Flowserve Corporation
US ˙ NYSE ˙ US34354P1057

SecurityFLS / Flowserve Corporation
InstitutionWoodstock Corp
Latest Disclosed Ownership68,194 shares
Latest Disclosed Value $ 5,012,941
Woodstock Corp reports 1.39% decrease in ownership of FLS / Flowserve Corporation

On April 8, 2026 - Woodstock Corp filed a 13F-HR form disclosing ownership of 68,194 shares of Flowserve Corporation (US:FLS) valued at $5,012,941 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 69,154 shares of Flowserve Corporation. This represents a change in shares of -1.39% during the quarter. The current value of the position is $5,143,191 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)
2026-04-08 2026-03-31 13F Flowserve COMMON STOCK 34354P105 68,194 -960 -1.39 5,013 4.48 0.4462
2026-01-14 2025-12-31 13F Flowserve COMMON STOCK 34354P105 69,154 -90 -0.13 4,798 30.39 0.4117
2025-10-07 2025-09-30 13F Flowserve COMMON STOCK 34354P105 69,244 0 0.00 3,680 1.52 0.3189
2025-07-09 2025-06-30 13F Flowserve COMMON STOCK 34354P105 69,244 -299 -0.43 3,625 6.71 0.3332
2025-04-09 2025-03-31 13F Flowserve COMMON STOCK 34354P105 69,543 -15,500 -18.23 3,396 -30.57 0.3355
2025-01-15 2024-12-31 13F Flowserve COMMON STOCK 34354P105 85,043 -1,170 -1.36 4,892 9.76 0.4712
2024-10-11 2024-09-30 13F Flowserve COMMON STOCK 34354P105 86,213 -3,996 -4.43 4,456 2.70 0.4288
2024-07-08 2024-06-30 13F Flowserve COMMON STOCK 34354P105 90,209 65 0.07 4,339 5.39 0.4412
2024-04-09 2024-03-31 13F Flowserve COMMON STOCK 34354P105 90,144 20 0.02 4,118 10.85 0.4263
2024-01-08 2023-12-31 13F Flowserve COMMON STOCK 34354P105 90,124 3,655 4.23 3,715 8.03 0.4302
2023-10-10 2023-09-30 13F Flowserve COMMON STOCK 34354P105 86,469 8,105 10.34 3,439 18.10 0.4312
2023-07-07 2023-06-30 13F Flowserve COMMON STOCK 34354P105 78,364 1,350 1.75 2,911 11.19 0.3435
2023-04-06 2023-03-31 13F Flowserve COMMON STOCK 34354P105 77,014 10,775 16.27 2,618 28.84 0.3339
2023-01-10 2022-12-31 13F Flowserve COMMON STOCK 34354P105 66,239 2,840 4.48 2,032 31.86 0.2701
2022-10-11 2022-09-30 13F Flowserve COMMON STOCK 34354P105 63,399 24,520 63.07 1,541 38.45 0.2293
2022-07-11 2022-06-30 13F Flowserve COMMON STOCK 34354P105 38,879 250 0.65 1,113 -19.75 0.1545
2022-04-07 2022-03-31 13F Flowserve COMMON STOCK 34354P105 38,629 4,820 14.26 1,387 34.01 0.1624
2022-01-07 2021-12-31 13F Flowserve COMMON STOCK 34354P105 33,809 5,200 18.18 1,035 4.33 0.1084
2021-10-05 2021-09-30 13F Flowserve COMMON STOCK 34354P105 28,609 2,909 11.32 992 -4.25 0.1157
2021-07-06 2021-06-30 13F Flowserve COMMON STOCK 34354P105 25,700 -600 -2.28 1,036 1.47 0.1219
2021-04-05 2021-03-31 13F Flowserve COMMON STOCK 34354P105 26,300 5,570 26.87 1,021 33.64 0.1298
2021-01-06 2020-12-31 13F Flowserve COMMON STOCK 34354P105 20,730 -8,240 -28.44 764 -3.41 0.1023
2020-10-02 2020-09-30 13F Flowserve COMMON STOCK 34354P105 28,970 -6,680 -18.74 791 -22.22 0.1277
