STERIS plc
US ˙ NYSE

SecuritySTE / STERIS plc
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership25,378 shares
Latest Disclosed Value $ 5,611,837
Millennium Management Llc ownership in STE / STERIS plc

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 25,378 shares of STERIS plc (US:STE) valued at $5,611,837 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,994 shares of STERIS plc. This represents a change in shares of -40.97% during the quarter. The current value of the position is $5,386,227 USD.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (STE) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

STE / STERIS plc Historical Put/Call Ratio
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 STERIS SHS USD G8473T100 25,378 -17,616 -40.97 5,612 -48.52 0.0023
2026-02-17 2025-12-31 13F STERIS SHS USD G8473T100 42,994 20,725 93.07 10,900 97.80 0.0046
2025-11-14 2025-09-30 13F STERIS SHS USD G8473T100 22,269 -56,672 -71.79 5,510 -70.94 0.0024
2025-08-14 2025-06-30 13F STERIS SHS USD G8473T100 78,941 -63,371 -44.53 18,963 -41.21 0.0092
2025-05-15 2025-03-31 13F STERIS SHS USD G8473T100 142,312 95,791 205.91 32,255 237.32 0.0172
2025-02-14 2024-12-31 13F STERIS SHS USD G8473T100 46,521 -56,226 -54.72 9,563 -61.63 0.0047
2024-11-14 2024-09-30 13F STERIS SHS USD G8473T100 102,747 72,235 236.74 24,920 272.05 0.0118
2024-08-14 2024-06-30 13F STERIS SHS USD G8473T100 30,512 -429 -1.39 6,699 -3.71 0.0031
2024-05-15 2024-03-31 13F STERIS SHS USD G8473T100 30,941 26,745 637.39 6,956 654.45 0.0030
2024-02-14 2023-12-31 13F STERIS SHS USD G8473T100 4,196 -31,396 -88.21 922 -88.19 0.0004
2023-11-14 2023-09-30 13F STERIS SHS USD G8473T100 35,592 5,180 17.03 7,810 14.13 0.0039
2023-08-14 2023-06-30 13F STERIS SHS USD G8473T100 30,412 8,018 35.80 6,842 59.71 0.0034
2023-05-15 2023-03-31 13F STERIS SHS USD G8473T100 22,394 16,535 282.22 4,284 295.93 0.0025
2023-02-14 2022-12-31 13F STERIS SHS USD G8473T100 5,859 3,483 146.59 1,082 173.92 0.0006
2022-11-14 2022-09-30 13F STERIS SHS USD G8473T100 2,376 -176,205 -98.67 395 -98.93 0.0002
2022-08-15 2022-06-30 13F STERIS SHS USD G8473T100 178,581 173,925 3,735.50 36,814 3,169.45 0.0228
2022-05-16 2022-03-31 13F STERIS SHS USD G8473T100 4,656 -7,306 -61.08 1,126 -61.33 0.0006
2022-02-14 2021-12-31 13F STERIS SHS USD G8473T100 11,962 -167,986 -93.35 2,912 -92.08 0.0015
2021-11-15 2021-09-30 13F STERIS SHS USD G8473T100 179,948 86,922 93.44 36,760 91.55 0.0221
2021-08-16 2021-06-30 13F STERIS SHS USD G8473T100 93,026 -96,978 -51.04 19,191 -46.97 0.0118
2021-05-17 2021-03-31 13F STERIS SHS USD G8473T100 190,004 164,239 637.45 36,192 641.18 0.0259
2021-02-16 2020-12-31 13F STERIS SHS USD G8473T100 25,765 -323 -1.24 4,883 6.24 0.0035
2020-11-16 2020-09-30 13F STERIS SHS USD G8473T100 26,088 -78,950 -75.16 4,596 -71.48 0.0057
2020-08-14 2020-06-30 13F STERIS SHS USD G8473T100 105,038 5,883 5.93 16,117 16.13 0.0221
2020-05-14 2020-03-31 13F STERIS SHS USD G8473T100 99,155 -372,513 -78.98 13,879 -80.69 0.0312
2020-02-14 2019-12-31 13F STERIS SHS USD G8473T100 471,668 308,041 188.26 71,892 204.09 0.0899
2019-11-14 2019-09-30 13F STERIS SHS USD G8473T100 163,627 155,334 1,873.07 23,642 1,814.33 0.0374
2019-08-15 2019-06-30 13F/A-1 STERIS SHS USD G8473T100 8,293 -423,587 -98.08 1,235 -97.77 0.0019
2019-05-14 2019-03-31 13F STERIS SHS USD G8473T100 431,880 -175,594 -28.91 55,294 -14.81 0.0828
2019-02-15 2018-12-31 13F/A-1 STERIS SHS USD G84720104 607,474 568,469 1,457.43 64,909 1,354.71 0.1012
2019-02-14 2018-12-31 13F STERIS SHS USD G84720104 607,474 64,909
2018-11-14 2018-09-30 13F STERIS SHS USD G84720104 39,005 32,483 498.05 4,462 551.39 0.0055
2018-08-14 2018-06-30 13F STERIS SHS USD G84720104 6,522 -33,113 -83.54 685 -81.49 0.0009
2018-05-15 2018-03-31 13F STERIS SHS USD G84720104 39,635 39,635 3,700 0.0049
2018-02-14 2017-12-31 13F STERIS SHS USD G84720104 0 -21,167 -100.00 0 -100.00
2017-11-14 2017-09-30 13F STERIS SHS USD G84720104 21,167 21,167 1,871 0.0029
2017-08-14 2017-06-30 13F STERIS SHS USD G84720104 0 -137,631 -100.00 0 -100.00
