Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionFIL Ltd
Latest Disclosed Ownership1,668,889 shares
Latest Disclosed Value $ 330,089,556
FIL Ltd reports 3.45% increase in ownership of FANG / Diamondback Energy, Inc.

On May 15, 2026 - FIL Ltd filed a 13F-HR form disclosing ownership of 1,668,889 shares of Diamondback Energy, Inc. (US:FANG) valued at $330,089,555 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,613,208 shares of Diamondback Energy, Inc.. This represents a change in shares of 3.45% during the quarter. The current value of the position is $351,451,335 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 1,668,889 55,681 3.45 330,090 36.11 0.1425
2026-02-17 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,613,208 -39,455 -2.39 242,514 2.54 0.1815
2025-11-13 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,652,663 -162,367 -8.95 236,496 -5.17 0.1858
2025-08-14 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,815,030 446,350 32.61 249,385 13.97 0.2130
2025-05-12 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,368,680 118,959 9.52 218,825 6.88 0.2079
2025-02-13 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,249,721 82,482 7.07 204,742 1.74 0.1913
2024-11-13 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,167,239 522,188 80.95 201,232 55.83 0.1824
2024-08-13 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 645,051 321,775 99.54 129,133 101.57 0.1277
2024-05-13 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 323,276 160,568 98.68 64,064 153.90 0.0635
2024-02-13 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 162,708 98,172 152.12 25,233 152.45 0.0265
2023-11-13 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 64,536 14,590 29.21 9,995 52.36 0.0118
2023-08-11 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 49,946 18,537 59.02 6,561 54.53 0.0074
2023-05-11 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 31,409 -164 -0.52 4,246 -1.69 0.0049
2023-02-13 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 31,573 2,108 7.15 4,319 21.63 0.0052
2022-11-10 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 29,465 -66,265 -69.22 3,550 -69.39 0.0046
2022-08-12 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 95,730 -32,588 -25.40 11,597 -34.07 0.0138
2022-05-13 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 128,318 -20,700 -13.89 17,589 9.44 0.0180
2022-02-14 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 149,018 -109,798 -42.42 16,072 -34.40 0.0165
2021-11-15 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 258,816 -121,132 -31.88 24,501 -31.32 0.0272
2021-08-13 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 379,948 43,988 13.09 35,673 44.48 0.0383
2021-05-14 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 335,960 325,908 3,242.22 24,690 4,969.82 0.0281
2021-03-23 2020-12-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 10,052 -203 -1.98 487 57.61 0.0006
2021-02-08 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 10,052 -203 487 235.5389
2020-11-13 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 10,255 0 0.00 309 -27.97 0.0004
2020-08-13 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 10,255 -363,444 -97.26 429 -95.62 0.0006
2020-05-14 2020-03-31 13F DIAMONDBACK ENERGY COM 25278X109 373,699 -938,428 -71.52 9,791 -91.96 0.0161
2020-02-07 2019-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,312,127 -21,982 -1.65 121,844 1.58 0.1689
2019-11-13 2019-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,334,109 26,230 2.01 119,950 -15.84 0.1814
2019-08-13 2019-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,307,879 95,016 7.83 142,519 15.74 0.2148
2019-05-13 2019-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,212,863 263,178 27.71 123,142 39.88 0.1929
2019-02-13 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 949,685 273,989 40.55 88,036 -3.63 0.1562
2018-11-09 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 675,696 428,130 172.94 91,348 180.45 0.1351
2018-08-10 2018-06-30 13F DIAMONDBACK ENERGY COM 25278X109 247,566 26,452 11.96 32,572 16.43 0.0491
2018-05-14 2018-03-31 13F DIAMONDBACK ENERGY COM 25278X109 221,114 -17,729 -7.42 27,976 -7.22 0.0769
2018-02-12 2017-12-31 13F DIAMONDBACK ENERGY COM 25278X109 238,843 31,721 15.32 30,154 48.62 0.0839
2017-11-13 2017-09-30 13F DIAMONDBACK ENERGY COM 25278X109 207,122 -102,476 -33.10 20,290 -26.20 0.0582
2017-08-29 2017-06-30 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 309,598 -211,860 -40.63 27,495 -49.16 0.0793
2017-08-11 2017-06-30 13F DIAMONDBACK ENERGY COM 25278X109 309,598 -211,860 27,495
2017-05-11 2017-03-31 13F DIAMONDBACK ENERGY COM 25278X109 521,458 -3,201 -0.61 54,083 2.00 0.1521
2017-02-10 2016-12-31 13F DIAMONDBACK ENERGY COM 25278X109 524,659 242,860 86.18 53,022 94.90 0.1555
2016-11-14 2016-09-30 13F DIAMONDBACK ENERGY COM 25278X109 281,799 -190,891 -40.38 27,205 -36.90 0.0814
2016-08-11 2016-06-30 13F DIAMONDBACK ENERGY COM 25278X109 472,690 -330,552 -41.15 43,114 -30.45 0.1373
2016-05-16 2016-03-31 13F DIAMONDBACK ENERGY COM 25278X109 803,242 79,649 11.01 61,994 28.07 0.1919
2016-02-12 2015-12-31 13F DIAMONDBACK ENERGY COM 25278X109 723,593 1,356 0.19 48,408 3.76 0.1473
2015-11-10 2015-09-30 13F DIAMONDBACK ENERGY COM 25278X109 722,237 119,748 19.88 46,656 2.73 0.1623
2015-08-13 2015-06-30 13F DIAMONDBACK ENERGY COM 25278X109 602,489 67,974 12.72 45,415 10.57 0.1448
2015-05-14 2015-03-31 13F DIAMONDBACK ENERGY COM 25278X109 534,515 534,515 41,072 0.1323
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.