DEC Institutional Ownership & Shareholders
Diversified Energy Co (DEC) is currently held by 181 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $707.86M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Artemis Investment Management Llp is currently the largest disclosed institutional shareholder of DEC tracked by InsiderSet, reporting ownership valued at approximately $82.38M in its September 30, 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 $83.86M, representing an estimated gain of +1.79% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed DEC value among the investors covered in this analysis. Major shareholders include Artemis Investment Management Llp, Blackrock, Inc., Ameriprise Financial Inc, and several other long-term asset managers with concentrated positions in Diversified Energy Co (DEC).
This page ranks the largest institutional DEC 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
181
Total Reported Value
$707.86M
Largest Holder
Artemis Investment Management Llp
Largest Position
$82.38M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
79
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Artemis Investment Management Llp | 0.72% | 6,148,058 | $82,383,410 | $83,859,511 | +$1,476,101 | +1.79% | |
| Blackrock, Inc. | 0.00% | 5,774,418 | $80,033,432 | $78,763,062 | -$1,270,370 | -1.59% | |
| Ameriprise Financial Inc | 0.01% | 4,570,807 | $63,343,546 | $62,345,807 | -$997,739 | -1.58% | |
| State Street Corp | 0.00% | 3,133,776 | $43,434,135 | $42,744,705 | -$689,430 | -1.59% | |
| Jupiter Asset Management Ltd | 0.21% | 3,129,540 | $42,949,948 | $42,686,926 | -$263,022 | -0.61% | |
| Tejara Capital Ltd | 10.42% | 1,828,668 | $25,345,338 | $24,943,032 | -$402,306 | -1.59% | |
| M&G Plc | 0.12% | 1,759,706 | $24,635,884 | $24,002,390 | -$633,494 | -2.57% | |
| Geode Capital Management, Llc | 0.00% | 1,699,673 | $23,562,516 | $23,183,540 | -$378,976 | -1.61% | |
| Man Group Plc | 0.04% | 1,677,344 | $23,019,475 | $22,878,972 | -$140,503 | -0.61% | |
| Citadel Advisors Llc | 0.01% | 1,388,337 | $19,242,351 | $18,936,917 | -$305,434 | -1.59% | |
| Millstreet Capital Management Llc | 5.19% | 1,378,421 | $19,104,915 | $18,801,662 | -$303,253 | -1.59% | |
| American Century Companies Inc | 0.01% | 1,228,790 | $16,853,460 | $16,760,696 | -$92,764 | -0.55% | |
| Barclays Plc | 0.01% | 1,192,263 | $16,524,765 | $16,262,467 | -$262,298 | -1.59% | |
| Ubs Group Ag | 0.00% | 1,179,531 | $16,348,300 | $16,088,803 | -$259,497 | -1.59% | |
| Charles Schwab Investment Management Inc | 0.00% | 817,197 | $11,315,707 | $11,146,567 | -$169,140 | -1.49% | |
| Vanguard Capital Management Llc | 0.00% | 664,462 | $9,209,443 | $9,063,262 | -$146,181 | -1.59% | |
| Bank Of New York Mellon Corp | 0.00% | 654,942 | $9,077,498 | $8,933,409 | -$144,089 | -1.59% | |
| Vanguard Portfolio Management Llc | 0.00% | 607,218 | $8,416,041 | $8,282,454 | -$133,587 | -1.59% | |
| Morgan Stanley | 0.00% | 586,766 | $8,132,584 | $8,003,488 | -$129,096 | -1.59% | |
| First Trust Advisors Lp | 0.00% | 577,408 | $8,002,874 | $7,875,845 | -$127,029 | -1.59% | |
| Northern Trust Corp | 0.00% | 566,257 | $7,848,323 | $7,723,745 | -$124,578 | -1.59% | |
| Pacer Advisors, Inc. | 0.02% | 540,112 | $7,486,000 | $7,367,128 | -$118,872 | -1.59% | |
| Aqr Capital Management Llc | 0.00% | 453,500 | $6,285,468 | $6,185,740 | -$99,728 | -1.59% | |
| Aberdeen Group Plc | 0.01% | 404,163 | $5,601,699 | $5,512,783 | -$88,916 | -1.59% | |
| Prescott Group Capital Management, L.L.C. | 0.46% | 382,058 | $5,108,115 | $5,211,271 | +$103,156 | +2.02% | |
| Wells Fargo & Company/Mn | 0.00% | 365,182 | $5,061,416 | $4,981,082 | -$80,334 | -1.59% | |
| Dimensional Fund Advisors Lp | 0.00% | 363,923 | $5,043,973 | $4,963,910 | -$80,063 | -1.59% | |
