Watts Water Technologies, Inc. (WTS) Ownership
WTS ownership summary
as of October 18, 2026- Institutions
- 101.3% of shares outstanding
- Insiders
- 0.98% of shares outstanding
- Shares outstanding
- 27.5M
- Float
- 27.1M shares available to trade
- Short interest
- 3.65% 750K shares short
- Days to cover
- 3.83 short interest down 5.3% vs prior month
- Institutions 101.32%
- Insiders 0.98%
WTS top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 8.45% | 2.8M | $1.01B | −853,653 (−23.2%) | June 30, 2026 |
| 2 | Kayne Anderson Rudnick Investment Management LLC | 5.94% | 2.0M | $707.7M | −143,227 (−6.7%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 4.48% | 1.5M | $533.9M | −164,036 (−9.9%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.70% | 1.2M | $440.8M | +9,399 (+0.8%) | June 30, 2026 |
| 5 | Boston Partners Global Investors, Inc | 2.99% | 997K | $355.8M | +241,595 (+32.0%) | June 30, 2026 |
| 6 | State Street Corp | 2.55% | 853K | $304.1M | −138,633 (−14.0%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 2.30% | 768K | $273.8M | −151,350 (−16.5%) | June 30, 2026 |
| 8 | T. Rowe Price Associates, Inc. | 2.02% | 673K | $240.1M | −195,525 (−22.5%) | June 30, 2026 |
| 9 | Capital World Investors | 1.97% | 659K | $235.1M | +659,012 (0.0%) | June 30, 2026 |
| 10 | First Trust Advisors L.P. | 1.64% | 546K | $194.9M | +1,071 (+0.2%) | June 30, 2026 |
| 11 | Impax Asset Management Group PLC | 1.63% | 543K | $193.8M | −44,610 (−7.6%) | June 30, 2026 |
| 12 | Dimensional Fund Advisors, Inc. | 1.58% | 527K | $187.9M | +5,440 (+1.0%) | June 30, 2026 |
| 13 | Amvescap Plc. | 1.53% | 509K | $181.7M | +38,311 (+8.1%) | June 30, 2026 |
| 14 | Pictet Asset Manangement SA | 1.47% | 490K | $174.6M | +470,742 (+2,495.6%) | June 30, 2026 |
| 15 | AQR Capital Management LLC | 1.25% | 417K | $148.6M | −6,092 (−1.4%) | June 30, 2026 |
| 16 | Mirova US LLC | 1.23% | 412K | $147.0M | −25,770 (−5.9%) | June 30, 2026 |
| 17 | Gamco Investors, Inc. Et Al | 1.20% | 399K | $142.3M | −5,061 (−1.3%) | June 30, 2026 |
| 18 | BTIM Corp | 1.11% | 369K | $131.6M | −10,057 (−2.7%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 0.98% | 328K | $116.9M | +129,141 (+65.1%) | June 30, 2026 |
| 20 | Charles Schwab Investment Management Inc | 0.97% | 325K | $115.9M | −59,568 (−15.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 1.6M shares and 12 cut 1.8M.
WTS top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 2.93% | 978K | $349.0M | −348 (−0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.61% | 872K | $311.1M | −2,844 (−0.3%) | August 31, 2026 |
| 3 | American Funds SMALLCAP World A | 2.13% | 711K | $253.8M | +70,000 (+10.9%) | September 30, 2026 |
| 4 | JHancock Disciplined Value Mid Cap I | 1.98% | 660K | $235.4M | −15,108 (−2.2%) | August 31, 2026 |
| 5 | Vanguard Small Cap Index | 1.85% | 618K | $220.4M | −14,165 (−2.2%) | September 30, 2026 |
| 6 | Pictet-Water I EUR | 1.15% | 385K | $137.4M | +385,282 (0.0%) | June 30, 2026 |
| 7 | Virtus KAR Small-Cap Core I | 1.04% | 348K | $124.1M | −20,500 (−5.6%) | June 30, 2026 |
| 8 | First Trust SMID Cp Rising Div Achv ETF | 0.91% | 302K | $107.9M | — | September 30, 2026 |
| 9 | 1290 VT GAMCO Small Company Value IB | 0.66% | 221K | $78.9M | −800 (−0.4%) | August 31, 2026 |
| 10 | iShares Global Water ETF USD Dist | 0.62% | 206K | $73.6M | — | September 30, 2026 |
| 11 | State Street® SPDR® S&P MIDCAP 400® ETF | 0.61% | 203K | $72.4M | +2,160 (+1.1%) | September 30, 2026 |
| 12 | Vanguard MStar Small Cap Value Index | 0.60% | 201K | $71.8M | −200,281 (−49.9%) | September 30, 2026 |
| 13 | Polar Cptl PLCArtfclIntllgncSAcc | 0.56% | 185K | $66.2M | — | August 31, 2026 |
