Illumina
ILMN
850 hedge funds and large institutions have $19.3B invested in Illumina in 2026 Q1 according to their latest regulatory filings, with 97 funds opening new positions, 293 increasing their positions, 318 reducing their positions, and 98 closing their positions.
85% more call options, than puts
Call options by funds: $109M | Put options by funds: $59M
81% more capital inflows, than outflows
Capital inflows: $3.88B | Capital outflows: $2.14B
1% less first-time investments, than exits
New positions opened: 97 | Existing positions closed: 98
8% less repeat investments, than reductions
Existing positions increased: 293 | Existing positions reduced: 318
1.03% less ownership
Funds ownership: 103.52% → 102.49% (-1%)
1% less funds holding
Funds holding: 862 → 850 (-12)
23% less funds holding in top 10
Funds holding in top 10: 13 → 10 (-3)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WCM Investment Management
Laguna Beach,
California
|
+$243M |
| 2 |
VNIM
Vaughan Nelson Investment Management
Houston,
Texas
|
+$113M |
| 3 |
AllianceBernstein
Nashville,
Tennessee
|
+$112M |
| 4 |
JAM
Jupiter Asset Management
London,
United Kingdom
|
+$107M |
| 5 |
BlackRock
New York
|
+$92.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital World Investors
Los Angeles,
California
|
-$598M |
| 2 |
Loomis, Sayles & Company
Boston,
Massachusetts
|
-$161M |
| 3 |
Swedbank
Stockholm,
Sweden
|
-$105M |
| 4 |
GAM
GuardCap Asset Management
London,
United Kingdom
|
-$90.5M |
| 5 |
Morgan Stanley
New York
|
-$90M |
ILMN Hedge Fund Activity: Q1 2026 in Review
850 of the 8,210 institutional investors tracked by Wall St. Rank reported a position in Illumina (ILMN) for Q1 2026, worth a combined $19.3B — down 7% from $20.8B a quarter earlier.
Sellers outnumbered buyers: 98 funds closed out of ILMN and 97 opened new positions — a net loss of 1 holder — while 318 trimmed existing stakes and 293 added.
The largest buyer was WCM Investment Management, adding an estimated $243M. The largest seller was Capital World Investors, cutting an estimated $598M.
- 850 institutional investors held Illumina (ILMN) as of Q1 2026, down from 862 in Q4 2025.
- Funds reported $19.3B of Illumina stock for Q1 2026, down 7% quarter-over-quarter.
- 97 funds opened new Illumina positions in Q1 2026 and 98 closed out, a net change of -1 holder.
- The largest Illumina buyer in Q1 2026 was WCM Investment Management, an estimated $243M added.
- The largest Illumina seller in Q1 2026 was Capital World Investors, an estimated $598M sold.
Based on aggregated 13F filings for Q1 2026.