Glaukos
GKOS
337 hedge funds and large institutions have $6.25B invested in Glaukos in 2026 Q1 according to their latest regulatory filings, with 50 funds opening new positions, 110 increasing their positions, 128 reducing their positions, and 41 closing their positions.
95% more capital inflows, than outflows
Capital inflows: $1.6B | Capital outflows: $820M
22% more first-time investments, than exits
New positions opened: 50 | Existing positions closed: 41
1% more funds holding
Funds holding: 333 → 337 (+4)
0.47% more ownership
Funds ownership: 99.38% → 99.85% (+0.47%)
14% less repeat investments, than reductions
Existing positions increased: 110 | Existing positions reduced: 128
25% less funds holding in top 10
Funds holding in top 10: 4 → 3 (-1)
79% less call options, than puts
Call options by funds: $18.4M | Put options by funds: $85.9M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Janus Henderson Group
London,
|
+$262M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$160M |
| 3 |
Driehaus Capital Management
Chicago,
Illinois
|
+$54.9M |
| 4 |
Jennison Associates
New York
|
+$54.8M |
| 5 |
Westfield Capital Management
Boston,
Massachusetts
|
+$54.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Ameriprise
Minneapolis,
Minnesota
|
-$55.5M |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$54.9M |
| 3 |
Millennium Management
New York
|
-$49.1M |
| 4 |
Wellington Management Group
Boston,
Massachusetts
|
-$38M |
| 5 |
AustralianSuper
Melbourne,
Australia
|
-$35.8M |
GKOS Hedge Fund Activity: Q1 2026 in Review
337 of the 8,214 institutional investors tracked by Wall St. Rank reported a position in Glaukos (GKOS) for Q1 2026, worth a combined $6.25B — down 3% from $6.44B a quarter earlier.
Buyers outnumbered sellers: 50 funds opened new GKOS positions and 41 closed out — a net gain of 9 holders — while 110 added to existing stakes and 128 trimmed.
The largest buyer was Janus Henderson Group, adding an estimated $262M. The largest seller was Ameriprise, cutting an estimated $55.5M.
- 337 institutional investors held Glaukos (GKOS) as of Q1 2026, up from 333 in Q4 2025.
- Funds reported $6.25B of Glaukos stock for Q1 2026, down 3% quarter-over-quarter.
- 50 funds opened new Glaukos positions in Q1 2026 and 41 closed out, a net change of +9 holders.
- The largest Glaukos buyer in Q1 2026 was Janus Henderson Group, an estimated $262M added.
- The largest Glaukos seller in Q1 2026 was Ameriprise, an estimated $55.5M sold.
Based on aggregated 13F filings for Q1 2026.