# ARB (AltShares Merger Arbitrage ETF)

AltShares · Alternatives ETFs · data as of Sep 18, 2026

In the S&P 500’s down weeks over the year to Sep 18, 2026, ARB rose 0.05% a week on average.

## Key facts

- ARB, correlation with the S&P 500: +0.04, as of Sep 18, 2026.
- ARB, beta to the S&P 500: +0.01, as of Sep 18, 2026.
- ARB, down-week capture: −4.0%, as of Sep 18, 2026.
- ARB, against T-bills, 52 weeks: −0.6 pts, as of Sep 18, 2026.
- ARB, net assets: $103m (SEC N-PORT, whole fund, as filed for May 31, 2026).
- ARB, expense ratio: 0.76% (485BPOS XBRL, Sep 26, 2025).

## ARB over each window to Sep 18, 2026

| Window | The fund | S&P 500 | Difference, percentage points |
| --- | --- | --- | --- |
| 3 months | +0.7% | +2.3% | −1.6 pts |
| 6 months | +1.7% | +18.0% | −16.3 pts |
| 1 year | +3.1% | +16.6% | −13.5 pts |
| 3 years | +15.5% | +78.4% | −62.9 pts |
| Since it listed | +29.1% | +189.6% | −160.5 pts |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Issuer | AltShares | ETFIQ |
| Strategy | Event driven | ETFIQ, from its prospectus |
| Expense ratio | 0.76% | 485BPOS XBRL, Sep 26, 2025 |
| Net assets | $103m | SEC N-PORT, whole fund, as filed for May 31, 2026 |
| Weeks measured | 52, from Sep 19, 2025 to Sep 18, 2026 | ETFIQ |
| Weeks the S&P 500 fell | 22 | ETFIQ |
| The S&P 500 in those weeks, on average | −1.24% | ETFIQ |
| ARB in those weeks, on average | +0.05% | ETFIQ |
| ARB total return over those weeks | +3.0% | ETFIQ |
| T-bills | +3.6% | ETFIQ |
| Listed since | May 7, 2020 | ETFIQ |
| Days traded | 90 | ETFIQ |
| Quoted | on an exchange, every trading day | ETFIQ |

## Questions

### Does ARB move with the S&P 500?

Over the year to Sep 18, 2026, ARB’s weekly returns had a correlation of +0.04 with the S&P 500’s, on a scale where 1 moves in step, 0 shows no pattern and −1 moves opposite. Its beta was +0.01, so for each 1% the index moved it moved about 0.01% the same way.

### What did ARB do when stocks fell?

The S&P 500 fell in 22 of the 52 weeks to Sep 18, 2026, by 1.24% on average. In those weeks ARB rose 0.05% on average, a down-week capture of −4.0%.

### Did ARB earn more than cash?

Over the same 52 weeks ARB returned +3.0% with distributions reinvested, and BIL, a fund of Treasury bills, returned +3.6%. ARB finished 0.6 percentage points behind it.

### What does ARB cost?

The prospectus expense ratio is 0.76% a year.

### Why is ARB listed as event driven?

ETFIQ files each fund by what its own prospectus says it does, and ARB’s, filed Sep 26, 2025, describes an event driven fund.


## Cite this page

ETFIQ, ARB, data as of Sep 18, 2026. https://etfiq.com/funds/arb
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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