Leveraged and Inverse ETFs: TQQQ and SQQQ Decay Mechanics

Leveraged ETFs (TQQQ 3x long Nasdaq-100, SQQQ 3x inverse) reset daily. They deliver 3x the daily return of the index, not 3x the multi-day return. Over holding periods longer than a day, volatility decay and path dependence cause the ETF's return to diverge — usually negatively — from 3x the index's return.

The decay math

Leveraged returns compound, and compounding is path-dependent. Consider the index dropping 10% then rising 11.1% (back to even):

• Index: 100 → 90 → 100 (0% net)
• TQQQ (3x daily): 100 → 70 → 93.1 (-6.9% net)

The index is flat; TQQQ lost 6.9%. The up move needed 11.1% to recover the 10% drop, but TQQQ only got 3 × 11.1% = 33.3% off a base of 70, reaching 93.1. This gap is volatility decay (also called beta slippage). It grows with volatility and holding period.

When decay helps (rare)

In a low-volatility trend, daily compounding works in favor of the leveraged ETF. If the index rises 1% every day for 10 days (no down days):

• Index: 100 → 110.5 (+10.5%)
• TQQQ: 100 → 134.4 (+34.4%, more than 3x)

Smooth trends amplify. Choppy or mean-reverting paths decay. Decay is symmetric in spirit — inverse ETFs decay the same way on choppy paths.

SQQQ specifically

SQQQ is the 3x inverse. In a sustained Nasdaq bull market, SQQQ decays toward zero irreversibly. Even in a flat market, SQQQ loses value daily through decay. It is a short-term hedge or tactical short, not a buy-and-hold.

Practical rules

• Hold leveraged/inverse ETFs intraday or for 1–3 days max, unless you are explicitly betting on a low-vol trend continuation.
• Never use them as long-term holdings. A 3x ETF that decays 1–2% per month in a choppy market loses 25–40% over a year even if the index is flat.
• For directional exposure beyond a day, use options or margin instead. A 3x notional position via margin on QQQ does not decay — it tracks the index exactly. The leveraged ETF's decay is the price of its daily-reset structure.
• Rebalance if holding multi-day. If you must hold TQQQ for a swing, rebalance back to target notional every 2–3 days to limit path distortion.

The honest framing

TQQQ and SQQQ are precision instruments for short, high-conviction directional bets with defined risk windows. Used as buy-and-hold leveraged exposure, they systematically underperform 3x the index in real markets because real markets are choppy. Read the prospectus's own warning: these funds are designed for daily use. The decay is not a bug — it is the documented mechanic.