13D Filing: Magnetar Capital and Stewart Information Services Corp (STC)

CUSIP No.   860372101

SCHEDULE 13D

1.

Name of Reporting Person:
Supernova Management LLC

2.

Check the Appropriate Box if a Member of a Group

(a)

 o

(b)

 x

3.

SEC Use Only

4.

Source of Funds

OO

5.

Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)     o

6.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

7.

Sole Voting Power
0

8.

Shared Voting Power
1,321,345

9.

Sole Dispositive Power
0

10.

Shared Dispositive Power
1,321,345

11.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,321,345

12.

Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares  o

13.

Percent of Class Represented by Amount in Row (11)
5.57%

14.

Type of Reporting Person
HC; OO