v3.26.1
Schedule of Statement of Operation by Segment (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Operating income:            
Unrealized loss on investment securities, net from the licensed broker dealer $ (1,835,000) [1]   $ (2,193,000)   $ (4,882,000) $ (3,656,000)
Related party unrealized loss on investment securities, net from the licensed broker dealer (29,000) [1]     (29,000) [1]
Realized gain on investment securities, net from the licensed broker dealer [1] 30,000       30,000  
Fee income (from our licensed broker dealer) 411,000 [2]     3,273,000 [2] 2,140,000 [3]
Related party fee income (from our licensed broker dealer) 592,000 [2]     592,000 [2]
Other operating income 279,000 [4]   293,000   508,000 [4] 443,000 [5]
Total operating loss, net (552,000)   (1,900,000)   (508,000) (1,073,000)
General and administrative costs:            
Compensation 3,418,000   3,819,000   6,751,000 8,155,000
Operating expense, related party 514   474,000   961 929,000
Professional fees 503,000   352,000   1,187,000 1,141,000
Information technology 316,000   268,000   598,000 517,000
Clearing and other charges 338,000   35,000   766,000 324,000
General and administrative-other 489,000   545,000   840,000 1,164,000
Total operating costs 5,578,000   5,493,000   11,103,000 12,230,000
Net operating loss (6,130,000)   (7,393,000)   (11,611,000) (13,303,000)
Other income and expense:            
Miscellaneous income   75,000   75,000
Interest expense    
Interest income 81,000   175,000   146,000 356,000
Loss related to dilution events (1,267,000)     (1,363,000)
Unrealized loss on investment securities, at fair value, held by the non-licensed broker dealer (61,000) [1]     (177,000) [1]
Net loss before income taxes (7,377,000)   (7,143,000)   (13,005,000) (12,872,000)
Income tax expense    
Loss before equity method investee (7,377,000)   (7,143,000)   (13,005,000) (12,872,000)
Equity in loss of equity method investee (1,942,000)   (1,107,000)   (3,050,000) (1,980,000)
Net loss (9,319,000) $ (6,736,000) (8,250,000) $ (6,602,000) (16,055,000) (14,852,000)
Net loss attributable to non-controlling interests (2,000)   (2,000)   (3,000) (17,000)
Net loss attributable to MDB Capital Holdings, LLC (9,317,000)   (8,248,000)   (16,052,000) (14,835,000)
Unrealized loss on investment securities, net from the licensed broker dealer     2,193,000   4,882,000 [1] 3,656,000 [6]
Net loss         (11,611,000)  
Unrealized loss on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)     (2,193,000)   (4,882,000) [1] (3,656,000) [6]
Broker Dealer & Intellectual Property Service [Member]            
Operating income:            
Unrealized loss on investment securities, net from the licensed broker dealer [1] (1,835,000)          
Related party unrealized loss on investment securities, net from the licensed broker dealer [1] (29,000)       (29,000)  
Realized gain on investment securities, net from the licensed broker dealer [1] 30,000       30,000  
Fee income (from our licensed broker dealer) 411,000 [2]     3,273,000 [2] 2,140,000 [3]
Related party fee income (from our licensed broker dealer) [2] 592,000       592,000  
Other operating income 279,000 [4]   293,000   508,000 [4] 443,000 [5]
Total operating loss, net (552,000)   (1,900,000)   (508,000) (1,073,000)
General and administrative costs:            
Compensation 618,000   737,000   1,257,000 1,516,000
Operating expense, related party 389   400,000   743 760,000
Professional fees 295,000   242,000   573,000 514,000
Information technology 284,000   239,000   533,000 468,000
Clearing and other charges 338,000   35,000   766,000 324,000
General and administrative-other 206,000   150,000   397,000 356,000
Total operating costs 2,130,000   1,803,000   4,269,000 3,938,000
Net operating loss (2,682,000)   (3,703,000)     (5,011,000)
Other income and expense:            
Miscellaneous income     75,000   75,000
Interest expense (247,000)   (248,000)   (494,000) (495,000)
Interest income 80,000   129,000   144,000 244,000
Loss related to dilution events        
Unrealized loss on investment securities, at fair value, held by the non-licensed broker dealer [1] (61,000)       (177,000)  
Net loss before income taxes (2,910,000)   (3,747,000)   (5,304,000) (5,187,000)
Income tax expense    
Loss before equity method investee (2,910,000)   (3,747,000)   (5,304,000) (5,187,000)
Equity in loss of equity method investee    
Net loss (2,910,000)   (3,747,000)   (5,304,000) (5,187,000)
Net loss attributable to non-controlling interests    
Net loss attributable to MDB Capital Holdings, LLC (2,910,000)   (3,747,000)   (5,304,000) (5,187,000)
Unrealized loss on investment securities, net from the licensed broker dealer     2,193,000   4,882,000 [1] 3,656,000 [6]
Net loss         (4,777,000)  
Unrealized loss on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)     (2,193,000)   (4,882,000) [1] (3,656,000) [6]
Technology Development [Member]            
Operating income:            
Unrealized loss on investment securities, net from the licensed broker dealer [1]          
Related party unrealized loss on investment securities, net from the licensed broker dealer [1]        
Fee income (from our licensed broker dealer) [2]     [2] [3]
Related party fee income (from our licensed broker dealer) [2]        
Other operating income [4]     [4] [5]
Total operating loss, net    
General and administrative costs:            
Compensation    
