ACELYRIN
SLRN
SLRN was delisted on the 21st of May, 2025.
109 hedge funds and large institutions have $613M invested in ACELYRIN in 2024 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 46 increasing their positions, 27 reducing their positions, and 26 closing their positions.
70% more repeat investments, than reductions
Existing positions increased: 46 | Existing positions reduced: 27
5.32% more ownership
Funds ownership: 88.02% → 93.35% (+5.3%)
1% less funds holding
Funds holding: 110 → 109 (-1)
4% less first-time investments, than exits
New positions opened: 25 | Existing positions closed: 26
4% less capital invested
Capital invested by funds: $639M → $613M (-$25.9M)
17% less funds holding in top 10
Funds holding in top 10: 6 → 5 (-1)
29% less call options, than puts
Call options by funds: $4.79M | Put options by funds: $6.78M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$30.5M |
| 2 |
Adage Capital Partners
Boston,
Massachusetts
|
+$23.5M |
| 3 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$16.1M |
| 4 |
BlackRock
New York
|
+$14.3M |
| 5 |
PAI
Palo Alto Investors
Palo Alto,
California
|
+$13M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
OM
Opaleye Management
Boston,
Massachusetts
|
-$19.5M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$13.2M |
| 3 |
Janus Henderson Group
London,
United Kingdom
|
-$12M |
| 4 |
DC
Decheng Capital
Menlo Park,
California
|
-$10.2M |
| 5 |
LGM
Logos Global Management
San Francisco,
California
|
-$9.32M |
SLRN Hedge Fund Activity: Q1 2024 in Review
109 of the 6,942 institutional investors tracked by Wall St. Rank reported a position in ACELYRIN (SLRN) for Q1 2024, worth a combined $613M — down 4.1% from $639M a quarter earlier.
Sellers outnumbered buyers: 26 funds closed out of SLRN and 25 opened new positions — a net loss of 1 holder — while 27 trimmed existing stakes and 46 added.
The largest buyer was Millennium Management, opening a new position worth an estimated $30.5M. The largest seller was Opaleye Management, cutting an estimated $19.5M.
- 109 institutional investors held ACELYRIN (SLRN) as of Q1 2024, down from 110 in Q4 2023.
- Funds reported $613M of ACELYRIN stock for Q1 2024, down 4.1% quarter-over-quarter.
- 25 funds opened new ACELYRIN positions in Q1 2024 and 26 closed out, a net change of -1 holder.
- The largest ACELYRIN buyer in Q1 2024 was Millennium Management, an estimated $30.5M added.
- The largest ACELYRIN seller in Q1 2024 was Opaleye Management, an estimated $19.5M sold.
Based on aggregated 13F filings for Q1 2024.