Thermon Group Holdings, Inc.
US ˙ NYSE ˙ US88362T1034
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityTHR / Thermon Group Holdings, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership577,926 shares
Latest Disclosed Value $ 29,127,471
Citigroup Inc reports 4,861.59% increase in ownership of THR / Thermon Group Holdings, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 577,926 shares of Thermon Group Holdings, Inc. (US:THR) valued at $29,127,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,648 shares of Thermon Group Holdings, Inc.. This represents a change in shares of 4,861.59% during the quarter. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F THERMON GROUP HLDGS COM 88362T103 577,926 566,278 4,861.59 29,127 6,642.36 0.0063
2026-02-13 2025-12-31 13F THERMON GROUP HLDGS COM 88362T103 11,648 -12,404 -51.57 433 -32.71 0.0002
2025-11-10 2025-09-30 13F THERMON GROUP HLDGS COM 88362T103 24,052 -4,245 -15.00 643 -19.14 0.0003
2025-08-11 2025-06-30 13F THERMON GROUP HLDGS COM 88362T103 28,297 -1,006 -3.43 795 -2.70 0.0004
2025-05-12 2025-03-31 13F THERMON GROUP HLDGS COM 88362T103 29,303 1,769 6.42 816 3.03 0.0004
2025-02-12 2024-12-31 13F THERMON GROUP HLDGS COM 88362T103 27,534 3,254 13.40 792 9.39 0.0005
2024-11-12 2024-09-30 13F THERMON GROUP HLDGS COM 88362T103 24,280 16,804 224.77 725 216.16 0.0004
2024-08-12 2024-06-30 13F THERMON GROUP HLDGS COM 88362T103 7,476 1,276 20.58 230 13.37 0.0001
2024-05-10 2024-03-31 13F THERMON GROUP HLDGS COM 88362T103 6,200 -11,824 -65.60 203 -65.59 0.0001
2024-02-09 2023-12-31 13F THERMON GROUP HLDGS COM 88362T103 18,024 10,198 130.31 587 174.30 0.0004
2023-12-06 2023-09-30 13F/A-1 THERMON GROUP HLDGS COM 88362T103 7,826 -7,540 -49.07 215 -47.55 0.0002
2023-11-09 2023-09-30 13F THERMON GROUP HLDGS COM 88362T103 7,826 -7,540 215 0.0001
2023-08-10 2023-06-30 13F THERMON GROUP HLDGS COM 88362T103 15,366 11,712 320.53 409 348.35 0.0003
2023-05-11 2023-03-31 13F THERMON GROUP HLDGS COM 88362T103 3,654 2,597 245.70 91 333.33 0.0001
2023-02-09 2022-12-31 13F THERMON GROUP HLDGS COM 88362T103 1,057 -268 -20.23 21 5.00 0.0000
2022-11-10 2022-09-30 13F THERMON GROUP HLDGS COM 88362T103 1,325 -1,909 -59.03 20 -55.56 0.0000
2022-08-10 2022-06-30 13F THERMON GROUP HLDGS COM 88362T103 3,234 751 30.25 45 12.50 0.0000
2022-05-12 2022-03-31 13F THERMON GROUP HLDGS COM 88362T103 2,483 -6,617 -72.71 40 -74.03 0.0000
2022-02-10 2021-12-31 13F THERMON GROUP HLDGS COM 88362T103 9,100 4,662 105.05 154 100.00 0.0001
2021-11-10 2021-09-30 13F THERMON GROUP HLDGS COM 88362T103 4,438 260 6.22 77 8.45 0.0000
2021-08-10 2021-06-30 13F THERMON GROUP HLDGS COM 88362T103 4,178 1,665 66.26 71 44.90 0.0000
2021-05-13 2021-03-31 13F THERMON GROUP HLDGS COM 88362T103 2,513 -4,124 -62.14 49 -52.88 0.0000
2021-02-11 2020-12-31 13F THERMON GROUP HLDGS COM 88362T103 6,637 4,721 246.40 104 372.73 0.0001
