Direxion Daily 20-Yr Treasury Bull 3x Shares (TMF)
The Direxion Daily 20-Yr Treasury Bull 3x Shares (ticker TMF) is a bet on falling interest rates, amplified three times over — a tactical trading instrument designed to track three times the daily gains or losses of 20-year US Treasury bonds, reset each day at the market close.
The mechanism: leverage, resets, and decay
TMF holds 20-year Treasury futures and uses borrowed money to amplify returns. On a day when long-term Treasuries rise one percent, TMF aims to gain roughly three percent. On a day they fall one percent, TMF falls roughly three percent. The amplification is reset to 3x every single day at the close. This daily reset is the hidden hinge.
When you hold TMF for months or years, the daily resets compound in a way that destroys value if the underlying bond price is choppy. Suppose Treasuries stay flat on average but bounce around week to week. Even though the underlying asset went nowhere, the daily resetting of leverage causes TMF to leak money over time through a process called volatility decay. The steeper the swings, the faster the decay. Over long periods, even when the direction is right, you can lose money if the bond market is volatile.
Who buys this and why
TMF is not a buy-and-hold fund. It is a trading tool for people with a specific short-term view. A trader who thinks the Federal Reserve will cut rates sharply, or who sees a geopolitical shock heading toward safe-haven Treasury buying, might buy TMF for days or weeks to amplify that bet. Bond traders use it to juice profits when they are right about direction. Hedge funds and active money managers sometimes use leveraged Treasury ETFs to position for macro moves without deploying the capital and complexity of futures contracts.
The cost of leverage is baked in. You pay for the borrowed money and for the derivatives used to construct the leverage. Those costs show up as an expense ratio (modest by itself) but also as drag from rolling futures contracts and the frictions of daily rebalancing. Holding TMF for a month or a year against a quiet market can be very expensive.
Interest-rate risk and leverage risk
TMF is a pure bet on bond prices, which move opposite to interest rates. If rates rise, Treasury prices fall, and TMF falls three times as hard. In the 2022 rate-hiking cycle, TMF fell sharply alongside the broader bond market. The leverage amplified the pain. A trader or investor who bought at the wrong time and held through a surprising rate rise can face substantial losses.
Beyond the interest-rate direction, leverage itself is a risk. Because TMF uses borrowed money, losses can exceed the initial investment if things move far enough. You can lose more than one hundred percent of your capital, though that is rare in a fund this liquid. The rebalancing costs and the daily reset mechanism also mean that even if you are right about direction over a year, TMF might underperform a simpler, unleveraged 20-year Treasury ETF because of volatility decay.
The illusion of simplicity is perhaps the biggest risk. TMF looks like a normal ETF — you buy shares, you get a daily reset — but it is nothing like a passive index product. It is an active, synthetic instrument. The casual investor who buys TMF thinking it is a long-term Treasury bond position tends to be surprised and disappointed.
Costs and trading
The expense ratio is low in absolute terms — perhaps fifteen to twenty-five basis points annually — but the true cost is much higher when you account for the daily derivatives rebalancing, the bid-ask spreads (wider than a simple Treasury ETF), and the opportunity cost of holding a decaying position if you are not frequently in and out.
TMF trades actively and with reasonable liquidity during market hours. The bid-ask spread is usually tight for a leveraged fund, and shares can be bought and sold easily. It pays no distributions — the daily rebalancing activity generates no income.
How to research TMF
Read Direxion’s prospectus and fact sheet. The prospectus explains the daily reset mechanism, the volatility-decay risk, and the leverage mechanics in detail. Look at historical performance over one-day, one-week, and one-year periods. You will notice that the one-year return often looks nothing like what you would expect from simply multiplying the three-year Treasury index return by three. That gap is volatility decay.
Watch the fund’s holdings — it is entirely derivatives and Treasury futures, not actual bonds. That matters for tax treatment and marks the instrument as synthetic. If you are considering using TMF, read at least one detailed article or tutorial on leverage decay in ETFs. The math is simple but unintuitive, and many first-time users of leveraged funds lose money not because their directional call was wrong, but because they misjudged the time horizon and the volatility environment. TMF is a short-term trading tool. Use it that way, or avoid it.