2020-07-07 2020-06-30 13F Flowserve COMMON STOCK 34354P105 35,650 2,000 5.94 1,017 26.49 0.1734
2020-04-03 2020-03-31 13F Flowserve COMMON STOCK 34354P105 33,650 -1,100 -3.17 804 -53.53 0.1638
2020-01-13 2019-12-31 13F Flowserve COMMON STOCK 34354P105 34,750 2,300 7.09 1,730 14.12 0.2818
2019-10-02 2019-09-30 13F Flowserve COMMON STOCK 34354P105 32,450 -100 -0.31 1,516 -11.60 0.2641
2019-07-03 2019-06-30 13F Flowserve COMMON STOCK 34354P105 32,550 250 0.77 1,715 17.63 0.2994
2019-04-05 2019-03-31 13F Flowserve COMMON STOCK 34354P105 32,300 0 0.00 1,458 18.73 0.2612
2019-01-08 2018-12-31 13F Flowserve COMMON STOCK 34354P105 32,300 400 1.25 1,228 -29.63 0.2464
2018-10-03 2018-09-30 13F Flowserve COMMON STOCK 34354P105 31,900 0 0.00 1,745 35.38 0.2949
2018-07-23 2018-06-30 13F Flowserve COMMON STOCK 34354P105 31,900 3,300 11.54 1,289 4.04 0.2373
2018-04-19 2018-03-31 13F Flowserve COMMON STOCK 34354P105 28,600 -1,500 -4.98 1,239 -2.29 0.2343
2018-01-24 2017-12-31 13F Flowserve COMMON STOCK 34354P105 30,100 1,050 3.61 1,268 2.51 0.2339
2017-10-06 2017-09-30 13F Flowserve COMMON STOCK 34354P105 29,050 1,750 6.41 1,237 -2.44 0.2358
2017-07-13 2017-06-30 13F Flowserve COMMON STOCK 34354P105 27,300 5,790 26.92 1,268 21.69 0.2485
2017-04-05 2017-03-31 13F Flowserve COMMON STOCK 34354P105 21,510 2,465 12.94 1,042 13.88 0.2100
2017-01-05 2016-12-31 13F Flowserve COMMON STOCK 34354P105 19,045 -750 -3.79 915 -4.19 0.1855
2016-10-06 2016-09-30 13F Flowserve COMMON STOCK 34354P105 19,795 -750 -3.65 955 2.91 0.1954
2016-08-03 2016-06-30 13F Flowserve COMMON STOCK 34354P105 20,545 -1,650 -7.43 928 -5.88 0.1915
2016-05-10 2016-03-31 13F Flowserve COMMON STOCK 34354P105 22,195 100 0.45 986 6.02 0.2074
2016-01-11 2015-12-31 13F FLOWSERVE COMMON STOCK 34354P105 22,095 -787 -3.44 930 -1.17 0.2045
2015-10-16 2015-09-30 13F FLOWSERVE COMMON STOCK 34354P105 22,882 -21,450 -48.38 941 -59.70 0.2142
2015-07-07 2015-06-30 13F FLOWSERVE COMMON STOCK 34354P105 44,332 2,250 5.35 2,335 -1.77 0.4400
2015-04-09 2015-03-31 13F FLOWSERVE COMMON STOCK 34354P105 42,082 -880 -2.05 2,377 -7.51 0.4411
2015-02-13 2014-12-31 13F FLOWSERVE COMMON STOCK 34354P105 42,962 -9,020 -17.35 2,570 -29.90 0.4774
2014-10-06 2014-09-30 13F FLOWSERVE COMMON STOCK 34354P105 51,982 17,700 51.63 3,666 43.82 0.7053
2014-07-07 2014-06-30 13F FLOWSERVE COMMON STOCK 34354P105 34,282 -10 -0.03 2,549 -5.10 0.4517
2014-04-07 2014-03-31 13F FLOWSERVE COMMON STOCK 34354P105 34,292 -100 -0.29 2,686 -0.92 0.4996
2014-01-13 2013-12-31 13F FLOWSERVE COMMON STOCK 34354P105 34,392 -1,810 -5.00 2,711 20.01 0.4925
2013-10-07 2013-09-30 13F FLOWSERVE COMMON STOCK 34354P105 36,202 -150 -0.41 2,259 15.08 0.4475
2013-07-09 2013-06-30 13F FLOWSERVE COMMON STOCK 34354P105 36,352 36,352 1,963 0.4012
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.