vs SGOV decision. The curve now has a “bulge” where long rates sit above short rates — so the long fund actually out-yields the cash fund. The question is whether that extra income pays you enough to carry the duration.

    TLT vs SGOV: what are you actually buying?

    TLT holds Treasuries maturing in 20 years or more; SGOV holds bills maturing in zero to three months. That single design choice drives every number below: fee, yield, size, and above all duration — the measure of how much price moves when rates move. All figures are from each fund’s iShares page, dated September 17–18, 2026.

    Metric (as of Sep 17–18, 2026)TLTSGOV
    FundiShares 20+ Year Treasury Bond ETFiShares 0–3 Month Treasury Bond ETF
    Expense ratio0.15%0.09%
    30-day SEC yield5.23%3.65%
    Average yield to maturity5.39%3.91%
    Effective duration15.02 yrs0.10 yrs
    Net assets (AUM)~$46.7B~$110.9B
    What it isLong-duration rate betCash substitute

    Note the size gap. SGOV’s roughly $110.9 billion in net assets is more than double TLT’s $46.7 billion, per iShares as of September 18 — a sign investors have crowded into safety rather than reaching for long-bond yield.

    Which yields more right now, TLT or SGOV?

    TLT yields more today. Its 30-day SEC yield is 5.23% versus SGOV’s 3.65%, a gap of 1.58 percentage points, per iShares data dated September 17, 2026. That is unusual: for most of the past three years, short cash out-yielded long bonds. The September hike and the steep long end flipped it.

    But the yields answer different questions. SGOV’s 3.65% is close to locked in for the next few weeks because its bills mature almost immediately and reset at prevailing rates. TLT’s 5.23% is the coupon income you collect — it says nothing about what happens to the fund’s price if long rates keep climbing.

    And they move in opposite directions on a pivot. If the Fed eventually cuts, SGOV’s yield falls fast (reinvestment risk), while TLT’s price would rise. If the Fed hikes again — which 16 of 19 officials projected at the September meeting, per Schwab — TLT’s price falls and SGOV simply rolls into higher-yielding bills.

    How much does TLT’s duration risk cost you?

    A lot — roughly 150 times what SGOV risks. Duration estimates the price change for a one-percentage-point move in rates. TLT’s 15.02-year duration means a 1-point rise knocks about 15% off the price; SGOV’s 0.10-year duration means about 0.10%. Here is the math on a $10,000 position in each, using the September 18 iShares figures.

    • Annual income: TLT at 5.23% pays about $523; SGOV at 3.65% pays about $365. TLT’s income edge is roughly $158 a year.
    • Annual fee: TLT at 0.15% costs $15; SGOV at 0.09% costs $9. A $6 difference — trivial next to the duration gap.
    • Price hit if long rates rise 1 point: TLT drops about 15.02%, or −$1,502. SGOV drops about 0.10%, or −$10.
    • Price gain if long rates fall 1 point: TLT rises about +$1,502; SGOV rises about +$10.

    The punchline: a single one-point rise in long-term rates would cost a TLT holder about $1,502 — wiping out roughly 9.5 years of the $158 annual yield advantage ($1,502 ÷ $158 ≈ 9.5). SGOV’s holder would lose about $10 over the same move. That is the price of the extra 1.58 points of yield.

    Is TLT’s 5.23% yield a trap?

    It can be. A headline 5.23% yield looks generous, but it is only the income leg of the return. Total return is income plus price change — and with the 30-year at a 2007-high 5.34% on September 18 and most Fed officials guiding to another hike, the price leg is where the money is won or lost.

    Here is the skeptical read: investors have chased TLT’s “high yield” through the entire rate-hiking cycle and repeatedly sat on paper losses as long rates ground higher. Buying a 15-year-duration fund because it yields 1.6 points more than cash, in the same week the Fed says it is not done, is a rate call dressed up as an income trade. If you are wrong on the path of rates, the coupon will not save you.

    SGOV is not free of criticism either. Its yield is only as good as the next few weeks of bills; the day the Fed pivots to cuts, that 3.65% starts shrinking, and you give up the price rally TLT would capture. Neither fund is “safe” in every scenario — they are safe against different risks.

    TLT vs SGOV: which is right for you?

    It depends on one thing: your view on where long rates go next, and how long you can hold. If you need the money soon or cannot stomach a double-digit drawdown, the duration in TLT is a liability. If you want to lock in 5%-plus for decades and think rates have peaked, TLT is the tool built for that bet.

