0001513363 2023-08-03 2023-08-03 false 0001513363 FIDUS INVESTMENT Corp 8-K 2023-08-03 MD 814-00861 27-5017321 1603 Orrington Avenue Suite 1005 Evanston IL 60201 847 859-3940 false false false false Common Stock, par value $0.001 per share FDUS NASDAQ false