OSBC ▲ +2.3% - Old Second Bancorp, Inc. $OSBC - O2 Sponsor Finance Hires Aaron Markos as Senior Vice President Old Second Bancorp rose 2.3% following the announcement that O2 Sponsor Finance, a division of the company, hired Aaron Markos as Senior Vice President. The appointment signals expansion within the sponsor finance unit, which focuses on lending to private equity firms and their portfolio companies. 02-SEP-2026 11:00 AM ET