Blackrock Inc.
Rank #1
12.7%
- Shares
- 19.19M
- Change %
- +0.88%
- Filing
- Jun 30, 2026
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
Holders
Illumina Inc. (ILMN) Institutional Ownership & Insider Trading History
Top ILMN institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Prices as of Sep 8, 11:16 AM EDT · Fundamentals checked Sep 8, 11:16 AM EDT · Statements Jun 28, 2026
Ownership read
ILMN insider sentiment: Mixed, sale-heavy.
Blackrock Inc. is the largest institutional holder. 18 sales and 4 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
ILMN
Purchases19.15K
Sales3.07M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
19.19M
Blackrock Inc.
Insider stance
Mixed, sale-heavy
$592.86M sold / $1.58M bought
Latest filing
Sep 4, 2026
Most recent holder or insider filing date
Filings shown
110
30 holder / 80 insider
- Holder rows
- 30
- Market data source
- Latest filing
- Sep 4, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 8
- 8 decreased
- Insider rows
- 80
- Market data source
Top 30 institutional holders
Illumina Inc. (ILMN) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.
Capital World Investors
Rank #2
10.2%
- Shares
- 15.43M
- Change %
- -0.80%
- Filing
- Jun 30, 2026
Decreased
Vanguard Portfolio Management LLC
Rank #3
4.39%
- Shares
- 6.63M
- Change %
- -2.88%
- Filing
- Jun 30, 2026
Decreased
Vanguard Capital Management LLC
Rank #4
4.36%
- Shares
- 6.59M
- Change %
- -0.11%
- Filing
- Jun 30, 2026
Decreased
State Street Corporation
Rank #5
4.31%
- Shares
- 6.51M
- Change %
- +1.21%
- Filing
- Jun 30, 2026
Increased
WCM Investment Management, LLC
Rank #6
4.11%
- Shares
- 6.21M
- Change %
- +4.79%
- Filing
- Jun 30, 2026
Increased
FMR, LLC
Rank #7
3.00%
- Shares
- 4.52M
- Change %
- +192.43%
- Filing
- Jun 30, 2026
Increased
AQR Capital Management, LLC
Rank #8
2.35%
- Shares
- 3.54M
- Change %
- -10.97%
- Filing
- Jun 30, 2026
Decreased
Primecap Management Company
Rank #9
2.33%
- Shares
- 3.51M
- Change %
- +70.01%
- Filing
- Jun 30, 2026
Increased
Geode Capital Management, LLC
Rank #10
1.95%
- Shares
- 2.95M
- Change %
- -3.43%
- Filing
- Jun 30, 2026
Decreased
iShares Trust-iShares Core S&P Mid-Cap ETF
Rank #11
3.44%
- Shares
- 5.20M
- Change %
- +0.37%
- Filing
- Jul 31, 2026
Increased
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund
Rank #12
3.02%
- Shares
- 4.56M
- Change %
- -0.83%
- Filing
- Jun 30, 2026
Decreased
AMERICAN BALANCED FUND
Rank #13
2.31%
- Shares
- 3.49M
- Change %
- -2.79%
- Filing
- Jun 30, 2026
Decreased
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund
Rank #14
2.18%
- Shares
- 3.30M
- Change %
- -1.57%
- Filing
- Jun 30, 2026
Decreased
Growth Fund of America
Rank #15
1.82%
- Shares
- 2.74M
- Change %
- 0.00%
- Filing
- Jun 30, 2026
Unchanged
New Economy Fund
Rank #16
1.78%
- Shares
- 2.68M
- Change %
- 0.00%
- Filing
- Jun 30, 2026
Unchanged
WASHINGTON MUTUAL INVESTORS FUND
Rank #17
1.26%
- Shares
- 1.90M
- Change %
- 0.00%
- Filing
- Jun 30, 2026
Unchanged
VANGUARD HORIZON FUNDS-Vanguard Capital Opportunity Fund
Rank #18
1.17%
- Shares
- 1.76M
- Change %
- +41.47%
- Filing
- Jun 30, 2026
Increased
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund
Rank #19
1.15%
- Shares
- 1.74M
- Change %
- +1.67%
- Filing
- Jun 30, 2026
Increased
NEW PERSPECTIVE FUND
Rank #20
0.93%
- Shares
- 1.40M
- Change %
- 0.00%
- Filing
- Jun 30, 2026
Unchanged
| # | Institution | % held | Shares | Filing date |
|---|---|---|---|---|
| 1 | 12.7% | 19.19M | Jun 30, 2026 | |
| 2 | 10.2% | 15.43M | Jun 30, 2026 | |
| 3 | 4.39% | 6.63M | Jun 30, 2026 | |
| 4 | 4.36% | 6.59M | Jun 30, 2026 | |
| 5 | 4.31% | 6.51M | Jun 30, 2026 | |
| 6 | WCM Investment Management, LLC | 4.11% | 6.21M | Jun 30, 2026 |
| 7 | 3.00% | 4.52M | Jun 30, 2026 | |
| 8 | AQR Capital Management, LLC | 2.35% | 3.54M | Jun 30, 2026 |
| 9 | Primecap Management Company | 2.33% | 3.51M | Jun 30, 2026 |
| 10 | 1.95% | 2.95M | Jun 30, 2026 | |
| 11 | iShares Trust-iShares Core S&P Mid-Cap ETF | 3.44% | 5.20M | Jul 31, 2026 |
| 12 | 3.02% | 4.56M | Jun 30, 2026 | |
| 13 | AMERICAN BALANCED FUND | 2.31% | 3.49M | Jun 30, 2026 |
| 14 | 2.18% | 3.30M | Jun 30, 2026 | |
| 15 | Growth Fund of America | 1.82% | 2.74M | Jun 30, 2026 |
| 16 | New Economy Fund | 1.78% | 2.68M | Jun 30, 2026 |
| 17 | WASHINGTON MUTUAL INVESTORS FUND | 1.26% | 1.90M | Jun 30, 2026 |
| 18 | 1.17% | 1.76M | Jun 30, 2026 | |
| 19 | 1.15% | 1.74M | Jun 30, 2026 | |
| 20 | NEW PERSPECTIVE FUND | 0.93% | 1.40M | Jun 30, 2026 |
Showing 20 of 30 matching institutional rows.
