v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 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 Jun. 30, 2026
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Applied Finance Valuation Large Cap ETF  
Shareholder Report [Line Items]  
Fund Name Applied Finance Valuation Large Cap ETF
Class Name Applied Finance Valuation Large Cap ETF
Trading Symbol VSLU
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Applied Finance Valuation Large Cap ETF for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information at www.appliedfinancefunds.com/ETF/InvestorResources or (833) 356-0909.
Additional Information Phone Number (833) 356-0909
Additional Information Website www.appliedfinancefunds.com/ETF/InvestorResources
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
Applied Finance Valuation Large Cap ETF
$25
0.49%¹
¹Annualized.
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.49% [1]
Net Assets $ 545,756,586
Holdings Count | Holdings 460
Advisory Fees Paid, Amount $ 1,120,525
Investment Company, Portfolio Turnover 20.63%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2026)

Fund Net Assets
$545,756,586
Number of Holdings
460
Total Net Advisory Fee
$1,120,525
Portfolio Turnover Rate
20.63%
Holdings [Text Block]

What did the Fund invest in?

(% of Net Assets as of June 30, 2026)

Sector Breakdown

sector
%
Communication Services
0.1277
Consumer Discretionary
0.108
Consumer Staples
0.0428
Energy
0.0188
Financials
0.0936
Health Care
0.1246
Industrials
0.0836
Information Technology - Hardware
0.2715
Information Technology - Software & Services
0.0899
Materials
0.0117
Real Estate
0.008
Utilities
0.0108
bar
Largest Holdings [Text Block]
Top 10 Holdings
Nvidia Corp.
10.18%
Apple, Inc.
9.33%
Alphabet, Inc. Class A
7.47%
Microsoft Corp.
6.14%
Meta Platforms, Inc.
3.86%
Eli Lilly & Co.
3.69%
Visa, Inc. Class A
2.98%
Broadcom, Inc.
2.86%
Mastercard, Inc. Class A
2.15%
Booking Holdings, Inc.
1.27%
Applied Finance IVS US SMID ETF  
Shareholder Report [Line Items]  
Fund Name Applied Finance IVS US SMID ETF
Class Name Applied Finance IVS US SMID ETF
Trading Symbol IVSS
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Applied Finance IVS US SMID ETF for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information at www.appliedfinancefunds.com/ETF/InvestorResources or (833) 356-0909.
Additional Information Phone Number (833) 356-0909
Additional Information Website www.appliedfinancefunds.com/ETF/InvestorResources
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
Applied Finance IVS US SMID ETF
$32
0.59%¹
¹Annualized.
Expenses Paid, Amount $ 32 [2]
Expense Ratio, Percent 0.59% [2]
Net Assets $ 26,906,439
Holdings Count | Holdings 362
Advisory Fees Paid, Amount $ 53,058
Investment Company, Portfolio Turnover 52.32%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2026)

Fund Net Assets
$26,906,439
Number of Holdings
362
Total Net Advisory Fee
$53,058
Portfolio Turnover Rate
52.32%
Holdings [Text Block]

What did the Fund invest in?

(% of Net Assets as of June 30, 2026)

Sector Breakdown

sector
%
Communication Services
0.0346
Consumer Discretionary
0.1184
Consumer Staples
0.025
Energy
0.069
Financials
0.1711
Health Care
0.1489
Industrials
0.1872
Information Technology
0.1317
Materials
0.0424
Real Estate
0.0377
Utilities
0.0241
bar
Largest Holdings [Text Block]
Top 10 Holdings
Sterling Infrastructure, Inc.
2.87%
Sezzle, Inc.
2.09%
Dave, Inc.
1.87%
BrightSpring Health Services, Inc.
1.64%
Nextpower, Inc.
1.63%
HealthEquity, Inc.
1.50%
InterDigital, Inc.
1.50%
PJT Partners, Inc.
1.41%
Mercury General Corp.
1.31%
Lantheus Holdings, Inc.
1.25%
Applied Finance IVS International Large ETF  
Shareholder Report [Line Items]  
Fund Name Applied Finance IVS International Large ETF
Class Name Applied Finance IVS International Large ETF
Trading Symbol IVSI
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Applied Finance IVS International Large ETF for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information at www.appliedfinancefunds.com/ETF/InvestorResources or (833) 356-0909.
Additional Information Phone Number (833) 356-0909
Additional Information Website www.appliedfinancefunds.com/ETF/InvestorResources
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
Applied Finance IVS International Large ETF
$34
0.65%¹
¹Annualized.
Expenses Paid, Amount $ 34 [3]
Expense Ratio, Percent 0.65% [3]
Net Assets $ 7,910,771
Holdings Count | Holdings 193
Advisory Fees Paid, Amount $ 23,318
Investment Company, Portfolio Turnover 20.53%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2026)

