Mario Gabelli Backs Watts Water Technologies (WTS) on Building Efficiency Trends

Watts Water Technologies Inc. (NYSE:WTS) is one of the best stocks to buy according to billionaire Mario Gabelli. Watts Water Technologies Inc. (NYSE:WTS) is the 11th-largest holding for GAMCO Investors, and the fund’s 13F filings as of the end of Q4 2025 indicate it has reduced its position in the stock by around 3.5% versus last quarter, to 425,854 shares. That pales in comparison to the nearly 1 million shares it used to command in early 2020 and over 2 million in 2012, according to Insider Monkey’s da ...