Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionPrincipal Securities, Inc.
Latest Disclosed Ownership13,085 shares
Latest Disclosed Value $ 2,588,062
Principal Securities, Inc. reports 4.97% increase in ownership of FANG / Diamondback Energy, Inc.

On May 13, 2026 - Principal Securities, Inc. filed a 13F-HR form disclosing ownership of 13,085 shares of Diamondback Energy, Inc. (US:FANG) valued at $2,588,082 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 12,465 shares of Diamondback Energy, Inc.. This represents a change in shares of 4.97% during the quarter. The current value of the position is $2,520,433 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 13,085 620 4.97 2,588 38.17 0.0380
2026-02-12 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 12,465 5,042 67.92 1,874 76.37 0.0289
2025-11-12 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 7,423 546 7.94 1,062 12.50 0.0175
2025-08-11 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 6,877 1,347 24.36 945 4.31 0.0178
2025-04-30 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 5,530 0 0.00 906 0.00 0.0203
2025-01-30 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 5,530 540 10.82 906 5.23 0.0204
2024-10-28 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 4,990 33 0.67 860 -13.31 0.0208
2024-07-31 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 4,957 -553 -10.04 992 -9.07 0.0273
2024-05-10 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 5,510 637 13.07 1,092 44.50 0.0340
2024-05-10 2023-12-31 13F/A-1 DIAMONDBACK ENERGY COM 25278X109 4,873 4,873 756 0.0281
2024-02-07 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 4,873 4,873 756 0.0281
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.