Fund Net Assets
$7,910,771
Number of Holdings
193
Total Net Advisory Fee
$23,318
Portfolio Turnover Rate
20.53%
Holdings [Text Block]

What did the Fund invest in?

(% of Net Assets as of June 30, 2026)

Sector Breakdown

sector
%
Financials
0.2171
Industrials
0.1657
Health Care
0.1381
Information Technology
0.1313
Consumer Discretionary
0.1129
Consumer Staples
0.0781
Materials
0.0618
Communication Services
0.0481
Energy
0.0197
Utilities
0.014
Real Estate
0.0011
bar
Largest Holdings [Text Block]
Top 10 Holdings
ASML Holding NV
6.84%
Roche Holding AG
3.36%
BHP Group Ltd.
2.69%
Novartis AG
2.31%
Novo Nordisk A/S
2.16%
Investor AB
2.05%
AstraZeneca plc
1.93%
British American Tobacco plc
1.87%
Deutsche Telekom AG
1.81%
Allianz SE
1.78%
Applied Finance IVS International SMID ETF  
Shareholder Report [Line Items]  
Fund Name Applied Finance IVS International SMID ETF
Class Name Applied Finance IVS International SMID ETF
Trading Symbol IVSX
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Applied Finance IVS International SMID ETF for the period of February 20, 2026(inception) to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information at www.appliedfinancefunds.com/ETF/InvestorResources or (833) 356-0909.
Additional Information Phone Number (833) 356-0909
Additional Information Website www.appliedfinancefunds.com/ETF/InvestorResources
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
Applied Finance IVS International SMID ETF
$26¹
0.75%²
¹Costs are for the period of February 20, 2026 to June 30, 2026. Costs for a full semi-annual period would be higher.
²Annualized.
Expenses Paid, Amount $ 26 [4]
Expense Ratio, Percent 0.75% [5]
Net Assets $ 4,588,603
Holdings Count | Holdings 249
Advisory Fees Paid, Amount $ 10,697
Investment Company, Portfolio Turnover 28.31%
Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2026)

Fund Net Assets
$4,588,603
Number of Holdings
249
Total Net Advisory Fee
$10,697
Portfolio Turnover Rate
28.31%
Holdings [Text Block]

What did the Fund invest in?

(% of Net Assets as of June 30, 2026)

Sector Breakdown

sector
%
Industrials
0.2605
Consumer Discretionary
0.1481
Materials
0.1118
Financials
0.1106
Information Technology
0.103
Real Estate
0.0647
Health Care
0.0490
Consumer Staples
0.0361
Communication Services
0.0356
Energy
0.0341
Utilities
0.0286
bar
Largest Holdings [Text Block]
Top 10 Holdings
Relo Group, Inc.
2.13%
Swissquote Group Holding SA
2.09%
Italgas S.p.A.
1.86%
Leopalace21 Corp.
1.78%
Temenos Group AG
1.78%
U.S. Bank Money Market Deposit Account
1.57%
Air France-KLM
1.40%
IONOS Group SE
1.40%
Lottomatica Group S.p.A.
1.31%
Diploma plc
1.28%
[1] Annualized.
[2] Annualized.
[3] Annualized.
[4] Costs are for the period of February 20, 2026 to June 30, 2026. Costs for a full semi-annual period would be higher.
[5] Annualized.