Operating expense, related party    
Professional fees 6,000   6,000   9,000 51,000
Information technology    
Clearing and other charges    
General and administrative-other    
Total operating costs 6,000   6,000   9,000 51,000
Net operating loss (6,000)   (6,000)     (51,000)
Other income and expense:            
Miscellaneous income      
Interest expense    
Interest income    
Loss related to dilution events        
Unrealized loss on investment securities, at fair value, held by the non-licensed broker dealer [1]        
Net loss before income taxes (6,000)   (6,000)   (9,000) (51,000)
Income tax expense    
Loss before equity method investee (6,000)   (6,000)   (9,000) (51,000)
Equity in loss of equity method investee    
Net loss (6,000)   (6,000)   (9,000) (51,000)
Net loss attributable to non-controlling interests (2,000)   (2,000)   (3,000) (17,000)
Net loss attributable to MDB Capital Holdings, LLC (4,000)   (4,000)   (6,000) (34,000)
Unrealized loss on investment securities, net from the licensed broker dealer       [1] [6]
Net loss         (9,000)  
Unrealized loss on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)       [1] [6]
Other [Member]            
Operating income:            
Unrealized loss on investment securities, net from the licensed broker dealer [1]          
Related party unrealized loss on investment securities, net from the licensed broker dealer [1]        
Fee income (from our licensed broker dealer) [2]     [2] [3]
Related party fee income (from our licensed broker dealer) [2]        
Other operating income [4]     [4] [5]
Total operating loss, net    
General and administrative costs:            
Compensation 2,800,000   3,082,000   5,494,000 6,639,000
Operating expense, related party 125   74,000   218 169,000
Professional fees 202,000   104,000   605,000 576,000
Information technology 32,000   29,000   65,000 49,000
Clearing and other charges    
General and administrative-other 283,000   395,000   443,000 808,000
Total operating costs 3,442,000   3,684,000   6,825,000 8,241,000
Net operating loss (3,442,000)   (3,684,000)     (8,241,000)
Other income and expense:            
Miscellaneous income      
Interest expense    
Interest income 248,000   294,000   496,000 607,000
Loss related to dilution events (1,267,000)       (1,363,000)  
Unrealized loss on investment securities, at fair value, held by the non-licensed broker dealer [1]        
Net loss before income taxes (4,461,000)   (3,390,000)   (7,692,000) (7,634,000)
Income tax expense    
Loss before equity method investee (4,461,000)   (3,390,000)   (7,692,000) (7,634,000)
Equity in loss of equity method investee (1,942,000)   (1,107,000)   (3,050,000) (1,980,000)
Net loss (6,403,000)   (4,497,000)   (10,742,000) (9,614,000)
Net loss attributable to non-controlling interests    
Net loss attributable to MDB Capital Holdings, LLC (6,403,000)   (4,497,000)   (10,742,000) (9,614,000)
Unrealized loss on investment securities, net from the licensed broker dealer       [1] [6]
Net loss         (6,825,000)  
Unrealized loss on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)       [1] [6]
Eliminations [Member]            
Operating income:            
Unrealized loss on investment securities, net from the licensed broker dealer [1]          
Related party unrealized loss on investment securities, net from the licensed broker dealer [1]        
Fee income (from our licensed broker dealer) [2]     [2] [3]
Related party fee income (from our licensed broker dealer) [2]        
Other operating income [4]     [4] [5]
Total operating loss, net    
General and administrative costs:            
Compensation    
Operating expense, related party    
Professional fees    
Information technology    
Clearing and other charges    
General and administrative-other    
Total operating costs    
Net operating loss      
Other income and expense:            
Miscellaneous income    
Interest expense 247,000   248,000   494,000 495,000
Interest income (247,000)   (248,000)   (494,000) (495,000)
Loss related to dilution events        
Unrealized loss on investment securities, at fair value, held by the non-licensed broker dealer [1]        
Net loss before income taxes    
Income tax expense    
Loss before equity method investee    
Equity in loss of equity method investee    
Net loss    
Net loss attributable to non-controlling interests    
Net loss attributable to MDB Capital Holdings, LLC    
Unrealized loss on investment securities, net from the licensed broker dealer       [1] [6]
Net loss          
Unrealized loss on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)       [1] [6]
[1] Includes unrealized gains and losses on securities held by the broker-dealer.
[2] Includes fee income generated for the broker-dealer from investment banking activities, including advisory services, capital raising, and other related financial transactions.
[3] Includes fee income generated for the broker-dealer from investment banking activities, including advisory services, capital raising, and other related financial transactions.
[4] Includes fees earned from self-clearing activities by the broker-dealer and professional fees generated by PatentVest services.
[5] Includes fees earned from self-clearing activities by the broker-dealer and professional fees generated by PatentVest services.
[6] Includes unrealized gains and losses on securities held by the broker-dealer.