Seaboard Corporation
US ˙ NYSEAM ˙ US8115431079

SecuritySEB / Seaboard Corporation
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership285 shares
Latest Disclosed Value $ 1,266,774
Alliancebernstein L.p. reports 418.18% increase in ownership of SEB / Seaboard Corporation

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 285 shares of Seaboard Corporation (US:SEB) valued at $1,611,396 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 55 shares of Seaboard Corporation. This represents a change in shares of 418.18% during the quarter. The current value of the position is $1,498,558 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 SEABOARD CORP DEL COM 811543107 285 230 418.18 1,267 418.85 0.0004
2026-02-17 2025-12-31 13F SEABOARD CORP DEL COM 811543107 55 55 244 0.0001
2024-05-14 2024-03-31 13F SEABOARD CORP DEL COM 811543107 0 -183 -100.00 0 -100.00
2024-02-14 2023-12-31 13F SEABOARD CORP DEL COM 811543107 183 -33 -15.28 653 -19.38 0.0003
2023-11-14 2023-09-30 13F SEABOARD CORP DEL COM 811543107 216 48 28.57 811 35.45 0.0003
2023-08-15 2023-06-30 13F SEABOARD CORP DEL COM 811543107 168 107 175.41 598 161.14 0.0002
2023-05-15 2023-03-31 13F SEABOARD CORP DEL COM 811543107 61 1 1.67 230 1.33 0.0001
2023-02-15 2022-12-31 13F SEABOARD CORP DEL COM 811543107 60 -2 -3.23 227 7.11 0.0001
2022-11-15 2022-09-30 13F SEABOARD CORP DEL COM 811543107 62 -168 -73.04 211 -76.37 0.0001
2022-08-15 2022-06-30 13F SEABOARD CORP DEL COM 811543107 230 -1,705 -88.11 893 -89.03 0.0004
2022-05-13 2022-03-31 13F SEABOARD CORP DEL COM 811543107 1,935 1,759 999.43 8,138 1,074.31 0.0031
2022-02-14 2021-12-31 13F SEABOARD CORP DEL COM 811543107 176 -65 -26.97 693 -29.86 0.0002
2021-11-10 2021-09-30 13F SEABOARD CORP DEL COM 811543107 241 50 26.18 988 33.69 0.0004
2021-07-30 2021-06-30 13F SEABOARD CORP DEL COM 811543107 191 -51 -21.07 739 -17.25 0.0003
2021-05-06 2021-03-31 13F SEABOARD CORP DEL COM 811543107 242 1 0.41 893 22.33 0.0004
2021-02-08 2020-12-31 13F SEABOARD CORP DEL COM 811543107 241 0 0.00 730 6.73 0.0003
2020-11-12 2020-09-30 13F SEABOARD COM 811543107 241 -98 -28.91 684 -31.26 0.0004
2020-08-13 2020-06-30 13F SEABOARD COM 811543107 339 100 41.84 995 48.07 0.0006
2020-05-14 2020-03-31 13F SEABOARD COM 811543107 239 6 2.58 672 -32.12 0.0005
2020-02-18 2019-12-31 13F SEABOARD COM 811543107 233 -35 -13.06 990 -15.60 0.0006
2019-11-14 2019-09-30 13F SEABOARD COM 811543107 268 31 13.08 1,173 19.69 0.0007
2019-08-14 2019-06-30 13F SEABOARD COM 811543107 237 -82 -25.71 980 -28.31 0.0006
2019-05-14 2019-03-31 13F SEABOARD COM 811543107 319 1 0.31 1,367 21.51 0.0009
2019-02-13 2018-12-31 13F SEABOARD COM 811543107 318 41 14.80 1,125 9.44 0.0008
2018-11-08 2018-09-30 13F SEABOARD COM 811543107 277 -100 -26.53 1,028 -31.19 0.0007
2018-08-13 2018-06-30 13F SEABOARD COM 811543107 377 116 44.44 1,494 34.23 0.0010
2018-05-14 2018-03-31 13F SEABOARD COM 811543107 261 0 0.00 1,113 -3.30 0.0008
2018-02-13 2017-12-31 13F SEABOARD COM 811543107 261 -99 -27.50 1,151 -29.04 0.0008
2017-11-13 2017-09-30 13F SEABOARD COM 811543107 360 35 10.77 1,622 24.96 0.0012
2017-08-10 2017-06-30 13F SEABOARD COM 811543107 325 16 5.18 1,298 0.78 0.0010
2017-05-11 2017-03-31 13F SEABOARD COM 811543107 309 -910 -74.65 1,288 -73.26 0.0010
2017-02-13 2016-12-31 13F SEABOARD COM 811543107 1,219 -95 -7.23 4,817 6.57 0.0040
2016-11-10 2016-09-30 13F SEABOARD COM 811543107 1,314 450 52.08 4,520 82.26 0.0038
2016-08-11 2016-06-30 13F SEABOARD COM 811543107 864 240 38.46 2,480 32.34 0.0021
2016-05-13 2016-03-31 13F SEABOARD COM 811543107 624 120 23.81 1,874 28.44 0.0016
2016-02-16 2015-12-31 13F/A-1 SEABOARD COM 811543107 504 0 0.00 1,459 -5.99 0.0012
2016-02-12 2015-12-31 13F SEABOARD COM 811543107 504 1,552
2015-11-13 2015-09-30 13F SEABOARD COM 811543107 504 0 0.00 1,552 -14.44 0.0013
2015-08-14 2015-06-30 13F SEABOARD COM 811543107 504 100 24.75 1,814 8.69 0.0015
2015-05-13 2015-03-31 13F SEABOARD COM 811543107 404 0 0.00 1,669 -1.59 0.0014
2015-02-13 2014-12-31 13F SEABOARD COM 811543107 404 -97 -19.36 1,696 26.57 0.0014
2014-11-13 2014-09-30 13F SEABOARD COM 811543107 501 -200 -28.53 1,340 -36.70 0.0011
2014-08-13 2014-06-30 13F SEABOARD COM 811543107 701 148 26.76 2,117 46.00 0.0018
2014-05-13 2014-03-31 13F SEABOARD COM 811543107 553 101 22.35 1,450 14.81 0.0013
2014-02-13 2013-12-31 13F SEABOARD COM 811543107 452 -101 -18.26 1,263 -16.91 0.0011
2013-11-14 2013-09-30 13F SEABOARD COM 811543107 553 -52 -8.60 1,520 -7.20 0.0015
2013-08-13 2013-06-30 13F SEABOARD COM 811543107 605 605 1,638 0.0017
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.