Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionEarnest Partners Llc
Latest Disclosed Ownership438,571 shares
Latest Disclosed Value $ 86,744,958
Earnest Partners Llc reports 0.66% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 15, 2026 - Earnest Partners Llc filed a 13F-HR form disclosing ownership of 438,571 shares of Diamondback Energy, Inc. (US:FANG) valued at $86,744,958 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 441,467 shares of Diamondback Energy, Inc.. This represents a change in shares of -0.66% during the quarter. The current value of the position is $84,477,546 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)
2026-05-15 2026-03-31 13F DIAMONDBACK ENERGY COM 25278X109 438,571 -2,896 -0.66 86,745 30.71 0.3577
2026-02-12 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 441,467 -13,128 -2.89 66,366 2.02 0.2844
2025-11-14 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 454,595 -6,879 -1.49 65,053 2.60 0.2822
2025-08-15 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 461,474 -1,962 -0.42 63,407 -14.42 0.2858
2025-05-14 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 463,436 202,752 77.78 74,094 73.49 0.3548
2025-02-14 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 260,684 -40,890 -13.56 42,708 -17.86 0.1909
2024-11-14 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 301,574 -3,070 -1.01 51,991 -14.75 0.2264
2024-08-14 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 304,644 65 0.02 60,987 1.04 0.2851
2024-05-15 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 304,579 -1,889 -0.62 60,358 27.00 0.2763
2024-02-14 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 306,468 -7,276 -2.32 47,527 -2.19 0.2373
2023-11-14 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 313,744 31,695 11.24 48,593 31.16 0.2803
2023-08-07 2023-06-30 13F DIAMONDBACK ENER COM 25278X109 282,049 29,231 11.56 37,050 8.42 0.2071
2023-05-15 2023-03-31 13F DIAMONDBACK ENER COM 25278X109 252,818 20,336 8.75 34,173 7.47 0.1976
2023-02-14 2022-12-31 13F DIAMONDBACK ENER COM 25278X109 232,482 -8,784 -3.64 31,799 9.41 0.1949
2022-11-14 2022-09-30 13F DIAMONDBACK ENER COM 25278X109 241,266 62,557 35.00 29,063 34.23 0.1952
2022-08-12 2022-06-30 13F DIAMONDBACK ENER COM 25278X109 178,709 -9,176 -4.88 21,651 -15.93 0.1442
2022-05-16 2022-03-31 13F DIAMONDBACK ENER COM 25278X109 187,885 -9,748 -4.93 25,755 20.83 0.1525
2022-02-07 2021-12-31 13F DIAMONDBACK ENER COM 25278X109 197,633 -4,203 -2.08 21,315 11.55 0.1229
2021-11-15 2021-09-30 13F DIAMONDBACK ENER COM 25278X109 201,836 3,413 1.72 19,108 2.57 0.1168
2021-08-16 2021-06-30 13F DIAMONDBACK ENER COM 25278X109 198,423 -722 -0.36 18,630 27.30 0.1095
2021-05-17 2021-03-31 13F DIAMONDBACK ENER COM 25278X109 199,145 -93,141 -31.87 14,635 3.45 0.0874
2021-02-16 2020-12-31 13F DIAMONDBACK ENER COM 25278X109 292,286 55,509 23.44 14,147 98.36 0.0977
2020-11-16 2020-09-30 13F DIAMONDBACK ENER COM 25278X109 236,777 -1,083 -0.46 7,132 -28.30 0.0615
2020-08-13 2020-06-30 13F DIAMONDBACK ENER COM 25278X109 237,860 166,120 231.56 9,947 429.10 0.0940
2020-05-14 2020-03-31 13F DIAMONDBACK ENER COM 25278X109 71,740 4,314 6.40 1,880 -69.97 0.0212
2020-02-07 2019-12-31 13F DIAMONDBACK ENER COM 25278X109 67,426 4,628 7.37 6,261 10.89 0.0492
2019-11-14 2019-09-30 13F DIAMONDBACK ENER COM 25278X109 62,798 8,913 16.54 5,646 -3.85 0.0510
2019-08-13 2019-06-30 13F DIAMONDBACK ENER COM 25278X109 53,885 6,528 13.78 5,872 22.13 0.0531
2019-05-15 2019-03-31 13F DIAMONDBACK ENER COM 25278X109 47,357 -1,744 -3.55 4,808 5.62 0.0459
2019-02-14 2018-12-31 13F DIAMONDBACK ENER COM 25278X109 49,101 49,022 62,053.16 4,552 41,281.82 0.0496
2018-11-14 2018-09-30 13F DIAMONDBACK ENER COM 25278X109 79 0 0.00 11 10.00 0.0001
2018-08-13 2018-06-30 13F DIAMONDBACK ENER COM 25278X109 79 0 0.00 10 0.00 0.0001
2018-05-15 2018-03-31 13F DIAMONDBACK ENER COM 25278X109 79 0 0.00 10 0.00 0.0001
2018-02-14 2017-12-31 13F DIAMONDBACK ENER COM 25278X109 79 79 10 0.0001
2017-05-15 2017-03-31 13F DIAMONDBACK ENER COM 25278X109 0 -79 -100.00 0 -100.00
2017-02-14 2016-12-31 13F DIAMONDBACK ENER COM 25278X109 79 79 8 0.0001
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.