International Business Machines Corporation (IBM) ownership: Top institutional holder: VANGUARD GROUP INC ($28.80B). Insider activity: Net Seller (0 buys, 20 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 97216131.00 | $28.80B | 2025-12-31 |
| BlackRock, Inc. | 77565953.00 | $18.80B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 60845605.00 | $14.75B | 2026-03-31 |
| STATE STREET CORP | 54594493.00 | $13.23B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 27660866.00 | $6.70B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 23076329.00 | $5.58B | 2026-03-31 |
| MORGAN STANLEY | 19630951.00 | $4.76B | 2026-03-31 |
| JPMORGAN CHASE & CO | 18544694.00 | $4.40B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.