Illumina
ILMN
739 hedge funds and large institutions have $14.8B invested in Illumina in 2025 Q2 according to their latest regulatory filings, with 117 funds opening new positions, 279 increasing their positions, 234 reducing their positions, and 96 closing their positions.
504% more call options, than puts
Call options by funds: $724M | Put options by funds: $120M
22% more first-time investments, than exits
New positions opened: 117 | Existing positions closed: 96
21% more capital invested
Capital invested by funds: $12.3B → $14.8B (+$2.54B)
19% more repeat investments, than reductions
Existing positions increased: 279 | Existing positions reduced: 234
2% more funds holding
Funds holding: 723 → 739 (+16)
0.38% more ownership
Funds ownership: 97.84% → 98.23% (+0.38%)
0% more funds holding in top 10
Funds holding in top 10: 11 → 11 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SC
Sessa Capital
New York
|
+$383M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
+$95.3M |
| 3 |
EDRH
Edmond de Rothschild Holding
Chambesy,
Switzerland
|
+$67.7M |
| 4 |
Thrivent Financial for Lutherans
Minneapolis,
Minnesota
|
+$55.6M |
| 5 |
BlackRock
New York
|
+$50.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital World Investors
Los Angeles,
California
|
-$183M |
| 2 |
Brown Advisory
Baltimore,
Maryland
|
-$177M |
| 3 |
Baillie Gifford & Co
Edinburgh,
United Kingdom
|
-$103M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
-$98.9M |
| 5 |
SEP
Soma Equity Partners
San Francisco,
California
|
-$74.1M |
ILMN Hedge Fund Activity: Q2 2025 in Review
739 of the 7,613 institutional investors tracked by Wall St. Rank reported a position in Illumina (ILMN) for Q2 2025, worth a combined $14.8B — up 21% from $12.3B a quarter earlier.
Buyers outnumbered sellers: 117 funds opened new ILMN positions and 96 closed out — a net gain of 21 holders — while 279 added to existing stakes and 234 trimmed.
The largest buyer was Sessa Capital, opening a new position worth an estimated $383M. The largest seller was Capital World Investors, cutting an estimated $183M.
- 739 institutional investors held Illumina (ILMN) as of Q2 2025, up from 723 in Q1 2025.
- Funds reported $14.8B of Illumina stock for Q2 2025, up 21% quarter-over-quarter.
- 117 funds opened new Illumina positions in Q2 2025 and 96 closed out, a net change of +21 holders.
- The largest Illumina buyer in Q2 2025 was Sessa Capital, an estimated $383M added.
- The largest Illumina seller in Q2 2025 was Capital World Investors, an estimated $183M sold.
Based on aggregated 13F filings for Q2 2025.