ARB — AltShares Merger Arbitrage ETF
Data updated: 2026-08-12
ARB — AltShares Merger Arbitrage ETF. United States Small Cap Blend / Core Equity · $103.08M AUM. Holdings, fees, performance and SEC filings.
ARB Fund Overview
ARB — AltShares Merger Arbitrage ETF is a US ETF managed by Altshares Trust, categorised as United States Small Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Altshares Trust
- Category: United States Small Cap Blend / Core Equity
- Assets under management: $103.08M
- 1-year return: 4.8%
- Ticker: ARB
- SEC CIK: 0001779306
- SEC series ID: S000067196
- Share class ID: C000216184
ARB Holdings
Top 10 holdings of AltShares Merger Arbitrage ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Morgan Stanley Prime Broker US | 15.53% |
| Warner Bros Discovery Inc | 3.59% |
| State Street Global Advisors | 2.99% |
| Morgan Stanley & Co. LLC | 2.99% |
| Electronic Arts Inc | 2.80% |
| Clearwater Analytics Holdings Inc | 2.79% |
| AES Corp/The | 2.78% |
| Masimo Corp | 2.77% |
| Chart Industries Inc | 2.72% |
| Penumbra Inc | 2.71% |
ARB Portfolio Allocation
Asset-class allocation of AltShares Merger Arbitrage ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 92.9% |
| Other | 15.5% |
| Cash & Equivalents | 6.8% |
ARB Performance
Total returns for ARB (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.9% |
| 1 year | 4.8% |
| 3 years (annualised) | 6.4% |
| 5 years (annualised) | 3.9% |
ARB Risk Information
Risk metrics for ARB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 1.0%
ARB Costs and Fees
ARB costs about $76 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.76%
- Gross expense ratio: 0.76%
- Portfolio turnover: 431%
- Brokerage commissions: 55.87 bps of average net assets (SEC N-CEN)
ARB Cashflows
Over the 12 months to 2026-05, AltShares Merger Arbitrage ETF had net inflows of $12.40M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-05 | $3.25M |
| 2026-04 | −$5.90M |
| 2026-03 | $1.17M |
| 2026-02 | $0 |
| 2026-01 | $2.03M |
| 2025-12 | $2.60M |
ARB Debt Constituents
No individual debt constituents are reported in AltShares Merger Arbitrage ETF's latest SEC N-PORT filing.
ARB Prospectus and SEC Filings
Official AltShares Merger Arbitrage ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-09-26
- Prospectus (485BPOS) — filed 2024-09-27
- Prospectus (485BPOS) — filed 2023-09-28
- Portfolio holdings (N-PORT) — filed 2026-07-07
- Portfolio holdings (N-PORT) — filed 2026-04-28
- Portfolio holdings (N-PORT) — filed 2026-01-05
- Annual census (N-CEN) — filed 2026-08-12
- Annual census (N-CEN) — filed 2025-08-14
Related Funds
Other United States Small Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.