THERMON GROUP HOLDINGS INC (THR) Top Institutional Shareholders
THERMON GROUP HOLDINGS INC (THR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $1.59B in THR holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of THR tracked by InsiderSet, reporting ownership valued at approximately $149.72M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $181.63M, representing an estimated gain of +21.31% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 45% of the total disclosed THR value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in THERMON GROUP HOLDINGS INC (THR).
This page ranks the largest institutional THR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
212
Total Reported Value
$1.59B
Largest Holder
Fmr Llc
Largest Position
$149.72M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
167
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.01% | 2,970,723 | $149,724,439 | $181,630,004 | +$31,905,565 | +21.31% | |
| Blackrock, Inc. | 0.00% | 2,588,149 | $130,442,710 | $158,239,430 | +$27,796,720 | +21.31% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,730,100 | $87,194,685 | $105,778,314 | +$18,583,629 | +21.31% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,404,091 | $70,766,186 | $85,846,124 | +$15,079,938 | +21.31% | |
| Vanguard Capital Management Llc | 0.00% | 1,387,057 | $69,907,673 | $84,804,665 | +$14,896,992 | +21.31% | |
| Medina Value Partners, Llc | 10.20% | 966,319 | $48,702,478 | $59,080,744 | +$10,378,266 | +21.31% | |
| Geode Capital Management, Llc | 0.00% | 832,516 | $41,966,585 | $50,900,028 | +$8,933,443 | +21.29% | |
| Westwood Holdings Group Inc | 0.29% | 782,763 | $39,451,254 | $47,858,130 | +$8,406,876 | +21.31% | |
| State Street Corp | 0.00% | 772,529 | $38,935,462 | $47,232,423 | +$8,296,961 | +21.31% | |
| Magnetar Financial Llc | 0.39% | 757,996 | $38,202,998 | $46,343,875 | +$8,140,877 | +21.31% | |
| Arrowstreet Capital, Limited Partnership | 0.02% | 679,685 | $34,256,124 | $41,555,941 | +$7,299,817 | +21.31% | |
| William Blair Investment Management, Llc | 0.11% | 647,539 | $32,635,966 | $39,590,534 | +$6,954,568 | +21.31% | |
| Harvey Partners, Llc | 2.65% | 646,728 | $32,595,091 | $39,540,950 | +$6,945,859 | +21.31% | |
| Needham Investment Management Llc | 1.63% | 632,500 | $31,878,000 | $38,671,050 | +$6,793,050 | +21.31% | |
| Citigroup Inc | 0.02% | 577,926 | $29,127,471 | $35,334,396 | +$6,206,925 | +21.31% | |
| Ameriprise Financial Inc | 0.01% | 569,672 | $28,711,470 | $34,829,746 | +$6,118,276 | +21.31% | |
| Van Lanschot Kempen Investment Management N.V. | 0.23% | 516,471 | $26,030,138 | $31,577,037 | +$5,546,899 | +21.31% | |
| Qube Research & Technologies Ltd | 0.04% | 508,956 | $25,651,382 | $31,117,570 | +$5,466,188 | +21.31% | |
| Goldman Sachs Group Inc | 0.00% | 486,880 | $24,538,752 | $29,767,843 | +$5,229,091 | +21.31% | |
| Alpine Associates Management Inc. | 1.44% | 485,882 | $24,488,454 | $29,706,825 | +$5,218,371 | +21.31% | |
| Swedbank Ab | 0.02% | 470,000 | $23,688,000 | $28,735,800 | +$5,047,800 | +21.31% | |
| New South Capital Management Inc | 1.11% | 458,387 | $23,102,705 | $28,025,781 | +$4,923,076 | +21.31% | |
