International Business Machines
Ownership
Ownership Structure
Who owns International Business Machines (IBM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.8% of the shares are freely tradable; institutional investors hold 65.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.12 | 76,763,481 | -1.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.50 | 61,385,366 | +0.9 | 06/30/2026 |
| State Street Corp | 5.93 | 56,045,055 | +2.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 3.00 | 28,348,295 | +2.5 | 06/30/2026 |
| Geode Capital Management, LLC | 2.48 | 23,448,500 | +1.6 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 1.85 | 17,459,828 | -11.1 | 06/30/2026 |
| Capital World Investors | 1.71 | 16,207,905 | -5.0 | 06/30/2026 |
| Bank of America Corp | 1.59 | 14,988,328 | -6.7 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.16 | 29,906,129 | +0.1 | 09/30/2026 |
| Vanguard 500 Index Investor | 2.62 | 24,743,034 | -0.9 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Thomas Robert David | Senior Vice President | 47,800 | 11,711,086 $ | Aug 26, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 26, 2026 | Thomas Robert David | Senior Vice President | Sell | 25,000 | 230.32 | 5,758,088 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 6, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.