Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership2,289,876 shares
Latest Disclosed Value $ 452,937,616
Dimensional Fund Advisors Lp reports 2.39% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 2,289,876 shares of Diamondback Energy, Inc. (US:FANG) valued at $452,914,574 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,345,889 shares of Diamondback Energy, Inc.. This represents a change in shares of -2.39% during the quarter. The current value of the position is $441,075,915 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)
2026-05-07 2026-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,289,876 -56,013 -2.39 452,938 28.43 0.0941
2026-02-12 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,345,889 -9,591 -0.41 352,677 4.63 0.0740
2025-11-12 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 2,355,480 198,919 9.22 337,078 13.74 0.0723
2025-08-12 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 2,156,561 -59,042 -2.66 296,363 -16.32 0.0686
2025-05-13 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,215,603 1,213 0.05 354,177 -2.36 0.0880
2025-02-13 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,214,390 -171,785 -7.20 362,737 -11.82 0.0871
2024-11-07 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 2,386,175 103,618 4.54 411,343 -9.98 0.0998
2024-08-09 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 2,282,557 87,288 3.98 456,930 5.03 0.1193
2024-05-10 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,195,269 -18,362 -0.83 435,036 26.72 0.1178
2024-02-07 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,213,631 188,590 9.31 343,296 9.44 0.1002
2023-11-09 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 2,025,041 -30,324 -1.48 313,694 16.19 0.1029
2023-08-09 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 2,055,365 -1,367 -0.07 269,982 -2.88 0.0860
2023-05-12 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,056,732 347,833 20.35 277,983 119,206.01 0.0936
2023-02-09 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,708,899 170,829 11.11 234 -99.87 0.0691
2022-11-10 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,538,070 393,268 34.35 185,292 33.61 0.0711
2022-08-12 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,144,802 283,331 32.89 138,683 17.41 0.0497
2022-05-13 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 861,471 -30,680 -3.44 118,114 22.77 0.0364
2022-02-09 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 892,151 9,130 1.03 96,209 15.07 0.0291
2021-11-12 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 883,021 -48,308 -5.19 83,609 -4.37 0.0269
2021-08-12 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 931,329 -29,376 -3.06 87,430 23.70 0.0277
2021-05-14 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 960,705 46,820 5.12 70,678 59.77 0.0234
2021-03-08 2020-12-31 13F/A-2 DIAMONDBACK ENERGY COM 25278X109 913,885 -49,701 -5.16 44,238 52.39 0.0160
2021-02-11 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 913,885 -49,701 44,238 15,976.4142
2020-11-12 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 963,586 20,670 2.19 29,029 -26.37 0.0123
2020-08-13 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 942,916 -102,913 -9.84 39,427 43.98 0.0173
2020-05-14 2020-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,045,829 -451,731 -30.16 27,383 -80.31 0.0143
2020-02-14 2019-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,497,560 88,180 6.26 139,043 9.72 0.0507
2019-11-12 2019-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,409,380 -3,719 -0.26 126,720 -17.70 0.0492
2019-08-13 2019-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,413,099 -21,346 -1.49 153,974 5.71 0.0598
2019-08-12 2019-03-31 13F/A-2 DIAMONDBACK ENERGY COM 25278X109 1,434,445 59,980 4.36 145,655 14.32 0.0580
2019-05-10 2019-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,434,445 59,980 145,655
2019-02-26 2018-12-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 1,374,465 517,292 60.35 127,413 9.96 0.0577
2019-02-13 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,374,465 517,292 127,413
2018-11-13 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 857,173 123,658 16.86 115,869 20.07 0.0441
2018-08-10 2018-06-30 13F DIAMONDBACK ENERGY COM 25278X109 733,515 109,099 17.47 96,505 22.16 0.0385
2018-05-11 2018-03-31 13F DIAMONDBACK ENERGY COM 25278X109 624,416 91,767 17.23 79,001 17.48 0.0329
2018-02-12 2017-12-31 13F DIAMONDBACK ENERGY COM 25278X109 532,649 135,689 34.18 67,245 72.94 0.0279
2017-11-13 2017-09-30 13F DIAMONDBACK ENERGY COM 25278X109 396,960 13,808 3.60 38,883 14.29 0.0170
2017-08-11 2017-06-30 13F DIAMONDBACK ENERGY COM 25278X109 383,152 -381 -0.10 34,022 -14.46 0.0157
2017-05-12 2017-03-31 13F DIAMONDBACK ENERGY COM 25278X109 383,533 13,011 3.51 39,773 6.21 0.0190
2017-02-09 2016-12-31 13F DIAMONDBACK ENERGY COM 25278X109 370,522 -32,192 -7.99 37,447 -3.68 0.0187
2016-11-10 2016-09-30 13F DIAMONDBACK ENERGY COM 25278X109 402,714 2,202 0.55 38,877 6.42 0.0210
2016-08-09 2016-06-30 13F DIAMONDBACK ENERGY COM 25278X109 400,512 -28,445 -6.63 36,530 10.33 0.0210
2016-05-13 2016-03-31 13F DIAMONDBACK ENERGY COM 25278X109 428,957 -33,134 -7.17 33,109 7.11 0.0198
2016-02-10 2015-12-31 13F DIAMONDBACK ENERGY COM 25278X109 462,091 1,159 0.25 30,912 3.82 0.0193
2015-11-13 2015-09-30 13F DIAMONDBACK ENERGY COM 25278X109 460,932 2,095 0.46 29,774 -13.92 0.0195
2015-08-14 2015-06-30 13F DIAMONDBACK ENERGY COM 25278X109 458,837 145,719 46.54 34,588 43.76 0.0212
2015-05-14 2015-03-31 13F DIAMONDBACK ENERGY COM 25278X109 313,118 82,967 36.05 24,060 74.87 0.0152
2015-02-06 2014-12-31 13F DIAMONDBACK ENERGY COM 25278X109 230,151 78,605 51.87 13,759 21.39 0.0090
2014-11-13 2014-09-30 13F DIAMONDBACK ENERGY COM 25278X109 151,546 75,432 99.10 11,335 67.70 0.0080
2014-08-08 2014-06-30 13F DIAMONDBACK ENERGY COM 25278X109 76,114 30,318 66.20 6,759 119.23 0.0047
2014-05-14 2014-03-31 13F DIAMONDBACK ENERGY COM 25278X109 45,796 45,796 3,083 0.0023
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.