ProShares UltraShort QQQ (QID) vs SQQQ: How Much Leverage?

A 2% drop in the Nasdaq-100 is worth about $400 on $10,000 of QID. The same drop pays about $600 on $10,000 of SQQQ. Reverse the day and those are your losses. That single-day trade-off is easy to read straight off the multiple, and the harder part is what happens across a string of sessions, because each fund resets its leverage every evening and the extra multiple in SQQQ makes the gap between “three times the opposite of the index” and what you actually end up holding grow faster than it does in QID whenever the index swings back and forth.

What are QID, SQQQ and PSQ?

They are ProShares funds on one benchmark, the Nasdaq-100 Index, and each targets a different multiple of the index’s move for one day at a time, with the names, objectives and inception dates below taken from the ProShares fund pages as of October 2026.

Ticker	Fund	Daily objective	Inception (per ProShares)
PSQ	ProShares Short QQQ	-1x the Nasdaq-100	June 19, 2006
QID	ProShares UltraShort QQQ	-2x the Nasdaq-100	July 11, 2006
SQQQ	ProShares UltraPro Short QQQ	-3x the Nasdaq-100	February 9, 2010

The funds hold no short positions in Nasdaq stocks. ProShares lists index swaps with banks, Nasdaq-100 E-mini futures and Treasury bills. The swaps and futures create the short exposure; the bills hold the cash. Each swap is a contract with a bank, so every one of these funds depends on its banks paying what they owe, a counterparty risk that comes with QID, SQQQ and PSQ alike.

How far apart are they on one day?

On a single day the multiple does what it says, before fees.

Plan around the last line. A sharp rally is the bad day for every inverse fund, so size the position from the dollar loss you could stand on one and let that figure decide how many shares you buy.

Leverage also changes how much cash a given bet ties up. $30,000 in PSQ, $15,000 in QID and $10,000 in SQQQ each carry $30,000 of short exposure for one session. The daily dollar swing is the same in all of them. What the smaller check buys is spare cash, and what it costs is extra drift on any hold longer than a day, since the higher multiple compounds each day’s move harder.

What happens over several days?

Every evening the fund resets to its full multiple against the new close. Over two sessions or more, the path decides the result.

Start with a choppy path: the index rises 5% and then falls 5%.

The index slipped a quarter of a percent. Someone expecting each fund to post its multiple of the opposite would look for gains of 0.25%, 0.50% and 0.75%. All of them lost. Measured against those figures the shortfall was 0.5 point at -1x, 1.5 points at -2x and 3 points at -3x, which means tripling the multiple made the shortfall six times larger on a path where the index barely moved.

Now a trending path: the index falls 3% on two days in a row.

Both funds beat their multiple. Each day’s gain compounded on a bigger base. ProShares describes both effects on its fund pages. Big, one-way moves with low volatility tend to help a multi-day holder, and small moves with high volatility tend to hurt, and the effect grows the longer the hold runs while those conditions last. The leveraged ETF decay calculator runs any path you type in.

Who should pick which fund?

Pick by holding period first, then by how closely you can watch, then by the dollar loss on a bad day.

• SQQQ fits a trade measured in hours or a session or two. You watch it during market hours with an exit set in advance. You accept the widest daily swing for the most exposure per dollar.
• QID fits a hold of a few sessions. A hedge around a scheduled event is one example. Its drift builds more slowly, and it gives a stop more room in index terms.
• PSQ fits anyone who wants to stay short for weeks. Drift is smallest at -1x, though it never reaches zero.

Say you will exit after a 9% loss in the fund. On SQQQ that is about a 3% rally in the index. On QID the same 9% stop lets the index rise about 4.5% before you are out, half again as much room, so compare either stop with the index’s recent average true range, because a stop that sits inside the index’s normal daily range gets hit by noise.

Why does the index’s weighting matter for a bet against it?

According to Nasdaq’s methodology, the Nasdaq-100 measures 100 of the largest non-financial companies listed on Nasdaq and weights them by a modified market capitalization, a scheme that ties each company’s weight to the market value of its shares. Bigger companies carry more weight. They move the index most. Nasdaq rebalances quarterly partly to keep the weight of its largest members in check, yet the biggest names still drive much of any day’s move, and for anyone short the index that has consequences:

• A bet against the Nasdaq-100 is largely a bet against its biggest companies. If they rally on strong earnings while most other members slip, the index can still close higher, and QID and SQQQ lose.
• The reverse works too. A selloff confined to the largest names can lift QID on a day when most of the index rises.
• Earnings reports from the biggest members become event risk. A report that moves the index 2% moves SQQQ about 6%.
• Financial companies are left out. A selloff led by banks barely registers.

Before buying, open the index holdings table on the fund’s ProShares page and see which companies sit at the top and how much weight they carry. If you already own those names in an index fund or as single stocks, the Mag 7 case study works through how much of a portfolio a handful of large companies can become.

What should you check before buying either one?

The inverse ETF list sets the Nasdaq-100 funds beside the inverse funds on the S&P 500, the Dow, the Russell 2000 and Treasuries, each with its multiple. If your reason for buying QID is protection for stocks you already own, sizing it against those holdings is a separate job, and hedging a tech-heavy portfolio with QID walks through the steps.