    Investor goalBetter fitWhy
    Emergency fund / parking cashSGOV0.10-yr duration; ~$10 risk per 1-pt move on $10K
    Maximum principal stabilitySGOVBills mature in weeks; price barely moves
    Lock in 5%+ income for decadesTLT5.39% yield to maturity on long Treasuries
    Bet the Fed pivots to cutsTLT+$1,502 per 1-pt rate drop on $10K
    Worried short yields will fallTLTLocks a long coupon; SGOV resets lower on cuts
    Can’t tolerate drawdownsSGOVAvoids 15 years of interest-rate risk

    Many investors hold both: SGOV as the stable cash sleeve, TLT as a smaller, deliberate rate bet they size for the volatility. The mistake is treating them as interchangeable “Treasury ETFs” because they share an issuer and an asset class. On risk, they could hardly be more different.

    Frequently asked questions

    Is SGOV safer than TLT?

    On price risk, yes. SGOV’s effective duration is 0.10 years versus TLT’s 15.02 years, per iShares as of September 18, 2026. A one-point rate move barely touches SGOV but swings TLT by roughly 15%. Both carry the same U.S. Treasury credit backing.

    Why does TLT yield more than SGOV right now?

    Because the long end of the curve sits above the short end after the September hike. The 30-year was 5.34% on September 18 while short bills reset near the 3.75%–4% funds rate. That gives TLT a 5.23% SEC yield versus SGOV’s 3.65%.

    What happens to TLT if the Fed hikes again?

    If long rates rise with the hike, TLT’s price falls roughly 15% for each additional point. Sixteen of 19 FOMC officials projected at least one more hike before year-end 2026, per Schwab, which is the core risk to long duration here.

    Does SGOV ever lose value?

    Its price is nearly flat; the main risk is that income falls. When the Fed cuts, SGOV’s yield drops within weeks as maturing bills reinvest at lower rates. You keep your principal but earn less — the trade-off for near-zero duration.

    Which has lower fees, TLT or SGOV?

    SGOV, at a 0.09% expense ratio versus TLT’s 0.15%, per iShares. On $10,000 that is $9 a year versus $15 — a $6 gap that is immaterial next to the funds’ difference in interest-rate risk.

    Can I hold both TLT and SGOV?

    Yes, and many do. SGOV works as a cash-like anchor while TLT serves as a sized, intentional bet on falling long rates. Holding both lets you separate your cash needs from your interest-rate view instead of blending them.

    Is TLT worth buying at a 5.23% yield?

    That is a call on the path of long-term rates, not a straightforward income decision. The 5.23% only helps if TLT’s price holds or rises; if long yields keep climbing, price losses can dwarf the coupon. This is analysis, not a recommendation.

    The bottom line

    TLT vs SGOV is not really a yield contest — it is a duration decision. TLT pays 1.58 points more (5.23% vs 3.65%), but you buy 15.02 years of interest-rate risk to get it, and a single one-point rise in long rates would cost about $1,502 on a $10,000 stake versus $10 in SGOV.

    So the winner depends on exactly one variable: whether you think the Fed is done. With 16 of 19 officials still guiding to more hikes and the 30-year at a 2007 high, SGOV is the lower-risk hold for cash you may need. TLT is the vehicle for investors who want to lock a long coupon and are willing to bet, with money, that rates have peaked. Pick the fund that matches your rate view — and size the duration to the loss you could actually sit through.

    For related reading, see our breakdowns of T-bills vs money market funds, TIPS vs Treasuries at 5%, and XLF vs KRE after the Fed’s hike.

    This article is journalism, not investment advice. Do your own research before investing.

    Sources

  • Fed Rate Hike Bond ETFs: What 25 Basis Points Costs You

    A 25 basis point Fed rate hike would knock roughly $375 off a $10,000 TLT position, against about $3 in SGOV. That spread — not the expense ratio — is what decides outcomes for Fed rate hike bond ETFs. CME FedWatch put September odds near 66% on August 31, 2026, after the 10-year Treasury yield reached 4.80% on September 1, a 19-month high.

    The Federal Open Market Committee meets September 15–16, 2026. For the first time in this cycle, the market is pricing a hike rather than a cut.

    Bond ETF investors have spent two years being told fees are the thing to watch. In a repricing week, fees are noise. Duration is the signal.

    What does a Fed rate hike do to bond ETFs?

    A rate hike pushes yields up, and bond prices move inversely to yields. How far a fund falls is set almost entirely by its effective duration. Multiply duration by the yield change and you get the approximate percentage price move. A fund with 15 years of duration moves roughly eight times as much as one with 1.78 years.

    The setup is unusual. The July 28–29 FOMC minutes, published by the Federal Reserve, show the Committee held the target range at 3-1/2 to 3-3/4 percent on a 9–3 vote.

