GlaxoSmithKline PLC
Ownership
Ownership Structure
Who owns GlaxoSmithKline PLC (GSK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.9% of the shares are freely tradable; institutional investors hold 18.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 3.38 | 67,661,646 | +0.3 | 03/31/2026 |
| Dodge & Cox | 2.41 | 48,197,514 | -17.8 | 06/30/2026 |
| Fisher Asset Management, LLC | 1.78 | 35,722,792 | +3.5 | 06/30/2026 |
| PRIMECAP Management Company | 1.26 | 25,182,068 | -0.1 | 06/30/2026 |
| Acadian Asset Management LLC | 0.59 | 11,797,085 | +1,169.9 | 03/31/2026 |
| Wellington Management Company LLP | 0.57 | 11,396,249 | -2.7 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 0.55 | 11,030,651 | +89.2 | 03/31/2026 |
| The Goldman Sachs Group Inc | 0.48 | 9,589,114 | +32.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Dodge & Cox Stock I | 1.69 | 33,782,987 | -21.4 | 06/30/2026 |
| Vanguard PRIMECAP Inv | 0.91 | 18,172,650 | +0.1 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 28, 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.