| Balyasny Asset Management L.P. | 0.04% | 450,549 | $22,707,670 | $27,546,566 | +$4,838,896 | +21.31% | |
| Soros Fund Management Llc | 0.31% | 448,088 | $22,583,635 | $27,396,100 | +$4,812,465 | +21.31% | |
| Nuveen, Llc | 0.01% | 428,179 | $21,580,222 | $26,178,864 | +$4,598,642 | +21.31% | |
| Aqr Arbitrage Llc | 0.35% | 416,851 | $21,009,290 | $25,486,270 | +$4,476,980 | +21.31% | |
| Kennedy Capital Management Llc | 0.39% | 368,773 | $18,586,159 | $22,546,781 | +$3,960,622 | +21.31% | |
| Two Sigma Investments, Lp | 0.01% | 356,278 | $17,956,411 | $21,782,837 | +$3,826,426 | +21.31% | |
| Assenagon Asset Management S.A. | 0.03% | 345,731 | $17,424,842 | $21,137,993 | +$3,713,151 | +21.31% | |
| Ubs Group Ag | 0.00% | 336,551 | $16,962,171 | $20,576,728 | +$3,614,557 | +21.31% | |
| Deutsche Bank Ag\ | 0.01% | 319,662 | $16,110,965 | $19,544,135 | +$3,433,170 | +21.31% | |
| Northern Trust Corp | 0.00% | 313,446 | $15,797,678 | $19,164,088 | +$3,366,410 | +21.31% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 305,373 | $15,390,799 | $18,670,505 | +$3,279,706 | +21.31% |
| Invesco Ltd. | 0.00% | 294,827 | $14,859,281 | $18,025,723 | +$3,166,442 | +21.31% | |
| Charles Schwab Investment Management Inc | 0.00% | 269,314 | $13,573,426 | $16,465,858 | +$2,892,432 | +21.31% | |
| Janus Henderson Group Plc | 0.01% | 243,471 | $12,271,037 | $14,885,817 | +$2,614,780 | +21.31% | |
| Meros Investment Management, Lp | 5.27% | 241,463 | $12,169,735 | $14,763,048 | +$2,593,313 | +21.31% | |
| Vanguard Fiduciary Trust Co | 0.00% | 213,453 | $10,758,031 | $13,050,516 | +$2,292,485 | +21.31% | |
| Millennium Management Llc | 0.01% | 212,505 | $10,710,252 | $12,992,556 | +$2,282,304 | +21.31% | |
| Jane Street Group, Llc | 0.01% | 205,581 | $10,361,282 | $12,569,222 | +$2,207,940 | +21.31% | |
| Silvercrest Asset Management Group Llc | 0.07% | 187,770 | $9,463,608 | $11,480,258 | +$2,016,650 | +21.31% | |
| Alliancebernstein L.P. | 0.00% | 250,167 | $9,296,206 | $15,295,210 | +$5,999,004 | +64.53% | |
| Public Employees Retirement System Of Ohio | 0.03% | 169,388 | $8,537,155 | $10,356,382 | +$1,819,227 | +21.31% | |
| Morgan Stanley | 0.00% | 165,468 | $8,339,663 | $10,116,714 | +$1,777,051 | +21.31% | |
| Russell Investments Group, Ltd. | 0.01% | 156,754 | $7,900,421 | $9,583,940 | +$1,683,519 | +21.31% | |
| Oberweis Asset Management Inc/ | 0.23% | 154,700 | $7,796,880 | $9,458,358 | +$1,661,478 | +21.31% | |
| Bank Of America Corp | 0.00% | 153,491 | $7,735,947 | $9,384,440 | +$1,648,493 | +21.31% | |
| Eversource Wealth Advisors, Llc | 0.23% | 133,680 | $7,569,005 | $8,173,195 | +$604,190 | +7.98% | |
| Rbf Capital, Llc | 0.40% | 150,000 | $7,560,000 | $9,171,000 | +$1,611,000 | +21.31% | |
| Lazard Asset Management Llc | 0.01% | 147,930 | $7,455,672 | $9,044,440 | +$1,588,768 | +21.31% |
Frequently asked questions about THR
Who owns the most THR stock?
The largest holders of THR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for THERMON GROUP HOLDINGS INC (THR).
Is THR widely held by superinvestors?
Many widely followed stocks like THR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly THR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.