Centene Corporation
US ˙ NYSE ˙ US15135B1017

SecurityCNC / Centene Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership865,760 shares
Latest Disclosed Value $ 28,343,578
Janus Henderson Group Plc reports 3.77% increase in ownership of CNC / Centene Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 865,760 shares of Centene Corporation (US:CNC) valued at $28,344,982 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 834,275 shares of Centene Corporation. This represents a change in shares of 3.77% during the quarter. The current value of the position is $54,283,152 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)
2026-05-18 2026-03-31 13F/A-1 CENTENE CORP DEL COM 15135B101 865,760 31,485 3.77 28,344 -17.44 0.0048
2026-05-15 2026-03-31 13F CENTENE CORP DEL COM 15135B101 865,760 31,485 3.77 28,344 -17.44 0.0053
2026-02-17 2025-12-31 13F CENTENE CORP DEL COM 15135B101 834,275 -3,869 -0.46 34,331 14.80 0.0154
2025-11-14 2025-09-30 13F CENTENE CORP DEL COM 15135B101 838,144 -53,244 -5.97 29,905 -38.19 0.0137
2025-08-14 2025-06-30 13F CENTENE CORP DEL COM 15135B101 891,388 -32,591 -3.53 48,384 -12.78 0.0237
2025-05-15 2025-03-31 13F CENTENE CORP DEL COM 15135B101 923,979 138,619 17.65 55,475 16.60 0.0304
2025-02-14 2024-12-31 13F CENTENE CORP DEL COM 15135B101 785,360 -86,712 -9.94 47,577 -27.53 0.0242
2024-11-14 2024-09-30 13F CENTENE CORP DEL COM 15135B101 872,072 -260,785 -23.02 65,648 -12.60 0.0336
2024-08-14 2024-06-30 13F CENTENE CORP DEL COM 15135B101 1,132,857 -284,110 -20.05 75,109 -32.45 0.0402
2024-05-15 2024-03-31 13F CENTENE CORP DEL COM 15135B101 1,416,967 -78,100 -5.22 111,198 0.23 0.0607
2024-02-14 2023-12-31 13F CENTENE CORP DEL COM 15135B101 1,495,067 -153,745 -9.32 110,946 -2.31 0.0662
2023-11-14 2023-09-30 13F CENTENE CORP DEL COM 15135B101 1,648,812 -1,717,198 -51.02 113,570 -49.98 0.0744
2023-08-14 2023-06-30 13F CENTENE CORP DEL COM 15135B101 3,366,010 -190,268 -5.35 227,037 1.00 0.1412
2023-05-15 2023-03-31 13F CENTENE CORP DEL COM 15135B101 3,556,278 310,443 9.56 224,791 -15.55 0.1482
2023-02-14 2022-12-31 13F CENTENE CORP DEL COM 15135B101 3,245,835 -247,427 -7.08 266,191 -2.07 0.1902
2023-01-13 2022-09-30 13F/A-1 CENTENE CORP DEL COM 15135B101 3,493,262 455,665 15.00 271,815 5.76 0.2037
2022-11-14 2022-09-30 13F CENTENE CORP DEL COM 15135B101 3,493,262 455,665 271,815 0.2035
2022-08-15 2022-06-30 13F CENTENE CORP DEL COM 15135B101 3,037,597 -377,013 -11.04 257,017 -10.60 0.1772
2022-05-16 2022-03-31 13F CENTENE CORP DEL COM 15135B101 3,414,610 -181,263 -5.04 287,477 -2.98 0.1388
2022-02-14 2021-12-31 13F CENTENE CORP DEL COM 15135B101 3,595,873 76,000 2.16 296,300 35.10 0.1236
2021-11-16 2021-09-30 13F CENTENE CORP DEL COM 15135B101 3,519,873 121,892 3.59 219,322 -11.50 0.0959
