SPXU vs ZMUN
ProShares UltraPro Short S&P 500 against The RBB Fund, Inc. F/m Ultrashort Tax-Free Municipal ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
0%
0 shared positions
Fee gap
59 bp
ZMUN is cheaper
1-year return gap
33.9 pts
ZMUN is ahead
Larger fund
SPXU
$452M
Side by side
| SPXU | ZMUN | |
|---|---|---|
| Fund | ProShares UltraPro Short S&P 500 | The RBB Fund, Inc. F/m Ultrashort Tax-Free Municipal ETF |
| Issuer | ProShares | The RBB |
| Category | Inverse Equity | Inverse Equity |
| Expense ratio | 0.89% | 0.30% |
| Assets | $452M | $27M |
| Average daily dollar volume | $300M | $271K |
| Listed | Jun 23, 2009 | Sep 29, 2025 |
| FrenzyCap score | 76 | 48 |
| 1-month return | +2.3% | +0.3% |
| 3-month return | −9.6% | −0.4% |
| Year to date | −30.0% | −0.3% |
| 1-year return | −34.3% | −0.4% |
| 30-day volatility | 31.0% | 2.4% |
| Worst drawdown, 1 year | −47.3% | −1.8% |
| Trailing 12-month yield | 6.26% | 3.59% |
| Holdings | 18 | 158 |
| Top 10 weight | 49.6% | 24.2% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$126M thru May 2026 | +$16M thru May 2026 |
| 30-day implied volatility | 46.4% | — |
| Holdings as of | as of Oct 22, 2026issuer data | as of May 31, 2026SEC filing |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
0% of SPXU · 0% of ZMUNNo holdings in common.
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · SPXU holdings · ZMUN holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.