Sotera Health Company
US ˙ NasdaqGS ˙ US83601L1026

SecuritySHC / Sotera Health Company
InstitutionCitigroup Inc
Latest Disclosed Ownership115,349 shares
Latest Disclosed Value $ 1,654,105
Citigroup Inc ownership in SHC / Sotera Health Company

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 115,349 shares of Sotera Health Company (US:SHC) valued at $1,654,105 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 85,538 shares of Sotera Health Company. This represents a change in shares of 34.85% during the quarter. The current value of the position is $1,797,137 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (SHC) in the form of stock options. The firm currently holds call 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.

SHC / Sotera Health Company 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)
2026-05-11 2026-03-31 13F SOTERA HEALTH COM 83601L102 115,349 29,811 34.85 1,654 9.68 0.0004
2026-02-13 2025-12-31 13F SOTERA HEALTH COM 83601L102 85,538 65,508 327.05 1,509 378.73 0.0007
2025-11-10 2025-09-30 13F SOTERA HEALTH COM 83601L102 20,030 -4,776 -19.25 315 14.55 0.0001
2025-08-11 2025-06-30 13F SOTERA HEALTH COM 83601L102 24,806 -8,886 -26.37 276 -29.85 0.0001
2025-05-12 2025-03-31 13F SOTERA HEALTH COM 83601L102 33,692 -9,959 -22.82 393 -34.34 0.0002
2025-02-12 2024-12-31 13F SOTERA HEALTH COM 83601L102 43,651 13,353 44.07 597 18.22 0.0004
2024-11-12 2024-09-30 13F SOTERA HEALTH COM 83601L102 30,298 20,548 210.75 506 339.13 0.0003
2024-08-12 2024-06-30 13F SOTERA HEALTH COM 83601L102 9,750 -6,470 -39.89 116 -40.72 0.0001
2024-05-10 2024-03-31 13F SOTERA HEALTH COM 83601L102 16,220 -17,699 -52.18 195 -66.02 0.0001
2024-02-09 2023-12-31 13F SOTERA HEALTH COM 83601L102 33,919 30,919 1,030.63 572 1,197.73 0.0004
2023-12-06 2023-09-30 13F/A-1 SOTERA HEALTH COM 83601L102 3,000 -4,906 -62.05 45 -70.27 0.0000
2023-11-09 2023-09-30 13F SOTERA HEALTH COM 83601L102 3,000 -4,906 45 0.0000
2023-08-10 2023-06-30 13F SOTERA HEALTH COM 83601L102 7,906 -4,640 -36.98 149 -33.93 0.0001
2023-05-11 2023-03-31 13F SOTERA HEALTH COM 83601L102 12,546 -16,904 -57.40 225 -8.57 0.0002
2023-02-09 2022-12-31 13F SOTERA HEALTH COM 83601L102 29,450 71 0.24 245 21.89 0.0002
2022-11-10 2022-09-30 13F SOTERA HEALTH COM 83601L102 29,379 14,290 94.70 201 -32.09 0.0001
2022-08-10 2022-06-30 13F SOTERA HEALTH COM 83601L102 15,089 -65,343 -81.24 296 -83.01 0.0002
2022-05-12 2022-03-31 13F SOTERA HEALTH COM 83601L102 80,432 61,547 325.90 1,742 291.46 0.0011
2022-02-10 2021-12-31 13F SOTERA HEALTH COM 83601L102 18,885 7,846 71.08 445 53.98 0.0002
2021-11-10 2021-09-30 13F SOTERA HEALTH COM 83601L102 11,039 -48,234 -81.38 289 -79.87 0.0002
2021-08-10 2021-06-30 13F SOTERA HEALTH COM 83601L102 59,273 49,840 528.36 1,436 511.06 0.0009
2021-05-13 2021-03-31 13F SOTERA HEALTH COM 83601L102 9,433 8,498 908.88 235 803.85 0.0002
2021-02-11 2020-12-31 13F SOTERA HEALTH COM 83601L102 935 935 26 0.0000
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
(%)
2022-11-10 2022-09-30 13F SOTERA HEALTH COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-10 2022-06-30 13F SOTERA HEALTH COM Call 100,800 1,975 n/a n/a n/a
2022-02-10 2021-12-31 13F SOTERA HEALTH COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-10 2021-09-30 13F SOTERA HEALTH COM Call 93,500 2,445 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.