Illumina
ILMN
849 hedge funds and large institutions have $19.3B invested in Illumina in 2026 Q1 according to their latest regulatory filings, with 98 funds opening new positions, 291 increasing their positions, 319 reducing their positions, and 98 closing their positions.
85% more call options, than puts
Call options by funds: $109M | Put options by funds: $59M
0% more first-time investments, than exits
New positions opened: 98 | Existing positions closed: 98
9% less repeat investments, than reductions
Existing positions increased: 291 | Existing positions reduced: 319
1.03% less ownership
Funds ownership: 103.52% → 102.49% (-1%)
1% less funds holding
Funds holding: 859 → 849 (-10)
7% less capital invested
Capital invested by funds: $20.8B → $19.3B (-$1.45B)
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
849 of the 8,187 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.
Fund positioning in ILMN was balanced in Q1 2026: 98 funds opened new positions, 98 closed out, 291 added to existing stakes and 319 trimmed.
The largest buyer was WCM Investment Management, adding an estimated $243M. The largest seller was Capital World Investors, cutting an estimated $598M.
- 849 institutional investors held Illumina (ILMN) as of Q1 2026, down from 859 in Q4 2025.
- Funds reported $19.3B of Illumina stock for Q1 2026, down 7% quarter-over-quarter.
- 98 funds opened new Illumina positions in Q1 2026 and 98 closed out, a net change of 0 holders.
- 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.