ProPetro Holding Corp.
US ˙ NYSE ˙ US74347M1080

SecurityPUMP / ProPetro Holding Corp.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership33,913 shares
Latest Disclosed Value $ 488,856
Janus Henderson Group Plc ownership in PUMP / ProPetro Holding Corp.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 33,913 shares of ProPetro Holding Corp. (US:PUMP) valued at $488,686 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 33,913 shares of ProPetro Holding Corp.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $558,547 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)
2026-05-18 2026-03-31 13F/A-1 PROPETRO HLDG COM 74347M108 33,913 0 0.00 489 51.55 0.0001
2026-05-15 2026-03-31 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 489 51.55 0.0001
2026-02-17 2025-12-31 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 323 81.92 0.0001
2025-11-14 2025-09-30 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 178 -12.38 0.0001
2025-08-14 2025-06-30 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 202 -19.20 0.0001
2025-05-15 2025-03-31 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 250 -20.89 0.0001
2025-02-14 2024-12-31 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 317 22.01 0.0002
2024-11-14 2024-09-30 13F PROPETRO HLDG COM 74347M108 33,913 0 0.00 260 -11.60 0.0001
2024-08-14 2024-06-30 13F PROPETRO HLDG COM 74347M108 33,913 -406 -1.18 294 5.78 0.0002
2024-05-15 2024-03-31 13F PROPETRO HLDG COM 74347M108 34,319 3 0.01 277 -3.48 0.0002
2024-02-14 2023-12-31 13F PROPETRO HLDG COM 74347M108 34,316 -79 -0.23 287 -21.37 0.0002
2023-11-14 2023-09-30 13F PROPETRO HLDG COM 74347M108 34,395 -7 -0.02 366 28.98 0.0002
2023-08-14 2023-06-30 13F PROPETRO HLDG COM 74347M108 34,402 -141 -0.41 284 14.11 0.0002
2023-05-15 2023-03-31 13F PROPETRO HLDG COM 74347M108 34,543 19,098 123.65 248 55.00 0.0002
2023-02-14 2022-12-31 13F PROPETRO HLDG COM 74347M108 15,445 -1 -0.01 160 29.03 0.0001
2023-01-13 2022-09-30 13F/A-1 PROPETRO HLDG COM 74347M108 15,446 -62 -0.40 124 -20.00 0.0001
2022-11-14 2022-09-30 13F PROPETRO HLDG COM 74347M108 15,446 -62 124 0.0001
2022-08-15 2022-06-30 13F PROPETRO HLDG COM 74347M108 15,508 72 0.47 155 -28.24 0.0001
2022-05-16 2022-03-31 13F PROPETRO HLDG COM 74347M108 15,436 2 0.01 216 72.80 0.0001
2022-02-14 2021-12-31 13F PROPETRO HLDG COM 74347M108 15,434 15,434 125 0.0001
2020-08-14 2020-06-30 13F PROPETRO HLDG COM 74347M108 0 -29,000 -100.00 0 -100.00
2020-05-14 2020-03-31 13F PROPETRO HLDG COM 74347M108 29,000 11,996 70.55 73 -61.78 0.0001
2020-02-18 2019-12-31 13F PROPETRO HLDG COM 74347M108 17,004 -5,310 -23.80 191 -5.91 0.0001
2019-11-14 2019-09-30 13F PROPETRO HLDG COM 74347M108 22,314 3,722 20.02 203 -47.27 0.0001
2019-07-31 2019-06-30 13F PROPETRO HLDG COM 74347M108 18,592 2,912 18.57 385 9.07 0.0002
2019-04-30 2019-03-31 13F PROPETRO HLDG COM 74347M108 15,680 15,680 353 0.0002
2018-03-12 2017-12-31 13F/A-1 PROPETRO HLDG COM 74347M108 0 -265,869 -100.00 0 -100.00
2017-11-14 2017-09-30 13F PROPETRO HLDG COM 74347M108 265,869 -41,254 -13.43 3,815 -11.01 0.0024
2017-08-17 2017-06-30 13F/A-1 PROPETRO HLDG COM 74347M108 307,123 261,566 574.15 4,287 630.32 0.0029
2017-08-14 2017-06-30 13F PROPETRO HLDG COM 74347M108 307,123 261,566 4,287
2017-05-03 2017-03-31 13F PROPETRO HLDG COM 74347M108 45,557 45,557 587 0.0041
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.