v3.26.3
Shareholder Report
 6 Months Ended
Jul. 31, 2026
USD ($)
Holdings
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name ETF Opportunities Trust
Entity Central Index Key 0001771146
Entity Investment Company Type N-1A
Document Period End Date Jul. 31, 2026
Shareholder Report Annual or Semi-Annual semi annual shareholder report
REX-Osprey(TM) DOGE ETF  
Shareholder Report [Line Items]  
Fund Name REX-OSPREY™ DOGE ETF
Class Name REX-OSPREY™ DOGE ETF
Trading Symbol DOJE
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi annual shareholder report contains important information about the REX-OSPREY™ DOGE ETF for the period of February 1, 2026 to July 31, 2026.
Shareholder Report Annual or Semi-Annual semi annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.rexshares.com/doje/. You can also contact us at (844) 802-4004.
Additional Information Phone Number (844) 802-4004
Additional Information Website www.rexshares.com/doje/
Expenses [Text Block]

What were the Fund costs for the period?

(based on a hypothetical $10,000 investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
REX-OSPREY™ DOGE ETF
$75
1.85%¹'²
¹Annualized.
²Gross expenses, excluding interest expense, would have been 1.50% for the six months ended July 31, 2026.
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.85% [1],[2]
Net Assets $ 12,107,946
Holdings Count | Holdings 4
Advisory Fees Paid, Amount $ 116,346
Investment Company, Portfolio Turnover 10.32%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of July 31, 2026)

Fund Net Assets
$12,107,946
Number of Holdings
4
Total Net Advisory Fee
$116,346
Portfolio Turnover Rate
10.32%
Holdings [Text Block]

Sector Breakdown

sector
%
Crypto Currencies
0.5875
Exchange Traded Products
0.394
Money Market Fund
0.0022
Repurchase Agreement
-1.6737
bar
Largest Holdings [Text Block]
Top Holdings
Dogecoin
58.75%
21Shares Dogecoin ETP
39.40%
First American Government Obligations Fund
- Class X 3.583%
0.22%
Marex Repurchase Agreement 4.215% 8/5/26
-167.37%
REX-Osprey(TM) SOL + Staking ETF  
Shareholder Report [Line Items]  
Fund Name REX-OSPREY™ SOL + STAKING ETF
Class Name REX-OSPREY™ SOL + STAKING ETF
Trading Symbol SSK
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi annual shareholder report contains important information about the REX-OSPREY™ SOL + STAKING ETF for the period of February 1, 2026 to July 31, 2026.
Shareholder Report Annual or Semi-Annual semi annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.rexshares.com/ssk/. You can also contact us at (844) 802-4004.
Additional Information Phone Number (844) 802-4004
Additional Information Website www.rexshares.com/ssk/
Expenses [Text Block]

What were the Fund costs for the period?

(based on a hypothetical $10,000 investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
REX-OSPREY™ SOL + STAKING ETF
$45
1.06%¹'²
¹Annualized.
²Gross expenses, excluding interest expense, would have been 0.75% for the six months ended July 31, 2026.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 1.06% [3],[4]
Net Assets $ 69,358,065
Holdings Count | Holdings 5
Advisory Fees Paid, Amount $ 301,376
Investment Company, Portfolio Turnover 6.73%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of July 31, 2026)

Fund Net Assets
$69,358,065
Number of Holdings
5
Total Net Advisory Fee
$301,376
Portfolio Turnover Rate
6.73%
Holdings [Text Block]

Sector Breakdown

sector
%
Crypto Currencies
0.5504
Exchange Traded Products
0.4315
Money Market Fund
0.0027
Repurchase Agreement
-1.5107
bar
Largest Holdings [Text Block]
Top Holdings
Solana
51.43%
CoinShares Physical Staked Solana
43.15%
JitoSOL (Liquid Staking Token on Solana)
3.62%
First American Government Obligations Fund
- Class X 3.583%
0.27%
Marex Repurchase Agreement 4.215% 8/5/26
-151.07%
[1] Annualized.
[2] Gross expenses, excluding interest expense, would have been 1.50% for the six months ended July 31, 2026.
[3] Annualized.
[4] Gross expenses, excluding interest expense, would have been 0.75% for the six months ended July 31, 2026.