STERIS plc
US ˙ NYSE

SecuritySTE / STERIS plc
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership10,680 shares
Latest Disclosed Value $ 2,361,668
Marshall Wace, Llp reports 90.91% decrease in ownership of STE / STERIS plc

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 10,680 shares of STERIS plc (US:STE) valued at $2,361,668 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 117,526 shares of STERIS plc. This represents a change in shares of -90.91% during the quarter. The current value of the position is $2,266,723 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)
2026-05-14 2026-03-31 13F STERIS COMMON STOCK G8473T100 10,680 -106,846 -90.91 2,362 -92.08 0.0024
2026-02-13 2025-12-31 13F STERIS COMMON STOCK G8473T100 117,526 117,526 29,795 0.0271
2025-08-13 2025-06-30 13F STERIS COMMON STOCK G8473T100 0 -4,100 -100.00 0 -100.00
2025-05-15 2025-03-31 13F STERIS COMMON STOCK G8473T100 4,100 -166,687 -97.60 929 -97.35 0.0012
2025-02-13 2024-12-31 13F STERIS COMMON STOCK G8473T100 170,787 -347,615 -67.06 35,107 -72.08 0.0422
2024-11-14 2024-09-30 13F STERIS COMMON STOCK G8473T100 518,402 16,499 3.29 125,733 14.11 0.1531
2024-08-14 2024-06-30 13F STERIS COMMON STOCK G8473T100 501,903 -27,337 -5.17 110,188 -7.39 0.1471
2024-05-15 2024-03-31 13F STERIS COMMON STOCK G8473T100 529,240 -147,302 -21.77 118,984 -20.00 0.1812
2024-02-14 2023-12-31 13F STERIS COMMON STOCK G8473T100 676,542 -49,006 -6.75 148,738 -6.57 0.2519
2023-11-14 2023-09-30 13F STERIS COMMON STOCK G8473T100 725,548 34,204 4.95 159,200 2.35 0.3224
2023-08-14 2023-06-30 13F STERIS COMMON STOCK G8473T100 691,344 135,930 24.47 155,539 46.40 0.3038
2023-05-15 2023-03-31 13F STERIS COMMON STOCK G8473T100 555,414 450,396 428.88 106,240 447.76 0.2257
2023-02-14 2022-12-31 13F STERIS COMMON STOCK G8473T100 105,018 -275,364 -72.39 19,396 -69.33 0.0436
2022-11-14 2022-09-30 13F STERIS COMMON STOCK G8473T100 380,382 -509,843 -57.27 63,248 -65.54 0.1386
2022-08-15 2022-06-30 13F STERIS COMMON STOCK G8473T100 890,225 286,487 47.45 183,523 25.73 0.3775
2022-05-16 2022-03-31 13F STERIS COMMON STOCK G8473T100 603,738 -535,711 -47.01 145,967 -47.37 0.2764
2022-02-14 2021-12-31 13F STERIS COMMON STOCK G8473T100 1,139,449 1,121,711 6,323.77 277,353 7,553.23 0.5122
2021-11-15 2021-09-30 13F STERIS COMMON STOCK G8473T100 17,738 3,192 21.94 3,624 20.76 0.0150
2021-08-13 2021-06-30 13F STERIS COMMON STOCK G8473T100 14,546 -2,106 -12.65 3,001 -5.39 0.0146
2021-05-17 2021-03-31 13F STERIS COMMON STOCK G8473T100 16,652 -47,038 -73.85 3,172 -73.72 0.0145
2021-02-16 2020-12-31 13F STERIS COMMON STOCK G8473T100 63,690 54,253 574.90 12,072 625.92 0.0654
2020-11-16 2020-09-30 13F STERIS COMMON STOCK G8473T100 9,437 9,437 -85.18 1,663 -86.22 0.0106
2020-08-13 2020-06-30 13F STERIS COMMON STOCK G8473T100 0 -222 -100.00 0 -100.00
2020-05-15 2020-03-31 13F STERIS COMMON STOCK G8473T100 222 -52,488 -99.58 31 -99.61 0.0003
2020-02-14 2019-12-31 13F STERIS COMMON STOCK G8473T100 52,710 12,219 30.18 8,033 37.29 0.0552
2019-11-14 2019-09-30 13F STERIS COMMON STOCK G8473T100 40,491 -109,302 -72.97 5,851 -73.76 0.0460
2019-08-14 2019-06-30 13F STERIS COMMON STOCK G8473T100 149,793 149,793 269.94 22,301 281.15 0.1835
2019-05-14 2019-03-31 13F STERIS COMMON STOCK G84720104 0 -4,273 -100.00 0 -100.00
2019-02-14 2018-12-31 13F STERIS COMMON STOCK G84720104 4,273 4,273 457 0.0047
2017-02-10 2016-12-31 13F STERIS COMMON STOCK G84720104 0 -51,853 -100.00 0 -100.00
2016-11-10 2016-09-30 13F STERIS COMMON STOCK G84720104 51,853 -128,420 -71.24 3,790 -69.42 0.0269
2016-08-12 2016-06-30 13F STERIS COMMON STOCK G84720104 180,273 116,385 182.17 12,394 173.06 0.1042
2016-05-13 2016-03-31 13F STERIS COMMON STOCK G84720104 63,888 -42,849 -40.14 4,539 -43.55 0.0437
2016-02-10 2015-12-31 13F STERIS COMMON STOCK G84720104 106,737 15,045 16.41 8,041 34.98 0.0755
2015-11-12 2015-09-30 13F STERIS COMMON STOCK G84720104 91,692 58,215 173.90 5,957 176.17 0.0732
2015-08-14 2015-06-30 13F STERIS COMMON STOCK 859152100 33,477 -36,763 -52.34 2,157 -56.30 0.0281
2015-05-11 2015-03-31 13F STERIS COMMON STOCK 859152100 70,240 70,240 4,936 0.0643
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.