Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in THR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 3.0M | $149.7M | +22.9% | 9.019% | 0.01% |
| 2 | BlackRock, Inc. | 2.6M | $130.4M | -3.5% | 7.857% | 0.00% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 1.7M | $87.2M | -0.0% | 5.252% | 0.02% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $70.8M | β | 4.263% | 0.00% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $69.9M | β | 4.211% | 0.00% |
| 6 | Medina Value Partners, LLC | 966K | $48.7M | -7.4% | 2.934% | 10.20% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 833K | $42.0M | +6.5% | 2.527% | 0.00% |
| 8 | WESTWOOD HOLDINGS GROUP INC | 783K | $39.5M | -19.9% | 2.376% | 0.29% |
| 9 | STATE STREET CORP | 773K | $38.9M | +1.4% | 2.345% | 0.00% |
| 10 | Magnetar Financial LLC | 758K | $38.2M | β | 2.301% | 0.39% |
| 11 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 680K | $34.3M | +33.7% | 2.063% | 0.02% |
| 12 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 648K | $32.6M | -27.0% | 1.966% | 0.11% |
| 13 | Harvey Partners, LLC | 647K | $32.6M | -16.2% | 1.963% | 2.65% |
| 14 | NEEDHAM INVESTMENT MANAGEMENT LLC | 633K | $31.9M | +2.0% | 1.920% | 1.63% |
| 15 | CITIGROUP INC | 578K | $29.1M | +4861.6% | 1.755% | 0.01% |
| 16 | AMERIPRISE FINANCIAL INC | 570K | $28.7M | -15.4% | 1.729% | 0.01% |
| 17 | KEMPEN CAPITAL MANAGEMENT N.V. | 516K | $26.0M | -25.1% | 1.568% | 0.23% |
| 18 | Qube Research & Technologies Ltd | 509K | $25.7M | +305.2% | 1.545% | 0.03% |
| 19 | GOLDMAN SACHS GROUP INC | 487K | $24.5M | +102.1% | 1.478% | 0.00% |
| 20 | ALPINE ASSOCIATES MANAGEMENT INC. | 486K | $24.5M | β | 1.475% | 1.44% |
| 21 | Swedbank AB | 470K | $23.7M | -32.3% | 1.427% | 0.02% |
| 22 | NEW SOUTH CAPITAL MANAGEMENT INC | 458K | $23.1M | -3.4% | 1.392% | 1.11% |
| 23 | BALYASNY ASSET MANAGEMENT LLC | 451K | $22.7M | +2990.2% | 1.368% | 0.08% |
| 24 | SOROS FUND MANAGEMENT LLC | 448K | $22.6M | β | 1.360% | 0.27% |
| 25 | Nuveen, LLC | 428K | $21.6M | +94.0% | 1.300% | 0.01% |
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 THR β a direct measure of their conviction.
Filings activity in THR during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new THR position in Q1 2026
Institutions that fully closed their THR 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 | 209 | +9.4% | 78.74% | +21.41 pp | $1.59B | +37% |
| Q4 2025 | 191 | +24% | 57.33% | +17.27 pp | $1.16B | +43% |
| Q3 2025 | 154 | 7.8% | 40.06% | +1.38 pp | $807M | +3.6% |
| Q2 2025 | 167 | +4.4% | 38.68% | 0.32 pp | $779M | 0.8% |
| Q1 2025 | 160 | 4.2% | 39.00% | 1.04 pp | $786M | 2.6% |
| Q4 2024 | 167 | +11% | 40.04% | 0.23 pp | $807M | 0.6% |
| Q3 2024 | 151 | 0.7% | 40.27% | 1.03 pp | $811M | 2.5% |
| Q2 2024 | 152 | β | 41.30% | β | $832M | 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 THR stock.
Based on Q1 2026 13F filings, institutional ownership of Thermon Group Holdings, Inc. stands at 78.7%, held across 209 reporting institutions.
FMR LLC is the largest reported institutional holder of THR, with approximately 2,970,723 shares worth $0.15B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of THR, including SOROS FUND MANAGEMENT LLC.
Our composite Smart Money Score for THR is 62 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
62 institutions opened new positions in THR during Q1 2026, while 44 fully exited. 114 added to existing positions and 32 trimmed.
THR institutional ownership rose by 21.41 percentage points quarter-over-quarter, with a net change of +18 holders.
The top 10 institutions account for 45.1% of all reported 13F value in THR, and the top 25 account for 70.5%.
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.
Thermon Group Holdings, Inc. (THR) Institutional Ownership