The largest holder of Lumentum stock is BlackRock Advisors LLC, with 6.6 million shares (9.36% of the company), worth about $6.07 billion as of September 25, 2026. The 10 largest holders together own 51.4%.
In Q2 2026, 1,421 institutional holdings reports listed shares worth $70.70 billion.
Insiders reported 82 transactions in the last two years: 45 sales worth $86.29 million and no purchases. The newest one on file is from May 18, 2026 (Retort Vincent D, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 18, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 6.6 million | 9.36% | $6.1B |
| Vanguard Capital Management LLC | 5.1 million | 7.16% | $4.6B |
| Vanguard Portfolio Management LLC | 4.1 million | 5.77% | $3.7B |
| JPMorgan Investment Management, Inc. | 4.1 million | 5.72% | $3.7B |
| Fidelity Management & Research Co. LLC | 3.5 million | 4.96% | $3.2B |
| State Street Corporation | 3.5 million | 4.87% | $3.2B |
| Invesco Advisers, Inc. | 3.2 million | 4.48% | $2.9B |
| BlackRock Life Ltd. | 2.3 million | 3.25% | $2.1B |
| Geode Capital Management LLC | 2.2 million | 3.17% | $2.1B |
| Janus Henderson Investors US LLC | 1.9 million | 2.67% | $1.7B |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,421 | – | $70.7B |
| Q1 2026 | 1,174 | 77.2 million | $54.1B |
| Q4 2025 | 821 | 81.3 million | $30.0B |
| Q3 2025 | 653 | 80.6 million | $13.0B |
| Q2 2025 | 532 | 84.6 million | $8.0B |
| Q1 2025 | 457 | 82.1 million | $5.1B |
| Q4 2024 | 493 | 74.8 million | $6.2B |
| Q3 2024 | 425 | 74.2 million | $4.7B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Retort Vincent D | May 18, 2026 | Officer | Sale at price 953.95 per share. | $3.0M |
| Fletcher Pamela | May 15, 2026 | Director | Sale at price 940.82 - 1003.38 per share. | $3.1M |
| Lillie Brian J | May 11, 2026 | Director | Sale at price 950.99 - 1003.62 per share. | $11.7M |
| Lillie Brian J | May 11, 2026 | Director | Sale at price 1004.34 per share. | $49,212 |
| Kim Jae | May 11, 2026 | General Counsel | Sale at price 950.99 per share. | $1.8M |
| Small Ian Seymour | May 8, 2026 | Director | Sale at price 910.72 - 912.26 per share. | $3.2M |
| Ali Wajid | Feb 27, 2026 | Chief Financial Officer | Sale at price 677.78 - 699.28 per share. | $3.7M |
| Harris Isaac Hosojiro | Feb 27, 2026 | Officer and Director | Stock Award(Grant) at price 0.00 per share. | – |
| Retort Vincent D | Feb 17, 2026 | Officer | Sale at price 530.80 - 557.84 per share. | $1.9M |
| Chang Eric | Feb 13, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Retort Vincent D | Feb 12, 2026 | Officer | Sale at price 576.35 - 601.82 per share. | $26.6M |
| Herscher Penelope A | Feb 12, 2026 | Director | Sale at price 594.42 - 602.63 per share. | $2.4M |
Newest 12 of 82 insider transactions in the last two years.
BlackRock Advisors LLC, with 9.36% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (7.16%) and Vanguard Portfolio Management LLC (5.77%).
1,421 institutional holdings reports listed Lumentum shares in Q2 2026 worth $70.70 billion.
In the last two years insiders reported 45 sales and no purchases (82 transactions in all); the newest on file is from May 18, 2026.