Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionHancock Whitney Corp
Latest Disclosed Ownership13,755 shares
Latest Disclosed Value $ 2,828,354
Hancock Whitney Corp reports 3.91% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 13,755 shares of Diamondback Energy, Inc. (US:FANG) valued at $2,720,601 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 14,314 shares of Diamondback Energy, Inc.. This represents a change in shares of -3.91% during the quarter. The current value of the position is $2,896,665 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 13,755 -559 -3.91 2,828 31.47 0.0492
2026-02-17 2025-12-31 13F DIAMONDBACK ENE COM 25278X109 14,314 -52,133 -78.46 2,152 -77.38 0.0388
2025-11-17 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 66,447 -2,442 -3.54 9,509 0.45 0.1730
2025-08-14 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 68,889 59,714 650.83 9,465 545.63 0.1809
2025-05-15 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 9,175 358 4.06 1,467 1.52 0.0479
2025-02-14 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 8,817 2,312 35.54 1,444 28.81 0.0457
2024-11-13 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 6,505 98 1.53 1,121 -12.56 0.0361
2024-08-13 2024-06-30 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 6,407 2,724 73.96 1,283 75.86 0.0435
2024-05-16 2024-03-31 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 3,683 16 0.44 730 28.35 0.0252
2024-02-14 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 3,667 -102 -2.71 569 -2.57 0.0211
2023-11-13 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 3,769 -440 -10.45 584 5.42 0.0241
2023-11-13 2023-06-30 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 4,209 37 0.89 553 -1.95 0.0217
2023-08-10 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 4,209 37 1 0.0217
2023-11-13 2023-03-31 13F/A-2 DIAMONDBACK ENERGY COM 25278X109 4,172 -179 -4.11 564 -5.21 0.0226
2023-05-16 2023-03-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 4,172 -179 1 0.0121
2023-05-15 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 4,351 0 1 0.0123
2023-11-13 2022-12-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 4,351 -219 -4.79 595 7.99 0.0230
2023-02-03 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 4,351 -219 1 0.0230
2022-10-26 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 4,570 -19,926 -81.34 551 -81.43 0.0236
2022-08-08 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 24,496 -258 -1.04 2,967 -12.56 0.1187
2022-05-12 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 24,754 1,199 5.09 3,393 33.53 0.1155
2022-01-25 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 23,555 -160 -0.67 2,541 13.18 0.0799
2021-11-04 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 23,715 -349 -1.45 2,245 -0.62 0.0785
2021-08-09 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 24,064 -248 -1.02 2,259 26.41 0.0721
2021-05-14 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 24,312 -805 -3.21 1,787 46.96 0.0607
2021-02-09 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 25,117 490 1.99 1,216 63.88 0.0406
2020-11-05 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 24,627 -10,104 -29.09 742 -48.90 0.0274
2020-07-30 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 34,731 -16,194 -31.80 1,452 8.85 0.0557
2020-05-08 2020-03-31 13F DIAMONDBACK ENERGY COM 25278X109 50,925 2,928 6.10 1,334 -70.07 0.0523
2020-02-06 2019-12-31 13F DIAMONDBACK ENERGY COM 25278X109 47,997 -3,896 -7.51 4,457 -4.48 0.1436
2019-10-29 2019-09-30 13F DIAMONDBACK ENERGY COM 25278X109 51,893 -1,575 -2.95 4,666 -19.91 0.1530
2019-08-29 2019-06-30 13F DIAMONDBACK ENERGY COM 25278X109 53,468 -8,792 -14.12 5,826 -7.83 0.1865
2019-05-13 2019-03-31 13F DIAMONDBACK ENERGY COM 25278X109 62,260 82 0.13 6,321 9.66 0.2027
2019-02-14 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 62,178 -7,538 -10.81 5,764 -38.84 0.1948
2018-11-14 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 69,716 -955 -1.35 9,425 1.37 0.2668
2018-08-14 2018-06-30 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 70,671 -15,116 -17.62 9,298 -14.34 0.4281
2018-05-15 2018-03-31 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 85,787 209 0.24 10,854 0.46 0.4865
2018-02-12 2017-12-31 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 85,578 -30,195 -26.08 10,804 -4.74 0.4473
2017-11-14 2017-09-30 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 115,773 20 0.02 11,341 10.32 0.4805
2017-08-11 2017-06-30 13F DIAMONDBACK ENERGY COMMON STOCK 25278X109 115,753 58 0.05 10,280 -14.33 0.4345
2017-05-09 2017-03-31 13F DIAMONDBACK ENERGY COM 25278X109 115,695 -6 -0.01 11,999 2.62 0.5002
2017-02-14 2016-12-31 13F DIAMONDBACK ENERGY COM 25278X109 115,701 134 0.12 11,693 4.80 0.4348
2016-11-08 2016-09-30 13F DIAMONDBACK ENERGY COM 25278X109 115,567 -693 -0.60 11,157 5.22 0.4414
2016-08-09 2016-06-30 13F DIAMONDBACK ENERGY COM 25278X109 116,260 290 0.25 10,604 18.47 0.4422
2016-06-07 2016-03-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 115,970 850 0.74 8,951 16.22 0.3760
2016-05-13 2016-03-31 13F DIAMONDBACK ENERGY COM 25278X109 115,970 8,951
2016-02-12 2015-12-31 13F DIAMONDBACK ENERGY COM 25278X109 115,120 0 0.00 7,702 3.56 0.3227
2015-11-16 2015-09-30 13F DIAMONDBACK ENERGY COM 25278X109 115,120 115,120 0.00 7,437 0.3104
2015-05-14 2015-03-31 13F DIAMONDBACK ENERGY COM 25278X109 0 -123,160 -100.00 0 -100.00
2015-02-17 2014-12-31 13F DIAMONDBACK ENERGY COM 25278X109 123,160 2,060 1.70 7,363 -18.69 0.2797
2014-11-13 2014-09-30 13F DIAMONDBACK ENERGY COM 25278X109 121,100 0 0.00 9,056 -15.79 0.3446
2014-08-14 2014-06-30 13F DIAMONDBACK ENERGY COM 25278X109 121,100 0 0.00 10,754 31.93 0.3897
2014-05-15 2014-03-31 13F DIAMONDBACK ENERGY COM 25278X109 121,100 121,100 8,151 0.3178
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.