2017-05-15 2017-03-31 13F STERIS SHS USD G84720104 137,631 -53,256 -27.90 9,560 -25.68 0.0175
2017-02-14 2016-12-31 13F STERIS SHS USD G84720104 190,887 -95,113 -33.26 12,864 -38.47 0.0269
2016-11-14 2016-09-30 13F STERIS SHS USD G84720104 286,000 -26,989 -8.62 20,907 -2.84 0.0351
2016-08-15 2016-06-30 13F STERIS SHS USD G84720104 312,989 233,967 296.08 21,518 283.22 0.0493
2016-05-16 2016-03-31 13F STERIS SHS USD G84720104 79,022 -163,065 -67.36 5,615 -69.21 0.0140
2016-02-16 2015-12-31 13F STERIS SHS USD G84720104 242,087 131,808 119.52 18,239 154.56 0.0383
2015-11-16 2015-09-30 13F STERIS COM 859152100 110,279 -179,953 -62.00 7,165 -61.69 0.0139
2015-08-14 2015-06-30 13F STERIS COM 859152100 290,232 181,532 167.00 18,703 144.87 0.0354
2015-05-15 2015-03-31 13F STERIS COM 859152100 108,700 101,100 1,330.26 7,638 1,449.29 0.0142
2015-02-17 2014-12-31 13F STERIS COM 859152100 7,600 -19,666 -72.13 493 -66.49 0.0010
2014-11-14 2014-09-30 13F STERIS COM 859152100 27,266 -104,180 -79.26 1,471 -79.08 0.0037
2014-08-14 2014-06-30 13F STERIS COM 859152100 131,446 121,446 1,214.46 7,030 1,370.71 0.0195
2014-05-15 2014-03-31 13F STERIS COM 859152100 10,000 -104,429 -91.26 478 -91.31 0.0014
2014-02-14 2013-12-31 13F STERIS COM 859152100 114,429 -66,374 -36.71 5,498 -29.21 0.0174
2013-11-14 2013-09-30 13F STERIS COM 859152100 180,803 25,422 16.36 7,767 16.57 0.0250
2013-08-14 2013-06-30 13F STERIS COM 859152100 155,381 155,381 6,663 0.0204
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F STERIS SHS USD Call 75,000 18,016 n/a n/a n/a
2025-02-14 2024-12-31 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F STERIS SHS USD Call 10,000 0.00 2,425 10.48 n/a n/a n/a
2024-08-14 2024-06-30 13F STERIS SHS USD Call 10,000 -66.67 2,195 -67.45 n/a n/a n/a
2024-05-15 2024-03-31 13F STERIS SHS USD Call 30,000 -45.45 6,745 -44.22 n/a n/a n/a
2024-02-14 2023-12-31 13F STERIS SHS USD Call 55,000 -20.63 12,092 -20.48 n/a n/a n/a
2023-11-14 2023-09-30 13F STERIS SHS USD Call 69,300 1,207.55 15,206 1,175.59 n/a n/a n/a
2023-08-14 2023-06-30 13F STERIS SHS USD Call 5,300 -81.21 1,192 -77.90 n/a n/a n/a
2023-05-15 2023-03-31 13F STERIS SHS USD Call 28,200 -56.75 5,394 -55.21 n/a n/a n/a
2023-02-14 2022-12-31 13F STERIS SHS USD Call 65,200 12,042 n/a n/a n/a
2022-11-14 2022-09-30 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F STERIS SHS USD Call 37,500 7,731 n/a n/a n/a
2022-02-14 2021-12-31 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F STERIS SHS USD Call 10,000 2,043 n/a n/a n/a
2021-05-17 2021-03-31 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-16 2020-12-31 13F STERIS SHS USD Call 10,000 1,895 n/a n/a n/a
2020-11-16 2020-09-30 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F STERIS SHS USD Call 5,000 767 n/a n/a n/a
2020-02-14 2019-12-31 13F STERIS SHS USD Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F STERIS SHS USD Call 25,000 -89.96 3,612 55.09 n/a n/a n/a
2019-08-14 2019-06-30 13F QUOTIENT SHS Call 249,100 2,329 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F STERIS SHS USD Put 95,000 169.89 24,084 176.54 n/a n/a n/a
2025-11-14 2025-09-30 13F STERIS SHS USD Put 35,200 8,710 n/a n/a n/a
2025-08-14 2025-06-30 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F STERIS SHS USD Put 30,000 6,800 n/a n/a n/a
2024-08-14 2024-06-30 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F STERIS SHS USD Put 5,000 1,124 n/a n/a n/a
2023-02-14 2022-12-31 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F STERIS SHS USD Put 53,100 8,829 n/a n/a n/a
2022-05-16 2022-03-31 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F STERIS SHS USD Put 5,000 1,217 n/a n/a n/a
2020-05-14 2020-03-31 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F STERIS SHS USD Put 30,000 4,573 n/a n/a n/a
2018-08-14 2018-06-30 13F STERIS SHS USD Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-15 2018-03-31 13F STERIS SHS USD Put 108,700 10,148 n/a n/a n/a
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.