Flowserve Corporation
US ˙ NYSE ˙ US34354P1057

SecurityFLS / Flowserve Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership11,316 shares
Latest Disclosed Value $ 831,999
Advisor Group Holdings, Inc. reports 41.77% increase in ownership of FLS / Flowserve Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 11,316 shares of Flowserve Corporation (US:FLS) valued at $831,839 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,982 shares of Flowserve Corporation. This represents a change in shares of 41.77% during the quarter. The current value of the position is $853,453 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 FLOWSERVE COM 34354P105 11,316 3,334 41.77 832 50.00 0.0007
2026-02-17 2025-12-31 13F FLOWSERVE COM 34354P105 7,982 -21,314 -72.75 554 -64.71 0.0008
2025-11-14 2025-09-30 13F FLOWSERVE COM 34354P105 29,296 21,133 258.89 1,570 267.68 0.0022
2025-09-04 2025-06-30 13F/A-1 LOWSERVE COM 34354P105 8,163 3,013 58.50 427 70.12 0.0008
2025-08-13 2025-06-30 13F LOWSERVE COM 34354P105 2,071 -3,079 118 0.0001
2025-05-12 2025-03-31 13F FLOWSERVE COM 34354P105 5,150 1,637 46.60 252 24.26 0.0006
2025-06-06 2024-12-31 13F/A-1 FLOWSERVE COM 34354P105 3,513 1,427 68.41 202 88.79 0.0005
2025-02-07 2024-12-31 13F FLOWSERVE COM 34354P105 2,002 -84 113 0.0003
2024-11-13 2024-09-30 13F FLOWSERVE COM 34354P105 2,086 -140 -6.29 108 0.00 0.0002
2024-08-13 2024-06-30 13F FLOWSERVE COM 34354P105 2,226 1,323 146.51 107 160.98 0.0003
2024-05-10 2024-03-31 13F FLOWSERVE COM 34354P105 903 -15,343 -94.44 41 -93.87 0.0001
2024-02-12 2023-12-31 13F FLOWSERVE COM 34354P105 16,246 -14,804 -47.68 670 -45.79 0.0012
2023-11-13 2023-09-30 13F FLOWSERVE COM 34354P105 31,050 1,751 5.98 1,235 13.42 0.0018
2023-08-21 2023-06-30 13F/A-1 FLOWSERVE COM 34354P105 29,299 13,251 82.57 1,089 99.63 0.0020
2023-08-10 2023-06-30 13F FLOWSERVE COM 34354P105 29,299 13,251 1,089 0.0003
2023-05-12 2023-03-31 13F FLOWSERVE COM 34354P105 16,048 1,362 9.27 546 21.11 0.0010
2023-02-10 2022-12-31 13F FLOWSERVE COM 34354P105 14,686 525 3.71 451 30.43 0.0009
2022-11-14 2022-09-30 13F FLOWSERVE COM 34354P105 14,161 13,351 1,648.27 345 1,337.50 0.0008
2022-08-10 2022-06-30 13F FLOWSERVE COM 34354P105 810 -139 -14.65 24 -93.22 0.0001
2022-05-04 2022-03-31 13F FLOWSERVE COM 34354P105 949 -556 -36.94 354 653.19 0.0007
2022-02-03 2021-12-31 13F FLOWSERVE COM 34354P105 1,505 -764 -33.67 47 -39.74 0.0001
2021-11-05 2021-09-30 13F FLOWSERVE COM 34354P105 2,269 -593 -20.72 78 -32.76 0.0002
2021-08-02 2021-06-30 13F FLOWSERVE COM 34354P105 2,862 -561 -16.39 116 -13.43 0.0003
2021-05-13 2021-03-31 13F FLOWSERVE COM 34354P105 3,423 447 15.02 134 20.72 0.0003
2021-02-10 2020-12-31 13F FLOWSERVE COM 34354P105 2,976 427 16.75 111 58.57 0.0003
2020-11-12 2020-09-30 13F FLOWSERVE COM 34354P105 2,549 -1,017 -28.52 70 -31.37 0.0002
2020-08-14 2020-06-30 13F FLOWSERVE COM 34354P105 3,566 1,673 88.38 102 126.67 0.0003
2020-05-18 2020-03-31 13F FLOWSERVE COM 34354P105 1,893 1,893 45 0.0002
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.