13D Filing: Gamco Investors and Cablevision Systems Corp (CVC)

1

Names of reporting persons

I.R.S. identification nos. of above persons (entities only)

GAMCO Investors, Inc.                                                                                      I.D. No.  13-4007862

2

Check the appropriate box if a member of a group (SEE INSTRUCTIONS)  (a)

(b)

3

Sec use only

4

WC

5

Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6

Citizenship or place of organization

Delaware

Number Of

Shares

Beneficially

Owned

By Each

Reporting

Person

With

: 7

:

:

:

Sole voting power

16,699   (Item 5)

: 8

:

:

:

Shared voting power

None

: 9

:

:

:

Sole dispositive power

16,699   (Item 5)

:10

:

:

:

Shared dispositive power

None

11

Aggregate amount beneficially owned by each reporting person

16,699   (Item 5)

12

Check box if the aggregate amount in row (11) excludes certain shares

(SEE INSTRUCTIONS)  X

13

Percent of class represented by amount in row (11)

0.01%

14

Type of reporting person (SEE INSTRUCTIONS)

    HC, CO