    Three policymakers dissented in favor of tightening. The minutes state plainly: “Several participants favored an increase of 25 basis points in the target range at this meeting.”

    Markets caught up fast. Tech Times reported that CME FedWatch showed roughly 65–68% odds of a September hike at the open on September 1, 2026, up from about 36% before Fed Chair Kevin Warsh spoke at Jackson Hole on August 28.

    Duration is the number that matters

    Effective duration estimates a fund’s price sensitivity to a parallel 1% shift in yields. It is published by every issuer and updated daily.

    It is an estimate, not a promise. Yield curves rarely shift in parallel, and a hike at the front end can leave the long end untouched — or push it the other way.

    Which bond ETF carries the most rate risk right now?

    TLT, by a wide margin. The iShares fund page lists effective duration of 15.01 years as of August 31, 2026, against 0.12 years for SGOV. Every other major Treasury and aggregate fund sits between them. Yield to maturity rises with duration, which is the compensation investors receive for accepting that risk.

    ETFExpense ratioEffective durationAvg. yield to maturityNet assets
    SGOV (0–3 mo. T-bills)0.09%0.12 yrs3.76%$106.0B
    SHY (1–3 yr Treasuries)0.15%1.78 yrs4.33%$25.9B
    AGG (US aggregate)0.03%5.73 yrs4.98%$138.3B
    IEF (7–10 yr Treasuries)0.15%6.94 yrs4.69%$41.8B
    TLT (20+ yr Treasuries)0.15%15.01 yrs5.29%$47.0B
    Source: iShares fund pages, figures as of August 28–31, 2026.

    Note the yield ranking. AGG’s 4.98% yield to maturity beats IEF’s 4.69% with more than a year less duration, because AGG holds corporate and mortgage credit alongside Treasuries.

    How much does 25 basis points cost on $10,000?

    Mechanically: price impact equals duration multiplied by the yield change. On a 25 basis point rise, that is duration × 0.25%. This is a sensitivity estimate, not a forecast — it says what happens if yields move, not that they will.

    Run the arithmetic on a $10,000 position, using the durations from the iShares pages above:

    • TLT: 15.01 × 0.25% = 3.75% → −$375
    • IEF: 6.94 × 0.25% = 1.74% → −$174
    • AGG: 5.73 × 0.25% = 1.43% → −$143
    • SHY: 1.78 × 0.25% = 0.45% → −$45
    • SGOV: 0.12 × 0.25% = 0.03% → −$3

    Now compare that to the annual fee on the same $10,000. TLT’s 0.15% ratio costs $15 a year. AGG’s 0.03% costs $3.

    The entire twelve-month fee difference between the cheapest and priciest fund on this list is $12. A single 25 basis point move in TLT is 31 times that.

    That is the whole argument. Fee screening is a rounding error next to a duration decision, and the industry’s fee-war marketing quietly inverts the priority.

    Is TLT or VGLT cheaper to hold for long Treasuries?

    VGLT is cheaper on fees by a factor of five. Vanguard’s long-term Treasury ETF charges 0.03% against TLT’s 0.15%, per the issuers’ published expense ratios. On $10,000 that is $3 a year versus $15. Both track long-dated US Treasuries with no credit risk, so the fee gap is close to free money.

    The catch is liquidity and size. TLT held $47.0 billion as of August 31, 2026, per iShares; VGLT held $10.6 billion, according to StockAnalysis data as of the same date.

    TLT is also the options and institutional hedging vehicle, which keeps its spreads tight. For a buy-and-hold investor, that advantage is worth less than 12 basis points a year.

    Here is the skeptical read: $47 billion sits in the more expensive wrapper for exposure available at one-fifth the cost. Habit and ticker recognition are expensive.

    Why are investors buying long bonds into a selloff?

    Because a higher yield to maturity looks like a bargain, and because falling prices attract dip buyers regardless of the macro setup. Flows have been going into the most rate-sensitive fund on the board precisely as hike odds doubled — a contrarian bet placed with maximum duration.

    Bloomberg reporting carried by Yahoo Finance on August 17, 2026 showed TLT taking in $5.3 billion in the week ended August 14 — an 11.71% jump in assets in five sessions.

    IEF went the other way in the same week, shedding $4.0 billion. Investors were not leaving bonds. They were moving out along the curve.

    It has not worked out yet. TLT closed at $81.87 on September 1, 2026, per StockAnalysis, with a one-year total return of −1.13% including distributions.

    What the curve actually looks like

    The Fed’s H.15 release dated August 31, 2026 lists constant-maturity yields for August 28: 3.90% at three months, 4.34% at two years, 4.73% at ten years, and 5.22% at thirty.

