중앙증권공사
US ˙ NYSEAM ˙ US1551231020

SecurityCET / Central Securities Corporation
InstitutionCss Llc/il
Latest Disclosed Ownership42,607 shares
Latest Disclosed Value $ 2,115,864
Css Llc/il ownership in CET / Central Securities Corporation

On May 15, 2026 - Css Llc/il filed a 13F-HR form disclosing ownership of 42,607 shares of Central Securities Corporation (US:CET) valued at $2,115,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,607 shares of Central Securities Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $2,236,868 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 CENTRAL SECS COM 155123102 42,607 0 0.00 2,116 -2.08 0.1013
2026-02-17 2025-12-31 13F CENTRAL SECS COM 155123102 42,607 0 0.00 2,161 -1.28 0.0960
2025-11-13 2025-09-30 13F CENTRAL SECS COM 155123102 42,607 0 0.00 2,189 7.31 0.0982
2025-08-14 2025-06-30 13F CENTRAL SECS COM 155123102 42,607 0 0.00 2,039 6.48 0.0951
2025-05-15 2025-03-31 13F CENTRAL SECS COM 155123102 42,607 0 0.00 1,916 -1.59 0.1051
2025-02-18 2024-12-31 13F CENTRAL SECS COM 155123102 42,607 0 0.00 1,947 -0.36 0.0859
2024-11-14 2024-09-30 13F CENTRAL SECS COM 155123102 42,607 0 0.00 1,953 4.16 0.0894
2024-08-14 2024-06-30 13F CENTRAL SECS COM 155123102 42,607 0 0.00 1,876 5.40 0.0959
2024-05-15 2024-03-31 13F CENTRAL SECS COM 155123102 42,607 0 0.00 1,780 10.57 0.1027
2024-02-14 2023-12-31 13F CENTRAL SECS COM 155123102 42,607 1,828 4.48 1,609 11.35 0.0930
2023-11-14 2023-09-30 13F CENTRAL SECS COM 155123102 40,779 0 0.00 1,446 -2.89 0.0948
2023-08-14 2023-06-30 13F CENTRAL SECS COM 155123102 40,779 0 0.00 1,489 4.94 0.0921
2023-05-15 2023-03-31 13F CENTRAL SECS COM 155123102 40,779 0 0.00 1,418 4.19 0.0936
2023-02-14 2022-12-31 13F CENTRAL SECS COM 155123102 40,779 2,909 7.68 1,362 6.49 0.0771
2022-11-14 2022-09-30 13F CENTRAL SECS COM 155123102 37,870 0 0.00 1,278 -4.13 0.0601
2022-08-15 2022-06-30 13F CENTRAL SECS COM 155123102 37,870 0 0.00 1,333 -14.93 0.0544
2022-05-16 2022-03-31 13F CENTRAL SECS COM 155123102 37,870 3,254 9.40 1,567 1.56 0.0567
2022-02-14 2021-12-31 13F CENTRAL SECS COM 155123102 34,616 -2,100 -5.72 1,543 -0.52 0.0548
2021-11-15 2021-09-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,551 0.13 0.0660
2021-08-16 2021-06-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,549 11.28 0.0641
2021-05-17 2021-03-31 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,392 16.19 0.0573
2021-02-16 2020-12-31 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,198 12.59 0.0459
2020-11-16 2020-09-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,064 0.47 0.0503
2020-08-14 2020-06-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,059 11.71 0.0600
2020-05-15 2020-03-31 13F CENTRAL SECS COM 155123102 36,716 0 0.00 948 -21.98 0.0748
2020-02-14 2019-12-31 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,215 5.38 0.0673
2019-11-14 2019-09-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,153 2.85 0.0741
2019-08-14 2019-06-30 13F CENTRAL SECS COM 155123102 36,716 0 0.00 1,121 6.56 0.0644
2019-05-15 2019-03-31 13F CENTRAL SECS COM 155123102 36,716 62 0.17 1,052 15.60 0.0631
2019-02-14 2018-12-31 13F CENTRAL SECS COM 155123102 36,654 1,496 4.26 910 -12.25 0.0610
2018-11-14 2018-09-30 13F CENTRAL SECS COM 155123102 35,158 0 0.00 1,037 5.82 0.0442
2018-08-14 2018-06-30 13F CENTRAL SECS COM 155123102 35,158 0 0.00 980 4.59 0.0459
2018-05-15 2018-03-31 13F CENTRAL SECS COM 155123102 35,158 0 0.00 937 -2.70 0.0466
2018-02-14 2017-12-31 13F CENTRAL SECS COM 155123102 35,158 1,022 2.99 963 9.18 0.0474
2017-11-14 2017-09-30 13F CENTRAL SECS COM 155123102 34,136 0 0.00 882 3.64 0.0431
2017-08-14 2017-06-30 13F CENTRAL SECS COM 155123102 34,136 0 0.00 851 4.03 0.0413
2017-05-15 2017-03-31 13F CENTRAL SECS COM 155123102 34,136 0 0.00 818 9.95 0.0490
2017-02-14 2016-12-31 13F CENTRAL SECS COM 155123102 34,136 1,199 3.64 744 6.29 0.0406
2016-11-14 2016-09-30 13F CENTRAL SECS COM 155123102 32,937 0 0.00 700 8.19 0.0339
2016-08-15 2016-06-30 13F CENTRAL SECS COM 155123102 32,937 0 0.00 647 2.70 0.0433
2016-05-16 2016-03-31 13F CENTRAL SECS COM 155123102 32,937 0 0.00 630 0.64 0.0387
2016-02-16 2015-12-31 13F CENTRAL SECS COM 155123102 32,937 2,737 9.06 626 4.86 0.0372
2015-11-16 2015-09-30 13F CENTRAL SECS COM 155123102 30,200 0 0.00 597 -7.30 0.0351
2015-08-14 2015-06-30 13F CENTRAL SECS COM 155123102 30,200 0 0.00 644 -2.13 0.0300
2015-05-15 2015-03-31 13F CENTRAL SECS COM 155123102 30,200 0 0.00 658 -0.75 0.0334
2015-02-17 2014-12-31 13F CENTRAL SECS COM 155123102 30,200 1,976 7.00 663 2.16 0.0329
2014-11-14 2014-09-30 13F CENTRAL SECS COM 155123102 28,224 0 0.00 649 -1.96 0.0315
2014-08-14 2014-06-30 13F CENTRAL SECS COM 155123102 28,224 0 0.00 662 4.91 0.0275
2014-05-15 2014-03-31 13F CENTRAL SECS COM 155123102 28,224 0 0.00 631 2.94 0.0318
2014-02-14 2013-12-31 13F CENTRAL SECS COM 155123102 28,224 28,224 613 0.0294
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.