| 14 | Mirova Global Sust Eq N/A EUR | 0.54% | 181K | $64.7M | +52 (+0.0%) | August 31, 2026 |
| 15 | Amundi MSCI Water UCITS ETF Dist | 0.52% | 174K | $62.2M | — | September 29, 2026 |
| 16 | Vanguard MStar Small Cap Growth Indx Inv | 0.52% | 172K | $61.4M | +172,239 (0.0%) | September 30, 2026 |
| 17 | T. Rowe Price New Horizons | 0.51% | 169K | $60.4M | — | September 30, 2026 |
| 18 | BNP Paribas Aqua C C | 0.51% | 169K | $60.2M | −24 (−0.0%) | August 31, 2026 |
| 19 | BNP Paribas Aqua I | 0.50% | 168K | $59.8M | −15 (−0.0%) | August 31, 2026 |
| 20 | iShares S&P Mid-Cap 400 Growth ETF | 0.47% | 159K | $56.5M | −170 (−0.1%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
WTS insider transactions
latest 15| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-19 | Elie Melhem | Sell | $292.13 | 372 | $108,672 |
| 2026-03-18 | Elie Melhem | Sell | $300.03 | 379 | $113,711 |
| 2026-03-12 | Michael J Dubose | Sell | $301.70 | 332 | $100,164 |
| 2026-02-20 | Timothy P Horne | Sell | $330.04 | 7,500 | $2.5M |
| 2026-02-19 | Robert J Pagano Jr | Sell | $327.31 | 16,066 | $5.3M |
| 2026-02-17 | Kenneth Robert Lepage | Sell | $321.08 | 5,025 | $1.6M |
| 2025-12-17 | Virginia A Halloran | Sell | $276.78 | 605 | $167,452 |
| 2025-11-25 | Timothy P Horne | Sell | $272.32 | 6,814 | $1.9M |
| 2025-11-24 | Timothy P Horne | Sell | $272.26 | 942 | $256,469 |
| 2025-11-20 | Timothy P Horne | Sell | $272.00 | 250 | $68,000 |
| 2025-11-12 | Timothy P Horne | Sell | $278.65 | 6,994 | $1.9M |
| 2025-08-13 | Joseph T Noonan | Sell | $274.45 | 713 | $195,683 |
| 2025-05-28 | Timothy P Horne | Sell | $241.85 | 7,000 | $1.7M |
| 2025-05-13 | Monica Barry | Sell | $245.40 | 768 | $188,467 |
| 2025-05-12 | Shashank Patel | Sell | $245.00 | 8,000 | $2.0M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
WTS shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns WTS
Institutional investors own 101.3% of Watts Water Technologies's shares and insiders 0.98%. The largest holder is BlackRock Inc with 8.45% of the shares (2.8M), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 12 reduced their stake in the latest filings. Short interest is 3.65% of the float, or 3.83 days of average trading volume. The share count fell 5.4% since 2014.
Related: WTS analyst forecast, WTS key metrics, WTS dividend history. See the WTS stock overview for the latest quote and news.
WTS ownership FAQ
Who owns the most Watts Water Technologies stock?
The largest shareholders of Watts Water Technologies are BlackRock Inc (8.45%), Kayne Anderson Rudnick Investment Management LLC (5.94%), Vanguard Portfolio Management, LLC (4.48%), Vanguard Capital Management, LLC (3.70%), Boston Partners Global Investors, Inc (2.99%).
What percentage of Watts Water Technologies is owned by institutions?
Institutions hold 101.3% of Watts Water Technologies's shares outstanding; insiders hold 0.98%.
Which funds own Watts Water Technologies?
The largest fund holders of Watts Water Technologies are iShares Core S&P Mid-Cap ETF (2.93%), Vanguard MStar Total Stk Mkt Idx Invest (2.61%), American Funds SMALLCAP World A (2.13%), JHancock Disciplined Value Mid Cap I (1.98%), Vanguard Small Cap Index (1.85%).
What is Watts Water Technologies's short interest?
750K shares of Watts Water Technologies were sold short, 3.65% of the float; at the average daily volume it would take 3.83 days to cover.
Are insiders buying or selling Watts Water Technologies?
Of the latest 15 reported insider transactions in Watts Water Technologies (since May 12, 2025), 0 were purchases and 15 were sales.
How many shares of Watts Water Technologies are outstanding?
Watts Water Technologies has 27.5M shares outstanding, of which 27.1M are in the public float.