Flowserve Corporation
US ˙ NYSE ˙ US34354P1057

SecurityFLS / Flowserve Corporation
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership3,864 shares
Latest Disclosed Value $ 284,043
Asset Management One Co., Ltd. reports 2.40% decrease in ownership of FLS / Flowserve Corporation

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 3,864 shares of Flowserve Corporation (US:FLS) valued at $284,043 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 3,959 shares of Flowserve Corporation. This represents a change in shares of -2.40% during the quarter. The current value of the position is $291,423 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)
2026-05-08 2026-03-31 13F FLOWSERVE COM 34354P105 3,864 -95 -2.40 284 2.16 0.0008
2026-01-27 2025-12-31 13F FLOWSERVE COM 34354P105 3,959 0 0.00 279 32.38 0.0008
2025-10-22 2025-09-30 13F FLOWSERVE COM 34354P105 3,959 -305 -7.15 210 -5.83 0.0006
2025-07-31 2025-06-30 13F FLOWSERVE COM 34354P105 4,264 -7 -0.16 223 7.21 0.0007
2025-04-23 2025-03-31 13F FLOWSERVE COM 34354P105 4,271 -303 -6.62 209 -21.21 0.0007
2025-01-30 2024-12-31 13F FLOWSERVE COM 34354P105 4,574 -252 -5.22 264 6.02 0.0009
2024-10-30 2024-09-30 13F FLOWSERVE COM 34354P105 4,826 -24,267 -83.41 249 -82.20 0.0009
2024-07-18 2024-06-30 13F FLOWSERVE COM 34354P105 29,093 29,093 1,399 0.0054
2021-05-14 2021-03-31 13F FLOWSERVE COM 34354P105 0 -1,076 -100.00 0 -100.00
2021-02-12 2020-12-31 13F FLOWSERVE COM 34354P105 1,076 177 19.69 39 56.00 0.0002
2020-11-13 2020-09-30 13F FLOWSERVE COM 34354P105 899 -344 -27.67 25 -28.57 0.0001
2020-08-14 2020-06-30 13F FLOWSERVE COM 34354P105 1,243 -65,852 -98.15 35 -97.82 0.0002
2020-05-14 2020-03-31 13F FLOWSERVE COM 34354P105 67,095 -17,752 -20.92 1,602 -62.06 0.0094
2020-02-14 2019-12-31 13F FLOWSERVE COM 34354P105 84,847 -1,160 -1.35 4,223 5.02 0.0190
2019-11-14 2019-09-30 13F FLOWSERVE COM 34354P105 86,007 862 1.01 4,021 -10.39 0.0194
2019-08-14 2019-06-30 13F FLOWSERVE COM 34354P105 85,145 -1,030 -1.20 4,487 15.32 0.0220
2019-05-15 2019-03-31 13F FLOWSERVE COM 34354P105 86,175 -145,199 -62.76 3,891 -55.75 0.0210
2019-02-13 2018-12-31 13F FLOWSERVE COM 34354P105 231,374 3,449 1.51 8,794 -29.48 0.0210
2018-11-14 2018-09-30 13F FLOWSERVE COM 34354P105 227,925 1,184 0.52 12,470 36.28 0.0256
2018-08-14 2018-06-30 13F FLOWSERVE COM 34354P105 226,741 1,276 0.57 9,150 -6.34 0.0200
2018-05-14 2018-03-31 13F FLOWSERVE COM 34354P105 225,465 -983 -0.43 9,769 2.45 0.0220
2018-02-14 2017-12-31 13F FLOWSERVE COM 34354P105 226,448 -5,512 -2.38 9,535 -3.46 0.0210
2017-11-14 2017-09-30 13F FLOWSERVE COM 34354P105 231,960 -1,136 -0.49 9,877 -8.52 0.0232
2017-08-14 2017-06-30 13F FLOWSERVE COM 34354P105 233,096 1,802 0.78 10,797 -3.48 0.0276
2017-05-11 2017-03-31 13F FLOWSERVE COM 34354P105 231,294 6,616 2.94 11,186 3.61 0.0294
2017-05-02 2016-12-31 13F/A-1 FLOWSERVE COM 34354P105 224,678 176,377 365.16 10,796 371.85 0.0276
2017-02-13 2016-12-31 13F FLOWSERVE COM 34354P105 224,678 10,796
2016-11-07 2016-09-30 13F FLOWSERVE Com 34354P105 48,301 37,074 330.22 2,288 357.60 0.0340
2016-08-03 2016-06-30 13F FLOWSERVE Com 34354P105 11,227 0 0.00 500 1.21 0.0075
2016-05-05 2016-03-31 13F FLOWSERVE Com 34354P105 11,227 0 0.00 494 2.92 0.0072
2016-01-28 2015-12-31 13F FLOWSERVE Com 34354P105 11,227 -3,228 -22.33 480 -17.67 0.0072
2015-11-12 2015-09-30 13F FLOWSERVE Com 34354P105 14,455 0 0.00 583 -21.53 0.0089
2015-08-06 2015-06-30 13F FLOWSERVE Com 34354P105 14,455 0 0.00 743 -10.27 0.0103
2015-05-11 2015-03-31 13F FLOWSERVE COM 34354P105 14,455 0 0.00 828 -4.94 0.0102
2015-02-09 2014-12-31 13F FLOWSERVE COM 34354P105 14,455 0 0.00 871 -14.77 0.0113
2014-11-05 2014-09-30 13F FLOWSERVE COM 34354P105 14,455 0 0.00 1,022 -4.31 0.0141
2014-08-12 2014-06-30 13F FLOWSERVE COM 34354P105 14,455 -2,654 -15.51 1,068 -18.60 0.0159
2014-05-05 2014-03-31 13F FLOWSERVE COM 34354P105 17,109 -3,347 -16.36 1,312 -17.07 0.0207
2014-02-05 2013-12-31 13F/A-1 FLOWSERVE COM 34354P105 20,456 -5,876 -22.32 1,582 -3.42 0.0245
2014-01-29 2013-12-31 13F FLOWSERVE COM 34354P105 20,456 1,582
2014-02-05 2013-09-30 13F/A-1 FLOWSERVE COM 34354P105 26,332 651 2.53 1,638 17.17 0.0246
2013-11-06 2013-09-30 13F FLOWSERVE Com 34354P105 26,332 1,638
2014-02-12 2013-06-30 13F/A-1 FLOWSERVE Com 34354P105 25,681 25,681 1,398 0.0227
2013-08-05 2013-06-30 13F FLOWSERVE Com 34354P105 25,681 1,398
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.