2021-08-16 2021-06-30 13F CENTENE CORP DEL COM 15135B101 3,397,981 -3,687 -0.11 247,813 13.99 0.1061
2021-05-17 2021-03-31 13F CENTENE CORP DEL COM 15135B101 3,401,668 240,226 7.60 217,402 14.55 0.0993
2021-02-16 2020-12-31 13F CENTENE CORP DEL COM 15135B101 3,161,442 -1,560,022 -33.04 189,781 -31.09 0.0882
2020-11-16 2020-09-30 13F CENTENE CORP DEL COM 15135B101 4,721,464 -1,683,704 -26.29 275,403 -32.34 0.1436
2020-08-14 2020-06-30 13F CENTENE CORP DEL COM 15135B101 6,405,168 -126,868 -1.94 407,051 4.89 0.2285
2020-05-14 2020-03-31 13F CENTENE CORP DEL COM 15135B101 6,532,036 5,015,840 330.82 388,066 307.11 0.2671
2020-02-18 2019-12-31 13F CENTENE CORP DEL COM 15135B101 1,516,196 -434,570 -22.28 95,322 12.95 0.0488
2019-11-14 2019-09-30 13F CENTENE CORP DEL COM 15135B101 1,950,766 -1,114,196 -36.35 84,390 -47.49 0.0457
2019-07-31 2019-06-30 13F CENTENE CORP DEL COM 15135B101 3,064,962 -1,592,172 -34.19 160,725 -35.01 0.0875
2019-04-30 2019-03-31 13F CENTENE CORP DEL COM 15135B101 4,657,134 2,484,279 114.33 247,296 -1.29 0.1371
2019-02-06 2018-12-31 13F CENTENE CORP DEL COM 15135B101 2,172,855 462,701 27.06 250,532 1.19 0.1598
2018-11-09 2018-09-30 13F CENTENE CORP DEL COM 15135B101 1,710,154 40,414 2.42 247,596 20.35 0.1323
2018-08-10 2018-06-30 13F CENTENE CORP DEL COM 15135B101 1,669,740 -40,825 -2.39 205,730 12.54 0.1173
2018-05-14 2018-03-31 13F CENTENE CORP DEL COM 15135B101 1,710,565 260,900 18.00 182,806 25.00 0.1077
2018-03-12 2017-12-31 13F/A-1 CENTENE CORP DEL COM 15135B101 1,449,665 995,600 219.26 146,244 232.83 0.0901
2018-02-09 2017-12-31 13F CENTENE CORP DEL COM 15135B101 1,449,665 995,600 146,244
2017-11-14 2017-09-30 13F CENTENE CORP DEL COM 15135B101 454,065 351,195 341.40 43,940 434.81 0.0282
2017-08-17 2017-06-30 13F/A-1 CENTENE CORP DEL COM 15135B101 102,870 78,409 320.55 8,216 371.37 0.0056
2017-08-14 2017-06-30 13F CENTENE CORP DEL COM 15135B101 102,870 78,409 8,216
2017-05-03 2017-03-31 13F CENTENE CORP DEL COM 15135B101 24,461 0 0.00 1,743 26.12 0.0122
2017-01-30 2016-12-31 13F CENTENE CORP DEL COM 15135B101 24,461 2,300 10.38 1,382 -6.87 0.0102
2016-10-24 2016-09-30 13F CENTENE CORP DEL COM 15135B101 22,161 6,773 44.01 1,484 35.15 0.0109
2016-07-29 2016-06-30 13F CENTENE CORP DEL COM 15135B101 15,388 0 0.00 1,098 15.95 0.0091
2016-05-12 2016-03-31 13F CENTENE CORP DEL COM 15135B101 15,388 0 0.00 947 -6.52 0.0077
2016-02-03 2015-12-31 13F CENTENE CORP DEL COM 15135B101 15,388 0 0.00 1,013 21.32 0.0081
2015-11-16 2015-09-30 13F CENTENE CORP DEL COM 15135B101 15,388 6,040 64.61 835 11.19 0.0074
2015-08-17 2015-06-30 13F CENTENE CORP DEL COM 15135B101 9,348 9,348 751 0.0059
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.