2020-11-12 2020-09-30 13F THERMON GROUP HLDGS COM 88362T103 1,916 -8,341 -81.32 22 -85.23 0.0000
2020-08-12 2020-06-30 13F THERMON GROUP HLDGS COM 88362T103 10,257 -397 -3.73 149 -7.45 0.0001
2020-05-12 2020-03-31 13F THERMON GROUP HLDGS COM 88362T103 10,654 3,395 46.77 161 -17.44 0.0001
2020-02-12 2019-12-31 13F THERMON GROUP HLDGS COM 88362T103 7,259 -4,439 -37.95 195 -27.51 0.0001
2019-11-08 2019-09-30 13F THERMON GROUP HLDGS COM 88362T103 11,698 -440 -3.62 269 -13.50 0.0002
2019-08-12 2019-06-30 13F THERMON GROUP HLDGS COM 88362T103 12,138 1,244 11.42 311 16.48 0.0003
2019-05-13 2019-03-31 13F THERMON GROUP HLDGS COM 88362T103 10,894 13 0.12 267 20.81 0.0003
2019-02-12 2018-12-31 13F THERMON GROUP HLDGS COM 88362T103 10,881 1,528 16.34 221 -8.30 0.0002
2018-11-13 2018-09-30 13F THERMON GROUP HLDGS COM 88362T103 9,353 5,617 150.35 241 183.53 0.0002
2018-08-10 2018-06-30 13F THERMON GROUP HLDGS COM 88362T103 3,736 -1,754 -31.95 85 -30.89 0.0001
2018-05-11 2018-03-31 13F THERMON GROUP HLDGS COM 88362T103 5,490 476 9.49 123 3.36 0.0001
2018-02-12 2017-12-31 13F THERMON GROUP HLDGS COM 88362T103 5,014 4,914 4,914.00 119 5,850.00 0.0001
2017-11-13 2017-09-30 13F THERMON GROUP HLDGS COM 88362T103 100 17 20.48 2 0.00 0.0000
2017-08-11 2017-06-30 13F THERMON GROUP HLDGS COM 88362T103 83 -1,071 -92.81 2 -91.67 0.0000
2017-05-12 2017-03-31 13F THERMON GROUP HLDGS COM 88362T103 1,154 -31,518 -96.47 24 -96.15 0.0000
2017-02-10 2016-12-31 13F THERMON GROUP HLDGS COM 88362T103 32,672 29,597 962.50 623 921.31 0.0006
2016-11-10 2016-09-30 13F THERMON GROUP HLDGS COM 88362T103 3,075 -1,202 -28.10 61 -25.61 0.0001
2016-08-12 2016-06-30 13F THERMON GROUP HLDGS COM 88362T103 4,277 -23,396 -84.54 82 -83.13 0.0001
2016-05-13 2016-03-31 13F THERMON GROUP HLDGS COM 88362T103 27,673 8,146 41.72 486 46.83 0.0005
2016-02-12 2015-12-31 13F THERMON GROUP HLDGS COM 88362T103 19,527 9,980 104.54 331 68.88 0.0003
2015-11-13 2015-09-30 13F THERMON GROUP HLDGS COM 88362T103 9,547 -8,035 -45.70 196 -53.66 0.0002
2015-08-13 2015-06-30 13F THERMON GROUP HLDGS COM 88362T103 17,582 3,364 23.66 423 23.68 0.0004
2015-05-14 2015-03-31 13F THERMON GROUP HLDGS COM 88362T103 14,218 -8,408 -37.16 342 -37.59 0.0003
2015-02-17 2014-12-31 13F THERMON GROUP HLDGS COM 88362T103 22,626 21,491 1,893.48 548 1,857.14 0.0005
2014-11-14 2014-09-30 13F THERMON GROUP HLDGS COM 88362T103 1,135 -196 -14.73 28 -20.00 0.0000
2014-08-14 2014-06-30 13F THERMON GROUP HLDGS COM 88362T103 1,331 -4,859 -78.50 35 -75.52 0.0000
2014-05-15 2014-03-31 13F THERMON GROUP HLDGS COM 88362T103 6,190 -6,406 -50.86 143 -58.43 0.0001
2014-02-14 2013-12-31 13F THERMON GROUP HLDGS COM 88362T103 12,596 12,559 33,943.24 344 34,300.00 0.0003
2013-11-14 2013-09-30 13F THERMON GROUP HLDGS COM 88362T103 37 -127 -77.44 1 -75.00 0.0000
2013-08-14 2013-06-30 13F THERMON GROUP HLDGS COM 88362T103 164 164 4 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.