Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership692,625 shares
Latest Disclosed Value $ 136,994,359
First Trust Advisors Lp reports 61.27% increase in ownership of FANG / Diamondback Energy, Inc.

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 692,625 shares of Diamondback Energy, Inc. (US:FANG) valued at $136,994,299 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 429,474 shares of Diamondback Energy, Inc.. This represents a change in shares of 61.27% during the quarter. The current value of the position is $133,413,428 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)
2026-05-13 2026-03-31 13F DIAMONDBACK ENERGY COM 25278X109 692,625 263,151 61.27 136,994 112.19 0.0976
2026-02-13 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 429,474 -263,012 -37.98 64,563 -34.85 0.0469
2025-11-12 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 692,486 -312,723 -31.11 99,095 -28.25 0.0736
2025-08-13 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,005,209 -25,364 -2.46 138,116 -16.18 0.1111
2025-05-14 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,030,573 383,039 59.15 164,768 55.32 0.1459
2025-02-13 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 647,534 -180,960 -21.84 106,086 -25.73 0.0935
2024-11-13 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 828,494 119,114 16.79 142,832 0.58 0.1361
2024-08-13 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 709,380 177,926 33.48 142,011 34.84 0.1448
2024-05-13 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 531,454 -71,376 -11.84 105,318 12.66 0.1069
2024-02-13 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 602,830 74,886 14.18 93,487 14.33 0.1020
2023-11-13 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 527,944 -22,563 -4.10 81,768 13.07 0.0969
2023-08-14 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 550,507 -88,409 -13.84 72,315 -16.27 0.0822
2023-05-15 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 638,916 -468,430 -42.30 86,362 -42.98 0.0997
2023-02-09 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,107,346 267,465 31.85 151,461 49.71 0.1801
2022-11-14 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 839,881 -196,215 -18.94 101,172 -19.40 0.1312
2022-08-12 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,036,096 113,853 12.35 125,523 -0.71 0.1550
2022-05-13 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 922,243 409,637 79.91 126,421 128.67 0.1293
2022-02-08 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 512,606 159,868 45.32 55,285 65.55 0.0538
2021-11-15 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 352,738 30,952 9.62 33,394 10.53 0.0359
2021-10-12 2021-06-30 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 321,786 16,481 5.40 30,212 34.65 0.0327
2021-08-16 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 321,786 16,481 30,212 0.0312
2021-05-14 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 305,305 109,967 56.30 22,437 137.33 0.0272
2021-02-02 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 195,338 -189,473 -49.24 9,454 -18.44 0.0125
2020-11-05 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 384,811 -509,958 -56.99 11,591 -69.02 0.0186
2020-07-22 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 894,769 859,310 2,423.39 37,419 3,927.88 0.0649
2020-05-06 2020-03-31 13F DIAMONDBACK ENERGY COM 25278X109 35,459 4,908 16.06 929 -67.25 0.0021
2020-02-03 2019-12-31 13F DIAMONDBACK ENERGY COM 25278X109 30,551 7,137 30.48 2,837 34.77 0.0048
2019-11-04 2019-09-30 13F DIAMONDBACK ENERGY COM 25278X109 23,414 -16,994 -42.06 2,105 -52.19 0.0040
2019-07-30 2019-06-30 13F DIAMONDBACK ENERGY COM 25278X109 40,408 5,323 15.17 4,403 23.61 0.0083
2019-06-19 2019-03-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 35,085 -137,770 -79.70 3,562 -77.77 0.0071
2019-05-09 2019-03-31 13F DIAMONDBACK ENERGY COM 25278X109 35,085 -137,770 3,562
2019-02-07 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 172,855 15,433 9.80 16,024 -24.71 0.0380
2018-10-25 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 157,422 39,202 33.16 21,282 36.83 0.0396
2018-08-02 2018-06-30 13F DIAMONDBACK ENERGY COM 25278X109 118,220 -43,749 -27.01 15,554 -24.10 0.0323
2018-04-23 2018-03-31 13F DIAMONDBACK ENERGY COM 25278X109 161,969 69,616 75.38 20,492 75.75 0.0471
2018-02-08 2017-12-31 13F DIAMONDBACK ENERGY COM 25278X109 92,353 65,820 248.07 11,660 348.63 0.0278
2017-10-24 2017-09-30 13F DIAMONDBACK ENERGY COM 25278X109 26,533 -50,619 -65.61 2,599 -62.07 0.0067
2017-08-02 2017-06-30 13F DIAMONDBACK ENERGY COM 25278X109 77,152 -107,262 -58.16 6,852 -64.17 0.0183
2017-05-02 2017-03-31 13F DIAMONDBACK ENERGY COM 25278X109 184,414 -73,818 -28.59 19,126 -26.71 0.0530
2017-02-06 2016-12-31 13F DIAMONDBACK ENERGY COM 25278X109 258,232 -123,211 -32.30 26,097 -29.13 0.0777
2016-11-01 2016-09-30 13F DIAMONDBACK ENERGY COM 25278X109 381,443 334,278 708.74 36,825 756.00 0.1099
2016-08-04 2016-06-30 13F DIAMONDBACK ENERGY COM 25278X109 47,165 -59,140 -55.63 4,302 -47.57 0.0135
2016-05-10 2016-03-31 13F DIAMONDBACK ENERGY COM 25278X109 106,305 58,103 120.54 8,205 154.42 0.0264
2016-05-04 2015-12-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 48,202 -44,720 -48.13 3,225 -46.28 0.0084
2016-02-03 2015-12-31 13F DIAMONDBACK ENERGY COM 25278X109 48,202 3,225
2015-11-05 2015-09-30 13F DIAMONDBACK ENERGY COM 25278X109 92,922 50,297 118.00 6,003 86.83 0.0174
2015-08-04 2015-06-30 13F DIAMONDBACK ENERGY COM 25278X109 42,625 11,347 36.28 3,213 33.71 0.0083
2015-05-04 2015-03-31 13F DIAMONDBACK ENERGY COM 25278X109 31,278 31,278 2,403 0.0071
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.