Diamondback Energy, Inc.
US ˙ NasdaqGS ˙ US25278X1090

SecurityFANG / Diamondback Energy, Inc.
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership102,436 shares
Latest Disclosed Value $ 20,260,816
CIBC Asset Management Inc reports 0.56% decrease in ownership of FANG / Diamondback Energy, Inc.

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 102,436 shares of Diamondback Energy, Inc. (US:FANG) valued at $20,260,816 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 103,014 shares of Diamondback Energy, Inc.. This represents a change in shares of -0.56% during the quarter. The current value of the position is $19,731,222 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)
2026-05-12 2026-03-31 13F DIAMONDBACK ENERGY COM 25278X109 102,436 -578 -0.56 20,261 30.83 0.0495
2026-02-10 2025-12-31 13F DIAMONDBACK ENERGY COM 25278X109 103,014 20,382 24.67 15,486 30.97 0.0374
2025-10-31 2025-09-30 13F DIAMONDBACK ENERGY COM 25278X109 82,632 33 0.04 11,825 4.19 0.0342
2025-08-14 2025-06-30 13F DIAMONDBACK ENERGY COM 25278X109 82,599 1,204 1.48 11,349 -12.79 0.0351
2025-05-13 2025-03-31 13F DIAMONDBACK ENERGY COM 25278X109 81,395 3,783 4.87 13,013 2.34 0.0432
2025-01-31 2024-12-31 13F DIAMONDBACK ENERGY COM 25278X109 77,612 21,313 37.86 12,715 31.01 0.0417
2024-11-06 2024-09-30 13F DIAMONDBACK ENERGY COM 25278X109 56,299 4,020 7.69 9,706 -7.26 0.0315
2024-08-01 2024-06-30 13F DIAMONDBACK ENERGY COM 25278X109 52,279 -324 -0.62 10,466 0.39 0.0372
2024-05-09 2024-03-31 13F DIAMONDBACK ENERGY COM 25278X109 52,603 2,789 5.60 10,424 34.94 0.0362
2024-02-13 2023-12-31 13F DIAMONDBACK ENERGY COM 25278X109 49,814 60 0.12 7,725 0.26 0.0289
2023-10-30 2023-09-30 13F DIAMONDBACK ENERGY COM 25278X109 49,754 5,055 11.31 7,706 31.24 0.0319
2023-08-14 2023-06-30 13F DIAMONDBACK ENERGY COM 25278X109 44,699 -301 -0.67 5,872 -3.47 0.0225
2023-05-12 2023-03-31 13F DIAMONDBACK ENERGY COM 25278X109 45,000 1,271 2.91 6,083 1.69 0.0241
2023-02-13 2022-12-31 13F DIAMONDBACK ENERGY COM 25278X109 43,729 19,355 79.41 5,981 103.71 0.0251
2022-11-03 2022-09-30 13F DIAMONDBACK ENERGY COM 25278X109 24,374 3,046 14.28 2,936 13.62 0.0129
2022-08-09 2022-06-30 13F DIAMONDBACK ENERGY COM 25278X109 21,328 1,185 5.88 2,584 -6.41 0.0105
2022-05-06 2022-03-31 13F DIAMONDBACK ENERGY COM 25278X109 20,143 3,441 20.60 2,761 53.30 0.0097
2022-02-08 2021-12-31 13F DIAMONDBACK ENERGY COM 25278X109 16,702 400 2.45 1,801 16.72 0.0066
2021-11-09 2021-09-30 13F DIAMONDBACK ENERGY COM 25278X109 16,302 885 5.74 1,543 6.56 0.0062
2021-08-16 2021-06-30 13F DIAMONDBACK ENERGY COM 25278X109 15,417 1,086 7.58 1,448 37.51 0.0059
2021-05-14 2021-03-31 13F DIAMONDBACK ENERGY COM 25278X109 14,331 -3 -0.02 1,053 51.73 0.0045
2021-02-03 2020-12-31 13F DIAMONDBACK ENERGY COM 25278X109 14,334 -25 -0.17 694 60.65 0.0033
2020-11-05 2020-09-30 13F DIAMONDBACK ENERGY COM 25278X109 14,359 153 1.08 432 -27.27 0.0022
2020-07-28 2020-06-30 13F DIAMONDBACK ENERGY COM 25278X109 14,206 209 1.49 594 61.85 0.0035
2020-04-30 2020-03-31 13F DIAMONDBACK ENERGY COM 25278X109 13,997 -672 -4.58 367 -73.05 0.0026
2020-02-14 2019-12-31 13F DIAMONDBACK ENERGY COM 25278X109 14,669 -1,138 -7.20 1,362 -4.15 0.0077
2019-10-30 2019-09-30 13F DIAMONDBACK ENERGY COM 25278X109 15,807 -2,970 -15.82 1,421 -30.55 0.0083
2019-08-05 2019-06-30 13F DIAMONDBACK ENERGY COM 25278X109 18,777 1,190 6.77 2,046 14.56 0.0122
2019-05-06 2019-03-31 13F DIAMONDBACK ENERGY COM 25278X109 17,587 1,762 11.13 1,786 21.75 0.0111
2019-02-12 2018-12-31 13F DIAMONDBACK ENERGY COM 25278X109 15,825 11,800 293.17 1,467 169.67 0.0108
2018-11-02 2018-09-30 13F DIAMONDBACK ENERGY COM 25278X109 4,025 20 0.50 544 3.23 0.0034
2018-08-09 2018-06-30 13F DIAMONDBACK ENERGY COM 25278X109 4,005 -2,196 -35.41 527 -32.87 0.0033
2018-04-30 2018-03-31 13F DIAMONDBACK ENERGY COM 25278X109 6,201 2,917 88.82 785 89.16 0.0051
2018-02-02 2017-12-31 13F DIAMONDBACK ENERGY COM 25278X109 3,284 0 0.00 415 28.88 0.0025
2017-11-06 2017-09-30 13F DIAMONDBACK ENERGY COM 25278X109 3,284 3,284 322 0.0020
2017-07-27 2017-06-30 13F DIAMONDBACK ENERGY COM 25278X109 0 -2,142 -100.00 0 -100.00
2017-05-12 2017-03-31 13F DIAMONDBACK ENERGY COM 25278X109 2,142 0 0.00 222 2.78 0.0015
2017-02-08 2016-12-31 13F DIAMONDBACK ENERGY COM 25278X109 2,142 0 0.00 216 4.35 0.0016
2016-10-19 2016-09-30 13F DIAMONDBACK ENERGY COM 25278X109 2,142 2,142 0.00 207 0.0015
2016-08-02 2016-06-30 13F DIAMONDBACK ENERGY COM 25278X109 0 -12,232 -100.00 0 -100.00
2016-05-09 2016-03-31 13F DIAMONDBACK ENERGY COM 25278X109 12,232 3,115 34.17 944 54.75 0.0071
2016-02-02 2015-12-31 13F DIAMONDBACK ENERGY COM 25278X109 9,117 -700 -7.13 610 -3.79 0.0050
2015-11-03 2015-09-30 13F DIAMONDBACK ENERGY COM 25278X109 9,817 0 0.00 634 -14.32 0.0051
2015-08-06 2015-06-30 13F DIAMONDBACK ENERGY COM 25278X109 9,817 -32,081 -76.57 740 -77.01 0.0051
2015-05-08 2015-03-31 13F DIAMONDBACK ENERGY COM 25278X109 41,898 41,898 3,219 0.0228
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.