Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership4,584 shares
Latest Disclosed Value $ 906,670
Quadrant Capital Group Llc reports 2.25% increase in ownership of FANG / Diamondback Energy, Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 4,584 shares of Diamondback Energy, Inc. (US:FANG) valued at $906,669 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 4,483 shares of Diamondback Energy, Inc.. This represents a change in shares of 2.25% during the quarter. The current value of the position is $882,970 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/A-1 DIAMONDBACK ENERGY COM 25278X109 4,584 101 2.25 907 34.62 0.0271
2026-05-11 2026-03-31 13F DIAMONDBACK ENERGY COM 25278X109 4,584 101 49 0.0369
2026-02-12 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 4,483 96 2.19 674 7.34 0.0204
2025-11-13 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 4,387 -1,476 -25.17 628 -22.11 0.0204
2025-08-13 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 5,863 -484 -7.63 806 -20.61 0.0290
2025-05-13 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 6,347 4,135 186.93 1,015 180.11 0.0377
2025-02-13 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,212 35 1.61 362 -3.47 0.0249
2024-11-12 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 2,177 10 0.46 375 -13.39 0.0261
2024-08-12 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 2,167 67 3.19 434 4.09 0.0322
2024-05-15 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,100 86 4.27 416 33.33 0.0329
2024-02-08 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,014 106 5.56 312 5.76 0.0268
2023-11-14 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,908 129 7.25 296 26.61 0.0296
2023-08-10 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,779 -624 -25.97 234 -28.09 0.0232
2023-05-11 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,403 766 46.79 325 45.29 0.0338
2023-02-13 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,637 104 6.78 224 20.54 0.0254
2022-11-10 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,533 -127 -7.65 185 -7.96 0.0245
2022-08-09 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,660 98 6.27 201 -6.07 0.0270
2022-05-06 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,562 12 0.77 214 28.14 0.0259
2022-02-01 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,550 264 20.53 167 36.89 0.0199
2021-11-12 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,286 119 10.20 122 10.91 0.0170
2021-08-09 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,167 95 8.86 110 39.24 0.0160
2021-05-12 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 1,072 10 0.94 79 54.90 0.0128
2021-02-16 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 1,062 -664 -38.47 51 -1.92 0.0095
2020-11-13 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 1,726 359 26.26 52 -8.77 0.0113
2020-08-13 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 1,367 410 42.84 57 128.00 0.0126
2020-05-15 2020-03-31 13F Diamondback Energy Com 25278X109 957 -767 -44.49 25 -83.87 0.0042
2020-03-19 2019-12-31 13F/A-1 Diamondback Energy Com 25278X109 1,724 1,252 265.25 155 297.44 0.0187
2020-02-03 2019-12-31 13F Diamondback Energy Com 25278X109 1,724 1,252 155 523.7652
2019-10-24 2019-09-30 13F Diamondback Energy COM 25278X109 472 -702 -59.80 39 -67.77 0.0060
2019-07-24 2019-06-30 13F Diamondback Energy COM 25278X109 1,174 210 21.78 121 28.72 0.0191
2019-04-29 2019-03-31 13F Diamondback Energy COM 25278X109 964 632 190.36 94 235.71 0.0165
2019-01-17 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 332 189 132.17 28 55.56 0.0075
2018-10-29 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 143 41 40.20 18 50.00 0.0051
2018-08-08 2018-06-30 13F DIAMONDBACK ENERGY COM 25278X109 102 -13 -11.30 12 -7.69 0.0042
2018-05-10 2018-03-31 13F DIAMONDBACK ENERGY COM 25278X109 115 13 12.75 13 8.33 0.0047
2018-01-31 2017-12-31 13F Diamondback Energy COM 25278X109 102 0 0.00 12 33.33 0.0048
2017-10-13 2017-09-30 13F Diamondback Energy COM 25278X109 102 0 0.00 9 12.50 0.0037
2017-08-14 2017-06-30 13F Diamondback Energy COM 25278X109 102 -84 -45.16 8 -55.56 0.0035
2017-04-10 2017-03-31 13F Diamondback Energy COM 25278X109 186 -155 -45.45 18 -45.45 0.0079
2017-01-11 2016-12-31 13F Diamondback Energy COM 25278X109 341 -8 -2.29 33 3.13 0.0166
2016-10-25 2016-09-30 13F Diamondback Energy COM 25278X109 349 0 0.00 32 3.23 0.0209
2016-07-28 2016-06-30 13F Diamondback Energy COM 25278X109 349 0 0.00 31 24.00 0.0213
2016-04-27 2016-03-31 13F Diamondback Energy COM 25278X109 349 337 2,808.33 25 0.0162
2016-01-28 2015-12-31 13F Diamondback Energy COM 25278X109 12 -33 -73.33 0 -100.00
2015-10-28 2015-09-30 13F Diamondback Energy COM 25278X109 45 -135 -75.00 2 -83.33 0.0014
2015-08-12 2015-06-30 13F Diamondback Energy COM 25278X109 180 180 12 0.0076
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.