| Alyeska Investment Group, L.P. | 0.01% | 357,929 | $4,960,896 | $4,882,152 | -$78,744 | -1.59% | |
| Vanguard Fiduciary Trust Co | 0.00% | 343,316 | $4,758,360 | $4,682,830 | -$75,530 | -1.59% | |
| Victory Capital Management Inc | 0.00% | 269,088 | $3,729,560 | $3,670,360 | -$59,200 | -1.59% | |
| Millennium Management Llc | 0.00% | 267,785 | $3,711,500 | $3,652,587 | -$58,913 | -1.59% | |
| Acadian Asset Management Llc | 0.00% | 263,793 | $3,652,000 | $3,598,137 | -$53,863 | -1.47% | |
| Invesco Ltd. | 0.00% | 254,288 | $3,524,432 | $3,468,488 | -$55,944 | -1.59% | |
| Quantinno Capital Management Lp | 0.00% | 251,559 | $3,486,608 | $3,431,265 | -$55,343 | -1.59% | |
| Bank Of America Corp | 0.00% | 241,261 | $3,343,878 | $3,290,800 | -$53,078 | -1.59% | |
| Sg Americas Securities, Llc | 0.00% | 239,103 | $3,314,000 | $3,261,365 | -$52,635 | -1.59% | |
| Goldman Sachs Group Inc | 0.00% | 227,266 | $3,149,910 | $3,099,908 | -$50,002 | -1.59% | |
| Bnp Paribas Financial Markets | 0.00% | 222,607 | $3,085,333 | $3,036,359 | -$48,974 | -1.59% | |
| Rathbones Group Plc | 0.01% | 218,643 | $2,999,781 | $2,982,291 | -$17,490 | -0.58% | |
| Citigroup Inc | 0.00% | 193,325 | $2,679,484 | $2,636,953 | -$42,531 | -1.59% | |
| Nuveen, Llc | 0.00% | 190,106 | $2,634,870 | $2,593,046 | -$41,824 | -1.59% | |
| Hrt Financial Lp | 0.00% | 178,916 | $2,479,000 | $2,440,414 | -$38,586 | -1.56% | |
| Mraz, Amerine & Associates, Inc. | 0.37% | 178,595 | $2,387,815 | $2,436,036 | +$48,221 | +2.02% | |
| Skylands Capital, Llc | 0.29% | 164,500 | $2,199,365 | $2,243,780 | +$44,415 | +2.02% | |
| Royal Bank Of Canada | 0.00% | 142,394 | $1,973,000 | $1,942,254 | -$30,746 | -1.56% | |
| Swiss National Bank | 0.00% | 141,691 | $1,963,837 | $1,932,665 | -$31,172 | -1.59% | |
| Schonfeld Strategic Advisors Llc | 0.01% | 133,176 | $1,845,818 | $1,816,521 | -$29,297 | -1.59% | |
| D. E. Shaw & Co., Inc. | 0.00% | 126,277 | $1,750,199 | $1,722,418 | -$27,781 | -1.59% | |
| Manufacturers Life Insurance Company, The | 0.00% | 119,393 | $1,654,787 | $1,628,521 | -$26,266 | -1.59% | |
| Two Sigma Investments, Lp | 0.00% | 115,577 | $1,601,897 | $1,576,470 | -$25,427 | -1.59% |
Frequently asked questions about DEC
Who are the largest institutional holders of DEC?
The largest institutional holders of DEC reported in the latest SEC Form 13F filings include Artemis Investment Management Llp, Blackrock, Inc., Ameriprise Financial Inc, State Street Corp, and Jupiter Asset Management Ltd. InsiderSet ranks institutional holders by their latest reported DEC position.
What is DEC institutional ownership?
This page tracks DEC positions reported by institutional investment managers through SEC Form 13F. Diversified Energy Co (DEC) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own DEC?
InsiderSet currently tracks 181 institutional managers reporting DEC holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of DEC shareholders.
How much DEC stock do institutions own?
Institutional investment managers disclosed approximately $707.86M in DEC holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was DEC institutional ownership last updated?
The latest DEC institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional DEC holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its DEC position after the reporting date.
Are institutions buying or selling DEC?
Institutional buying and selling can be analyzed by comparing DEC positions across consecutive 13F reporting periods. InsiderSet's DEC Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View DEC ownership changes.
How has DEC institutional ownership changed over time?
InsiderSet tracks DEC institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.