Recent insider transactions
Illumina Inc. (ILMN) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
MEISTER KEITH A
Director
- Shares
- 263.56K
- % company
- 0.17%
- Price
- $217.03
- Value
- $57,199,201
Filed Sep 4, 2026
MEISTER KEITH A
Director
- Shares
- 375.94K
- % company
- 0.25%
- Price
- $226.74
- Value
- $85,241,664
Filed Aug 27, 2026
MEISTER KEITH A
Director
- Shares
- 679.57K
- % company
- 0.45%
- Price
- $214.19
- Value
- $145,556,398
Filed Aug 21, 2026
WEDEL CHRISTENSEN JAKOB
Officer
- Shares
- 1.03K
- % company
- <0.01%
- Price
- $191.52
- Value
- $197,840
Filed Aug 18, 2026
SULLIVAN MICHAEL C
Officer
- Shares
- 4.50K
- % company
- <0.01%
- Price
- $199.87
- Value
- $900,015
Filed Aug 5, 2026
MEISTER KEITH A
Director
- Shares
- 741.13K
- % company
- 0.49%
- Price
- $199.91
- Value
- $148,159,897
Filed Aug 5, 2026
DAVIES SCOTT M
Officer
- Shares
- 615
- % company
- <0.01%
- Price
- $200.00
- Value
- $123,000
Filed Jul 30, 2026
ULLEM SCOTT B
Director
- Shares
- 167
- % company
- <0.01%
- Price
- $149.19
- Value
- $24,914
Filed Jun 30, 2026
MEISTER KEITH A
Director
- Shares
- 142
- % company
- <0.01%
- Price
- $149.19
- Value
- $21,185
Filed Jun 30, 2026
DAVIES SCOTT M
Officer
- Shares
- 615
- % company
- <0.01%
- Price
- $180.00
- Value
- $110,700
Filed Jun 25, 2026
SKOVRONSKY DANIEL
Director
- Shares
- 1.67K
- % company
- <0.01%
- Price
- $164.28
- Value
- $275,005
Filed Jun 16, 2026
LECKMAN PATRICIA L
Officer
- Shares
- 783
- % company
- <0.01%
- Price
- $162.59
- Value
- $127,305
Filed Jun 5, 2026
| # | Insider | % company | Action | Shares | Filing date |
|---|---|---|---|---|---|
| 1 | MEISTER KEITH A Director | 0.17% | SaleOpen-market or direct sale reported on Form 4. | 263.56K | Sep 4, 2026 |
| 2 | MEISTER KEITH A Director | 0.25% | SaleOpen-market or direct sale reported on Form 4. | 375.94K | Aug 27, 2026 |
| 3 | MEISTER KEITH A Director | 0.45% | SaleOpen-market or direct sale reported on Form 4. | 679.57K | Aug 21, 2026 |
| 4 | WEDEL CHRISTENSEN JAKOB Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 1.03K | Aug 18, 2026 |
| 5 | SULLIVAN MICHAEL C Officer | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 4.50K | Aug 5, 2026 |
| 6 | MEISTER KEITH A Director | 0.49% | SaleOpen-market or direct sale reported on Form 4. | 741.13K | Aug 5, 2026 |
| 7 | DAVIES SCOTT M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 615 | Jul 30, 2026 |
| 8 | ULLEM SCOTT B Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 167 | Jun 30, 2026 |
| 9 | MEISTER KEITH A Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 142 | Jun 30, 2026 |
| 10 | DAVIES SCOTT M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 615 | Jun 25, 2026 |
| 11 | SKOVRONSKY DANIEL Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 1.67K | Jun 16, 2026 |
| 12 | LECKMAN PATRICIA L Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 783 | Jun 5, 2026 |
Showing 12 of 80 matching Form 4 rows. Percent of company uses current shares outstanding.
Frequently asked
Common questions.
Who are the largest ILMN shareholders?
Blackrock Inc. is the largest reported institutional holder of ILMN, with 19.19 million shares, or about 12.71% of shares outstanding.
What does the institutional filing activity show for ILMN?
Illumina Inc. has 30 institutional rows on file: 8 increased or initiated positions and 8 reduced them as of Sep 4, 2026.
What insider transactions are available for ILMN?
TECHi shows 80 dated ILMN insider transactions through Sep 4, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.
Are ILMN insiders buying or selling?
The displayed ILMN activity reads Mixed, sale-heavy: 18 sales and 4 purchases. Other transaction types remain separate.
Who is the most active reported ILMN insider?
MEISTER KEITH A has the largest absolute share movement in the displayed ILMN filing rows, totaling 3.43 million shares. The action labels provide the transaction context.