Pentair plc
US ˙ NYSE ˙ IE00BLS09M33

SecurityPNR / Pentair plc
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership30,332 shares
Latest Disclosed Value $ 2,642,221
OMERS ADMINISTRATION Corp reports 16.85% increase in ownership of PNR / Pentair plc

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 30,332 shares of Pentair plc (US:PNR) valued at $2,642,221 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 25,958 shares of Pentair plc. This represents a change in shares of 16.85% during the quarter. The current value of the position is $2,167,221 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 PENTAIR SHS G7S00T104 30,332 4,374 16.85 2,642 -2.26 0.0170
2026-02-13 2025-12-31 13F PENTAIR SHS G7S00T104 25,958 20,048 339.22 2,703 313.30 0.0193
2025-11-14 2025-09-30 13F PENTAIR SHS G7S00T104 5,910 0 0.00 655 7.92 0.0047
2025-08-13 2025-06-30 13F PENTAIR SHS G7S00T104 5,910 0 0.00 607 17.21 0.0048
2025-05-14 2025-03-31 13F PENTAIR SHS G7S00T104 5,910 -976 -14.17 517 -25.40 0.0045
2025-02-14 2024-12-31 13F PENTAIR SHS G7S00T104 6,886 1,178 20.64 693 24.19 0.0061
2024-11-13 2024-09-30 13F PENTAIR SHS G7S00T104 5,708 0 0.00 558 27.69 0.0051
2024-08-13 2024-06-30 13F PENTAIR SHS G7S00T104 5,708 5,708 438 0.0042
2019-08-08 2019-06-30 13F PENTAIR SHS G7S00T104 0 -17,500 -100.00 0 -100.00
2019-05-15 2019-03-31 13F PENTAIR SHS G7S00T104 17,500 17,500 807 0.0093
2019-02-14 2018-12-31 13F PENTAIR SHS G7S00T104 0 -119,000 -100.00 0 -100.00
2018-11-14 2018-09-30 13F PENTAIR SHS G7S00T104 119,000 119,000 5,159 0.0494
2018-05-11 2018-03-31 13F PENTAIR SHS G7S00T104 0 -13,000 -100.00 0 -100.00
2018-05-14 2017-12-31 13F/A-1 PENTAIR SHS G7S00T104 13,000 0 0.00 918 3.96 0.0092
2018-02-13 2017-12-31 13F PENTAIR SHS G7S00T104 13,000 0 918
2018-05-14 2017-09-30 13F/A-1 PENTAIR SHS G7S00T104 13,000 3,400 35.42 883 38.18 0.0098
2017-11-13 2017-09-30 13F PENTAIR SHS G7S00T104 13,000 3,400 883
2017-08-08 2017-06-30 13F PENTAIR SHS G7S00T104 9,600 0 0.00 639 5.97 0.0081
2017-05-10 2017-03-31 13F PENTAIR SHS G7S00T104 9,600 9,600 603 0.0080
2017-02-09 2016-12-31 13F PENTAIR SHS G7S00T104 0 -17,200 -100.00 0 -100.00
2016-11-14 2016-09-30 13F PENTAIR SHS G7S00T104 17,200 5,600 48.28 1,105 63.46 0.0197
2016-08-11 2016-06-30 13F PENTAIR SHS G7S00T104 11,600 0 0.00 676 7.47 0.0139
2016-05-12 2016-03-31 13F PENTAIR SHS G7S00T104 11,600 11,600 0.00 629 0.0140
2016-02-11 2015-12-31 13F PENTAIR SHS G7S00T104 0 0 0 0.0000
2015-11-12 2015-09-30 13F PENTAIR SHS G7S00T104 0 -16,900 -100.00 0 -100.00
2015-08-11 2015-06-30 13F PENTAIR SHS G7S00T104 16,900 16,900 0.00 1,162 0.0461
2015-05-12 2015-03-31 13F PENTAIR SHS G7S00T104 0 -9,600 -100.00 0 -100.00
2015-02-11 2014-12-31 13F PENTAIR SHS G7S00T104 9,600 -2,200 -18.64 638 -31.84 0.0193
2014-05-08 2014-03-31 13F PENTAIR SHS H6169Q108 11,800 6,200 110.71 936 115.17 0.0303
2014-02-13 2013-12-31 13F PENTAIR SHS H6169Q108 5,600 5,600 435 0.0160
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.