The largest holder of Centene stock is BlackRock Advisors LLC, with 32.2 million shares (6.52% of the company), worth about $2.07 billion as of September 25, 2026. The 10 largest holders together own 40.1%.
In Q2 2026, 1,076 institutional holdings reports listed shares worth $32.90 billion.
Insiders reported 83 transactions in the last two years: 4 sales worth $14.63 million and 9 purchases. The newest one on file is from August 26, 2026 (Koster Christopher A., General Counsel).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through August 26, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 32.2 million | 6.52% | $2.1B |
| Vanguard Capital Management LLC | 31.5 million | 6.37% | $2.0B |
| AQR Capital Management LLC | 28.7 million | 5.80% | $1.8B |
| Vanguard Portfolio Management LLC | 22.4 million | 4.53% | $1.4B |
| State Street Corporation | 22.0 million | 4.45% | $1.4B |
| Geode Capital Management LLC | 13.3 million | 2.69% | $856.0M |
| Wellington Trust Co., NA | 13.3 million | 2.69% | $856.0M |
| Ameriprise Financial Services LLC | 12.4 million | 2.51% | $799.0M |
| Invesco Advisers, Inc. | 11.2 million | 2.26% | $719.0M |
| Harris Associates LP | 11.1 million | 2.25% | $716.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,076 | – | $32.9B |
| Q1 2026 | 923 | 474.0 million | $15.5B |
| Q4 2025 | 990 | 478.0 million | $19.7B |
| Q3 2025 | 931 | 462.0 million | $16.5B |
| Q2 2025 | 932 | 484.0 million | $26.2B |
| Q1 2025 | 965 | 487.0 million | $29.6B |
| Q4 2024 | 936 | 482.0 million | $29.2B |
| Q3 2024 | 940 | 502.0 million | $37.8B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Koster Christopher A. | Aug 26, 2026 | General Counsel | Sale at price 66.90 per share. | $3.8M |
| Koster Christopher A. | Aug 18, 2026 | General Counsel | Sale at price 65.36 per share. | $3.1M |
| Diaz Paul J | Jul 28, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Tyler Lauren M. | Jul 17, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Tanji Kenneth Y. | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Samuels Theodore R Ii | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Eppinger Frederick H | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Coughlin Christopher J | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Tyler Lauren M. | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Burdick Kenneth A | Jun 10, 2026 | Director | Sale at price 64.55 per share. | $5.2M |
| Coughlin Christopher J | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Samuels Theodore R Ii | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 83 insider transactions in the last two years.
BlackRock Advisors LLC, with 6.52% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.37%) and AQR Capital Management LLC (5.80%).
1,076 institutional holdings reports listed Centene shares in Q2 2026 worth $32.90 billion.
In the last two years insiders reported 4 sales and 9 purchases (83 transactions in all); the newest on file is from August 26, 2026.