Ranked by reported Q2 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. | 2.8M | $1.10B | -23.2% | 8.446% | 0.02% |
| 2 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 2.0M | $776.7M | -6.7% | 5.942% | 2.41% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5M | $585.9M | -9.9% | 4.482% | 0.03% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $483.7M | +0.8% | 3.701% | 0.01% |
| 5 | Boston Partners | 997K | $389.9M | +32.0% | 2.987% | 0.35% |
| 6 | STATE STREET CORP | 853K | $333.6M | -14.0% | 2.553% | 0.00% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 768K | $300.5M | -16.5% | 2.299% | 0.02% |
| 8 | Capital World Investors | 659K | $258.0M | — | 1.974% | 0.03% |
| 9 | FIRST TRUST ADVISORS LP | 546K | $213.9M | +0.2% | 1.637% | 0.13% |
| 10 | Impax Asset Management Group plc | 543K | $212.7M | -7.6% | 1.627% | 1.38% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 527K | $206.1M | +1.0% | 1.578% | 0.04% |
| 12 | Invesco Ltd. | 509K | $199.4M | +8.1% | 1.526% | 0.02% |
| 13 | Pictet Asset Management Holding SA | 490K | $191.6M | +2495.6% | 1.466% | 0.18% |
| 14 | Mirova US LLC | 412K | $161.3M | -5.9% | 1.234% | 1.73% |
| 15 | AQR CAPITAL MANAGEMENT LLC | 417K | $159.3M | -1.4% | 1.247% | 0.06% |
| 16 | GAMCO INVESTORS, INC. ET AL | 399K | $156.2M | -1.3% | 1.195% | 1.40% |
| 17 | Boston Trust Walden Corp | 369K | $144.4M | -2.6% | 1.105% | 1.10% |
| 18 | MORGAN STANLEY | 328K | $128.3M | +65.0% | 0.981% | 0.01% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 325K | $127.2M | -15.5% | 0.973% | 0.02% |
| 20 | Neuberger Berman Group LLC | 314K | $123.0M | +18.1% | 0.941% | 0.04% |
| 21 | NORTHERN TRUST CORP | 261K | $102.0M | -27.8% | 0.781% | 0.01% |
| 22 | Port Capital LLC | 249K | $97.4M | -3.3% | 0.745% | 3.98% |
| 23 | NORGES BANK | 241K | $94.5M | — | 0.723% | 0.01% |
| 24 | UBS Group AG | 239K | $93.6M | +202.6% | 0.716% | 0.01% |
| 25 | GOLDMAN SACHS GROUP INC | 227K | $88.8M | -19.4% | 0.679% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in WTS — a direct measure of their conviction.
Filings activity in WTS during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 580 | +12% | 81.68% | 15.40 pp | $10.03B | +38% |
| Q1 2026 | 517 | +6.8% | 97.08% | +17.29 pp | $7.26B | +5.8% |
| Q4 2025 | 484 | +4.8% | 79.79% | 15.72 pp | $6.86B | 0.3% |
| Q3 2025 | 462 | +2.0% | 95.51% | 48.73 pp | $6.88B | 29% |
| Q2 2025 | 453 | +7.1% | 144.24% | +48.63 pp | $9.69B | +92% |
| Q1 2025 | 423 | +4.7% | 95.61% | +15.92 pp | $5.04B | 1.2% |
| Q4 2024 | 404 | +2.8% | 79.69% | 15.48 pp | $5.10B | 4.0% |
| Q3 2024 | 393 | — | 95.17% | — | $5.31B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying WTS stock.
Based on Q2 2026 13F filings, institutional ownership of Watts Water Technologies, Inc. stands at 81.7%, held across 580 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of WTS, with approximately 2,820,067 shares worth $1.10B as of Q2 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 37 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
108 institutions opened new positions in WTS during Q2 2026, while 50 fully exited. 394 added to existing positions and 61 trimmed.
WTS institutional ownership fell by 15.40 percentage points quarter-over-quarter, with a net change of +63 holders.
The top 10 institutions account for 46.5% of all reported 13F value in WTS, and the top 25 account for 67.1%.
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