    By September 1 the ten-year had reached 4.80% and the two-year 4.41%, according to Trading Economics — the highest ten-year level since January 2025.

    That is a steepening curve, not a flat one. The long end is repricing on inflation and term premium, not only on the funds rate.

    What does duration not tell you?

    Duration assumes a parallel shift and small moves. Real markets deliver neither. Five things the number leaves out, each of which can matter more than the hike itself in any given month:

    1. Curve shape. A front-end hike can steepen or flatten the curve; TLT responds to the 20-to-30-year sector, not the funds rate.
    2. Convexity. For large moves, duration overstates losses and understates gains.
    3. Coupon income. TLT’s 5.29% yield to maturity accrues while you wait, offsetting price moves over time.
    4. Term premium. Supply and fiscal risk push long yields independently of policy.
    5. What is priced in. At 66% odds, a hike is largely in the market already; the surprise is what moves prices.

    Which bond ETF fits which investor goal?

    Match duration to when you need the money, not to the yield you want. The table below pairs a stated goal with the exposure whose rate risk fits it, the annual fee on $10,000, and the mechanical hit from a 25 basis point rise using the durations published above.

    If your goal is…Duration that matchesFee per $10,000/yrEst. hit per 25 bpThe trade-off
    Cash needed inside 12 monthsSGOV — 0.12 yrs$9−$3Lowest yield to maturity of the group at 3.76%
    Ballast without a rate betSHY — 1.78 yrs$15−$45Costs 5x AGG for less yield
    One-fund core bond sleeveAGG — 5.73 yrs$3−$143Holds credit, so not a pure Treasury hedge
    Pure intermediate TreasuriesIEF — 6.94 yrs$15−$174Yields less than AGG for more duration
    Maximum sensitivity to rate movesTLT — 15.01 yrs$15−$375Cuts both ways; VGLT gives similar exposure for $3
    Fees and durations from iShares, Vanguard and StockAnalysis, August 28–September 1, 2026. Price impacts are duration-based estimates, not forecasts.

    Frequently asked questions

    Do bond ETFs fall when the Fed raises rates?

    Not automatically. They fall when market yields rise. If a hike is already priced — FedWatch showed roughly 66% odds on August 31, 2026 — much of the move has happened before the announcement.

    Where do I find a fund’s duration?

    On the issuer’s product page, listed as “effective duration” with a date stamp. iShares, Vanguard and State Street all publish it daily. Never use a third-party figure without checking the as-of date.

    Is SGOV really immune to rate hikes?

    Close to it on price. At 0.12 years of duration, a 25 basis point move is about 3 basis points of price. Its income, however, resets with T-bill rates within weeks in either direction.

    Why does TLT yield more than SGOV?

    The curve is upward sloping. As of the Fed’s August 28 H.15 data, three-month bills yielded 3.90% and thirty-year bonds 5.22%. TLT’s 5.29% yield to maturity is payment for holding 15 years of duration.

    What is the difference between duration and maturity?

    Maturity is when the principal returns. Duration is a weighted measure of when all cash flows arrive, and it is what determines price sensitivity. TLT holds bonds maturing in 20-plus years but has 15.01 years of duration because coupons arrive sooner.

    When is the next Fed decision?

    The FOMC meets September 15–16, 2026, with the statement due the afternoon of September 16. The current target range is 3.50%–3.75%, held there at the July 28–29 meeting on a 9–3 vote.

    Does a longer holding period cancel out duration risk?

    Partly. Over a horizon near a fund’s duration, higher reinvested coupon income roughly offsets the initial price loss. That is arithmetic, not a guarantee, and it only holds if you do not sell into the drawdown.

    The bottom line

    On the measurable question — which fund is most exposed to the September 16 decision — the answer is TLT, and it is not close. Fifteen years of duration against SGOV’s 0.12 is a 125-fold difference in rate sensitivity.

    On cost, VGLT wins the long-Treasury comparison outright: same government-only exposure, 0.03% versus 0.15%, $12 a year saved per $10,000. The only reason to pay TLT’s premium is if you trade its options or need institutional-scale liquidity.

    And the framing most retail screens use is backwards. It depends on your holding period and your need for the money on a specific date — not on which fund shaved a basis point off its fee last quarter.

    With the ten-year at 4.80% on September 1, 2026 and hike odds near two-thirds, the duration number on your fund page is the only figure worth checking before the sixteenth.

    Related reading on Wealth Engine: SPY vs VOO vs IVV: which S&P 500 ETF is cheapest in 2026 and DeFi yield vs Treasury bills.

    This article is journalism, not investment advice. Do your own research before investing.

    Sources