Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionX-Square Capital, LLC
Latest Disclosed Ownership1,879 shares
Latest Disclosed Value $ 372
X-Square Capital, LLC reports 37.53% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 15, 2026 - X-Square Capital, LLC filed a 13F-HR form disclosing ownership of 1,879 shares of Diamondback Energy, Inc. (US:FANG) valued at $371,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 3,008 shares of Diamondback Energy, Inc.. The current value of the position is $395,699 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 CL A 25278X109 1,879 -1,129 -37.53 0 0.1254
2026-02-11 2025-12-31 13F DIAMONDBACK ENERGY CL A 25278X109 3,008 -3 -0.10 0 0.1481
2025-11-10 2025-09-30 13F DIAMONDBACK ENERGY CL A 25278X109 3,011 18 0.60 0 0.1346
2025-08-05 2025-06-30 13F DIAMONDBACK ENERGY CL A 25278X109 2,993 -15 -0.50 0 0.1478
2025-05-09 2025-03-31 13F DIAMONDBACK ENERGY CL A 25278X109 3,008 -133 -4.23 0 0.2068
2025-02-12 2024-12-31 13F DIAMONDBACK ENERGY CL A 25278X109 3,141 8 0.26 1 0.2117
2024-10-22 2024-09-30 13F DIAMONDBACK ENERGY CL A 25278X109 3,133 -102 -3.15 1 0.2373
2024-08-06 2024-06-30 13F DIAMONDBACK ENERGY CL A 25278X109 3,235 -5,569 -63.26 1 -100.00 0.3005
2024-05-14 2024-03-31 13F DIAMONDBACK ENERGY CL A 25278X109 8,804 160 1.85 2 0.00 0.8311
2024-02-09 2023-12-31 13F DIAMONDBACK ENERGY CL A 25278X109 8,644 -5,263 -37.84 1 0.00 0.7399
2023-11-13 2023-09-30 13F Diamondback Energy CL A 25278X109 13,907 0 0.00 2 0.00 1.2277
2023-08-14 2023-06-30 13F Diamondback Energy CL A 25278X109 13,907 -356 -2.50 2 0.00 1.2277
2023-05-11 2023-03-31 13F DIAMONDBACK ENERGY CL A 25278X109 14,263 -4,026 -22.01 2 -50.00 1.1371
2023-02-02 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 18,289 368 2.05 3 -99.91 1.4248
2022-11-04 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 17,921 -577 -3.12 2,159 -3.66 1.3714
2022-08-05 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 18,498 4,266 29.97 2,241 14.86 1.3484
2022-05-12 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 14,232 -22,298 -61.04 1,951 -50.48 1.0140
2022-02-14 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 36,530 -1,215 -3.22 3,940 9.02 1.9799
2021-11-12 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 37,745 2,715 7.75 3,614 10.05 1.8684
2021-08-16 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 35,030 5,277 17.74 3,284 50.16 1.5593
2021-05-13 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 29,753 -947 -3.08 2,187 47.17 1.0107
2021-02-12 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 30,700 30,700 1,486 0.8018
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.