COSW — Roundhill COST WeeklyPay ETF
Data updated: 2026-05-22
COSW — Roundhill COST WeeklyPay ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Large Cap Equity · $13.94M AUM · 0.99% expense ratio. From SEC regulatory filings.
COSW Fund Overview
COSW — Roundhill COST WeeklyPay ETF is a US ETF managed by Roundhill ETF Trust, categorised as United States Large Cap Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Roundhill ETF Trust
- Category: United States Large Cap Equity
- Assets under management: $13.94M
- Ticker: COSW
- SEC CIK: 0001976517
- SEC series ID: S000092337
- Share class ID: C000260275
COSW Holdings
Top 3 holdings of Roundhill COST WeeklyPay ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Treasury Bill | 71.41% |
| Costco Wholesale Corp | 10.94% |
| First American Government Obli | 7.53% |
COSW Portfolio Allocation
Asset-class allocation of Roundhill COST WeeklyPay ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 71.4% |
| Equity | 10.9% |
| Derivatives | 10.2% |
| Cash & Equivalents | 7.5% |
COSW Performance
Total returns for COSW (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 17.7% |
COSW Costs and Fees
COSW costs about $99 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.99%
- Gross expense ratio: 0.99%
- Portfolio turnover: 10%
- Brokerage commissions: 8.35 bps of average net assets (SEC N-CEN)
COSW Cashflows
Over the 12 months to 2026-03, Roundhill COST WeeklyPay ETF had net inflows of $13.10M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$470.97K |
| 2026-02 | −$4.80M |
| 2026-01 | −$9.32M |
| 2025-12 | $875.90K |
| 2025-11 | $25.35M |
| 2025-10 | $1.47M |
COSW Debt Constituents
Largest debt holdings of Roundhill COST WeeklyPay ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Treasury Bill | 71.41% |
COSW Prospectus and SEC Filings
Official Roundhill COST WeeklyPay ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Large Cap 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.