Thermon Group Holdings, Inc.
THRDelisted Jun 1, 2026- Industry
- Electrical Industrial Apparatus
- SEC CIK
- 0001489096
Thermon Group Holdings, Inc. was delisted on Jun 1, 2026; its insiders filed their last Form 4 on Jun 3, 2026; 217 institutions reported holding it in 13F filings for Q1 2026, worth $1.65B in total; Soros Fund Management was the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in Thermon Group Holdings, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
THR is no longer listed, so this page shows Q1 2026. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 217
- +27 vs. Q4 2025
- Shares held
- 32.9M
- +3.00M (+10.1%) vs. Q4 2025
- Total value
- $1.65B
- +$542.8M (+48.9%) vs. Q4 2025
- New holders
- 67
- 56 more added
- Sold out
- 40
- 73 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting THR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 3 | $4.78M |
| Q1 2026 | 217 | $1.65B |
| Q4 2025 | 193 | $1.23B |
| Q3 2025 | 158 | $885.2M |
| Q2 2025 | 169 | $905.2M |
| Q1 2025 | 160 | $868.2M |
| Q4 2024 | 169 | $933.8M |
| Q3 2024 | 151 | $948.2M |
| Q2 2024 | 155 | $980.3M |
| Q1 2024 | 146 | $1.08B |
| Q4 2023 | 159 | $1.04B |
| Q3 2023 | 150 | $878.5M |
| Q2 2023 | 153 | $839.7M |
| Q1 2023 | 155 | $793.2M |
| Q4 2022 | 134 | $629.9M |
| Q3 2022 | 120 | $488.7M |
| Q2 2022 | 108 | $449.0M |
| Q1 2022 | 113 | $508.2M |
| Q4 2021 | 107 | $529.5M |
| Q3 2021 | 95 | $545.0M |
| Q2 2021 | 94 | $536.1M |
| Q1 2021 | 98 | $616.5M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Thermon Group Holdings, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ameriprise Financial Inc | 569,672 | $28.7M | 0.01% | −103,663−15.4% | Reduced |
| Citigroup Inc | 577,926 | $29.1M | 0.02% | +566,278+4,861.6% | Added |
| Needham Investment Management LLC | 632,500 | $31.9M | 1.63% | +12,500+2.0% | Added |
| Harvey Partners, LLC | 646,728 | $32.6M | 2.65% | −125,342−16.2% | Reduced |
| William Blair Investment Management, LLC | 647,539 | $32.6M | 0.11% | −239,912−27.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 679,685 | $34.3M | 0.02% | +171,346+33.7% | Added |
| Magnetar Financial LLC | 757,996 | $38.2M | 0.39% | +757,996 | New |
| State Street Corp | 772,529 | $38.9M | 0.00% | +10,689+1.4% | Added |
| Westwood Holdings Group Inc. | 782,763 | $39.5M | 0.29% | −194,058−19.9% | Reduced |
| Geode Capital Management, LLC | 832,516 | $42.0M | 0.00% | +50,439+6.4% | Added |
| GW&K Investment Management, LLC | 952,518 | $48.0M | 0.42% | −674,739−41.5% | Reduced |
| Medina Singh Partners, LLC | 966,319 | $48.7M | 10.20% | −77,207−7.4% | Reduced |
| Vanguard Capital Management LLC | 1,387,057 | $69.9M | 0.00% | +1,387,057 | New |
| Vanguard Portfolio Management LLC | 1,404,091 | $70.8M | 0.00% | +1,404,091 | New |
| Dimensional Fund Advisors LP | 1,730,100 | $87.2M | 0.02% | −4790.0% | Reduced |
| BlackRock, Inc. | 2,588,149 | $130.4M | 0.00% | −93,501−3.5% | Reduced |
| FMR LLC | 2,970,723 | $149.7M | 0.01% | +552,961+22.9% | Added |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −731,373−100.0% | Sold out |
| Clifford Capital Partners LLC | 0 | $0 | 0.00% | −430,230−100.0% | Sold out |
| Heartland Advisors Inc | 0 | $0 | 0.00% | −255,533−100.0% | Sold out |
| Lightrock Netherlands B.V. | 0 | $0 | 0.00% | −248,075−100.0% | Sold out |
| Wedge Capital Management L L P | 0 | $0 | 0.00% | −142,253−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −100,562−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −77,101−100.0% | Sold out |
| Peregrine Asset Advisers, Inc. | 0 | $0 | 0.00% | −61,413−100.0% | Sold out |
| Blair William & Co | 0 | $0 | 0.00% | −61,065−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −56,108−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −48,447−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −32,853−100.0% | Sold out |
| D.A. Davidson & Co. | 0 | $0 | 0.00% | −28,678−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −27,917−100.0% | Sold out |
| North Star Investment Management Corp. | 0 | $0 | 0.00% | −24,200−100.0% | Sold out |
| Globeflex Capital L P | 0 | $0 | 0.00% | −23,005−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −17,361−100.0% | Sold out |
| Denali Advisors LLC | 0 | $0 | 0.00% | −17,157−100.0% | Sold out |
| Snowden Capital Advisors LLC | 0 | $0 | 0.00% | −15,432−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −15,288−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −15,018−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −14,358−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −13,923−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −13,472−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −12,558−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −12,469−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −11,800−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −11,232−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −10,830−100.0% | Sold out |
| Equitable Trust Co | 0 | $0 | 0.00% | −8,854−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −8,353−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −7,800−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −6,296−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −5,501−100.0% | Sold out |
| Kemnay Advisory Services Inc. | 0 | $0 | 0.00% | −2,626−100.0% | Sold out |
| Nkcfo LLC | 0 | $0 | 0.00% | −2,295−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −1,033−100.0% | Sold out |
| First Horizon Corp | 0 | $0 | 0.00% | −652−100.0% | Sold out |
| Rockefeller Capital Management L.P. | 0 | $0 | 0.00% | −387−100.0% | Sold out |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |