The current institutional shareholding score of Old Second Bancorp Inc is 7.00, ranking 70 out of 398 in the Banking Services industry. The latest institutional shareholding proportion is 81.21%, representing a quarter-over-quarter increase of 15.99%. The largest institutional shareholder is ETHSX, holding a total of 91.85K shares, representing 0.19% of shares outstanding, with 5.56% increase in holdings.