Illumina
ILMN
859 hedge funds and large institutions have $20.8B invested in Illumina in 2025 Q4 according to their latest regulatory filings, with 176 funds opening new positions, 302 increasing their positions, 271 reducing their positions, and 80 closing their positions.
195% more call options, than puts
Call options by funds: $406M | Put options by funds: $138M
120% more first-time investments, than exits
New positions opened: 176 | Existing positions closed: 80
44% more funds holding in top 10
Funds holding in top 10: 9 → 13 (+4)
39% more capital invested
Capital invested by funds: $14.9B → $20.8B (+$5.85B)
11% more repeat investments, than reductions
Existing positions increased: 302 | Existing positions reduced: 271
11% more funds holding
Funds holding: 777 → 859 (+82)
1.26% more ownership
Funds ownership: 102.26% → 103.52% (+1.3%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
+$159M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
+$121M |
| 3 |
Morgan Stanley
New York
|
+$118M |
| 4 |
Nordea Investment Management
Stockholm,
Sweden
|
+$107M |
| 5 |
Ameriprise
Minneapolis,
Minnesota
|
+$87.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SC
Sessa Capital
New York
|
-$151M |
| 2 |
PC
PointState Capital
New York
|
-$149M |
| 3 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$81.9M |
| 4 |
Teacher Retirement System of Texas
Austin,
Texas
|
-$60.9M |
| 5 |
WorldQuant Millennium Advisors
New York
|
-$48.7M |
ILMN Hedge Fund Activity: Q4 2025 in Review
859 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Illumina (ILMN) for Q4 2025, worth a combined $20.8B — up 39% from $14.9B a quarter earlier.
Buyers outnumbered sellers: 176 funds opened new ILMN positions and 80 closed out — a net gain of 96 holders — while 302 added to existing stakes and 271 trimmed.
The largest buyer was Invesco, adding an estimated $159M. The largest seller was Sessa Capital, cutting an estimated $151M.
- 859 institutional investors held Illumina (ILMN) as of Q4 2025, up from 777 in Q3 2025.
- Funds reported $20.8B of Illumina stock for Q4 2025, up 39% quarter-over-quarter.
- 176 funds opened new Illumina positions in Q4 2025 and 80 closed out, a net change of +96 holders.
- The largest Illumina buyer in Q4 2025 was Invesco, an estimated $159M added.
- The largest Illumina seller in Q4 2025 was Sessa Capital, an estimated $151M sold.
Based on aggregated 13F filings for Q4 2025.