Magnetar Financial SC 13D SP Plus / Magnetar Financial ownership change

EXHIBIT 99.1

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13D with respect to the Shares of SP Plus Corporation. dated as of November 24, 2023 is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the previsions of Rule13d-1(k) under the Securities Exchange Act of 1934, as amended.

Date: November 24, 2023	magnetar financial llc
		By: Magnetar Capital Partners LP, its Sole Member
		By:	/s/ Hayley Stein
		Name:	Hayley Stein
		Title:	Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC
Date: November 24, 2023	magnetar capital partners LP
		By: Supernova Management LLC, its General Partner
		By:	/s/ Hayley Stein
		Name:	Hayley Stein
		Title:	Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC
Date: November 24, 2023	supernova management llc
		By:	/s/ Hayley Stein
		Name:	Hayley Stein
		Title:	Attorney-in-fact for David J. Snyderman, Manager
Date: November 24, 2023	DAVID J. SNYDERMAN
		By:	/s/ Hayley Stein
		Name:	Hayley Stein
		Title:	Attorney-in-fact for David J. Snyderman