Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in WTS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.7M | $1.07B | +1.9% | 11.001% | 0.02% |
| 2 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 2.1M | $617.5M | -0.9% | 6.370% | 1.81% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.7M | $482.1M | β | 4.973% | 0.03% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $356.0M | β | 3.672% | 0.01% |
| 5 | STATE STREET CORP | 991K | $287.7M | +1.5% | 2.968% | 0.01% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 919K | $266.8M | +10.4% | 2.752% | 0.02% |
| 7 | Boston Partners | 756K | $219.1M | -15.2% | 2.264% | 0.23% |
| 8 | Impax Asset Management Group plc | 588K | $170.7M | -9.2% | 1.761% | 1.19% |
| 9 | FIRST TRUST ADVISORS LP | 545K | $158.3M | +6.7% | 1.633% | 0.11% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 521K | $151.3M | -0.3% | 1.561% | 0.03% |
| 11 | Invesco Ltd. | 471K | $136.8M | +3.2% | 1.411% | 0.02% |
| 12 | Mirova US LLC | 438K | $127.1M | -4.9% | 1.311% | 1.44% |
| 13 | AQR CAPITAL MANAGEMENT LLC | 423K | $121.4M | +34.5% | 1.265% | 0.06% |
| 14 | GAMCO INVESTORS, INC. ET AL | 404K | $117.3M | -5.1% | 1.210% | 1.16% |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 385K | $111.6M | -0.4% | 1.152% | 0.02% |
| 16 | Boston Trust Walden Corp | 379K | $110.0M | -13.4% | 1.135% | 0.90% |
| 17 | NORTHERN TRUST CORP | 361K | $104.8M | +1.8% | 1.081% | 0.01% |
| 18 | GOLDMAN SACHS GROUP INC | 281K | $81.7M | -0.5% | 0.843% | 0.01% |
| 19 | Neuberger Berman Group LLC | 266K | $77.2M | +184.1% | 0.797% | 0.06% |
| 20 | Port Capital LLC | 257K | $74.7M | +0.1% | 0.771% | 3.32% |
| 21 | Cartenna Capital, LP | 240K | $69.7M | +9.1% | 0.719% | 3.04% |
| 22 | Bank of New York Mellon Corp | 228K | $66.3M | -2.3% | 0.684% | 0.01% |
| 23 | LAZARD ASSET MANAGEMENT LLC | 219K | $63.5M | +79.8% | 0.655% | 0.10% |
| 24 | WELLS FARGO & COMPANY/MN | 212K | $61.6M | -12.3% | 0.636% | 0.01% |
| 25 | MORGAN STANLEY | 199K | $57.6M | -9.7% | 0.595% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in WTS β a direct measure of their conviction.
Filings activity in WTS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new WTS position in Q1 2026
Institutions that fully closed their WTS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 508 | +5.2% | 64.04% | +2.44 pp | $7.12B | +4.0% |
| Q4 2025 | 483 | +5.0% | 61.60% | 0.11 pp | $6.85B | 0.2% |
| Q3 2025 | 460 | +1.5% | 61.71% | 25.43 pp | $6.86B | 29% |
| Q2 2025 | 453 | +7.1% | 87.14% | +41.81 pp | $9.69B | +92% |
| Q1 2025 | 423 | +4.7% | 45.33% | 0.55 pp | $5.04B | 1.2% |
| Q4 2024 | 404 | +2.8% | 45.88% | 1.90 pp | $5.10B | 4.0% |
| Q3 2024 | 393 | 1.3% | 47.78% | +7.71 pp | $5.31B | +19% |
| Q2 2024 | 398 | β | 40.07% | β | $4.46B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying WTS stock.
Based on Q1 2026 13F filings, institutional ownership of Watts Water Technologies, Inc. stands at 64.0%, held across 508 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of WTS, with approximately 3,673,720 shares worth $1.07B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of WTS.
Our composite Smart Money Score for WTS is 54 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
68 institutions opened new positions in WTS during Q1 2026, while 43 fully exited. 336 added to existing positions and 103 trimmed.
WTS institutional ownership rose by 2.44 percentage points quarter-over-quarter, with a net change of +25 holders.
The top 10 institutions account for 53.0% of all reported 13F value in WTS, and the top 25 account for 72.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Watts Water Technologies, Inc. (WTS) Institutional Ownership