Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership9,246 shares
Latest Disclosed Value $ 1,828,782
Advisory Services Network, LLC reports 42.94% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 9,246 shares of Diamondback Energy, Inc. (US:FANG) valued at $1,828,766 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 16,204 shares of Diamondback Energy, Inc.. This represents a change in shares of -42.94% during the quarter. The current value of the position is $1,876,383 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 Stock 25278X109 9,246 -6,958 -42.94 1,829 -24.93 0.0169
2026-02-17 2025-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 16,204 -2,050 -11.23 2,436 -6.78 0.0345
2025-11-18 2025-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 18,254 2,843 18.45 2,612 14.01 0.0383
2025-08-19 2025-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 15,411 4,057 35.73 2,291 26.23 0.0369
2025-05-15 2025-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 11,354 -2,919 -20.45 1,815 -22.37 0.0349
2025-02-13 2024-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 14,273 2,386 20.07 2,338 -1.72 0.0436
2024-11-14 2024-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 11,887 0 0.00 2,380 0.00 0.0492
2024-08-13 2024-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 11,887 -6,399 -34.99 2,380 -34.34 0.0492
2024-05-06 2024-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 18,286 -1,552 -7.82 3,624 17.78 0.0804
2024-02-09 2023-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 19,838 800 4.20 3,076 4.34 0.0752
2023-11-14 2023-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 19,038 2,378 14.27 2,949 34.73 0.0792
2023-08-09 2023-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 16,660 2,020 13.80 2,188 10.62 0.0583
2023-05-17 2023-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 14,640 -2,512 -14.65 1,979 -15.69 0.0548
2023-02-13 2022-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 17,152 4,124 31.65 2,346 49.52 0.0719
2022-11-14 2022-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 13,028 1,419 12.22 1,569 11.59 0.0554
2022-08-02 2022-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 11,609 -144 -1.23 1,406 -12.73 0.0481
2022-05-23 2022-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 11,753 11,753 1,611 0.0474
2021-11-05 2021-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 0 -1,961 -100.00 0 -100.00
2021-08-12 2021-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 1,961 1,961 185 0.0058
2021-05-24 2021-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 0 -521 -100.00 0 -100.00
2021-02-09 2020-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 521 -3,699 -87.65 25 -80.31 0.0010
2020-11-16 2020-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 4,220 4,220 709.98 127 408.00 0.0060
2020-08-10 2020-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 0 -3,833 -100.00 0 -100.00
2020-05-15 2020-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 3,833 118 3.18 101 -70.72 0.0066
2020-02-04 2019-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 3,715 -123 -3.20 345 -17.46 0.0181
2019-11-04 2019-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 3,838 0 0.00 418 0.00 0.0256
2019-08-01 2019-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 3,838 76 2.02 418 9.42 0.0256
2019-05-20 2019-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 3,762 -145 -3.71 382 5.52 0.0268
2019-02-15 2018-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 3,907 14 0.36 362 -31.31 0.0316
2018-11-02 2018-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 3,893 685 21.35 527 21.99 0.0385
2018-07-27 2018-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 3,208 277 9.45 432 16.44 0.0329
2018-04-23 2018-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 2,931 -133 -4.34 371 -4.13 0.0296
2018-02-08 2017-12-31 13F DIAMONDBACK ENERGY Stock 25278X109 3,064 216 7.58 387 38.71 0.0337
2017-10-12 2017-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 2,848 2,443 603.21 279 675.00 0.0319
2017-08-17 2017-06-30 13F DIAMONDBACK ENERGY INC COM Stock 25278X109 405 0 0.00 36 -14.29 0.0047
2017-04-28 2017-03-31 13F DIAMONDBACK ENERGY INC COM Stock 25278X109 405 136 50.56 42 61.54 0.0061
2016-10-07 2016-09-30 13F DIAMONDBACK ENERGY Stock 25278X109 269 -334 -55.39 26 -52.73 0.0049
2016-07-27 2016-06-30 13F DIAMONDBACK ENERGY Stock 25278X109 603 475 371.09 55 450.00 0.0125
2016-04-21 2016-03-31 13F DIAMONDBACK ENERGY Stock 25278X109 128 100 357.14 10 400.00 0.0027
2016-01-27 2015-12-31 13F DIAMONDBACK ENERGY INC COM Stock 25278X109 28 28 2 0.0006
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.