Watts Water Technologies Inc (WTS): Billionaire Mario Gabelli’s GAMCO Investors Slightly Decreases Its Stake

Page 6 of 15 – SEC Filing

CUSIP No. 942749102

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	Source of funds (SEE INSTRUCTIONS) None
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization    Delware
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power None
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power None
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person None
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) 0.00%
14	Type of reporting person (SEE INSTRUCTIONS)     HC, CO