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SLRN

ACELYRIN
SLRN

Delisted

SLRN was delisted on the 21st of May, 2025.

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82 hedge funds and large institutions have $1.6B invested in ACELYRIN in 2023 Q2 according to their latest regulatory filings, with 82 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

3,526% more call options, than puts

Call options by funds: $2.79M | Put options by funds: $77K

79.39% more ownership

Funds ownership: 0% → 79.39% (+79%)

Holders
82
Holders Change
+82
Holders Change %
–
% of All Funds
1.29%
Holding in Top 10
8
Holding in Top 10 Change
+8
Holding in Top 10 Change %
% of All Funds
0.13%
New
82
Increased
–
Reduced
–
Closed
–
Calls
$2.79M
Puts
$77K
Net Calls
+$2.71M
Net Calls Change
+$2.71M

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$152M
2
Citadel Advisors
Citadel Advisors
Florida
+$124M
3
O
OrbiMed
New York
+$109M
4
OM
Opaleye Management
Massachusetts
+$85.1M
5
VP
venBio Partners
California
+$78.9M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Holocene Advisors
51
Holocene Advisors
New York
$1.33M +$1.3M +63,421 New
TD Asset Management
52
TD Asset Management
Ontario, Canada
$1.29M +$1.26M +61,610 New
RCMU
53
Rokos Capital Management (UK)
United Kingdom
$1.25M +$1.18M +57,500 New
Northern Trust
54
Northern Trust
Illinois
$1.21M +$1.19M +58,125 New
KCM
55
Kennedy Capital Management
Missouri
$1.16M +$1.14M +55,719 New
SSA
56
Schonfeld Strategic Advisors
New York
$1.15M +$1.13M +55,208 New
Alyeska Investment Group
57
Alyeska Investment Group
Illinois
$1.05M +$1.02M +50,070 New
DKCM
58
Davidson Kempner Capital Management
New York
$1.04M +$1.02M +49,680 New
Susquehanna International Group
59
Susquehanna International Group
Pennsylvania
$1.04M +$1.02M +49,650 New
Manulife (Manufacturers Life Insurance)
60
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$878K +$859K +42,000 New
PMEF
61
Point72 Middle East FZE
United Arab Emirates
$779K +$762K +37,274 New
Royal Bank of Canada
62
Royal Bank of Canada
Ontario, Canada
$648K +$634K +30,994 New
Federated Hermes
63
Federated Hermes
Pennsylvania
$627K +$614K +30,000 New
GGHC
64
Gilder Gagnon Howe & Co
New York
$595K +$583K +28,483 New
JF
65
Jump Financial
Illinois
$495K +$484K +23,684 New
Morgan Stanley
66
Morgan Stanley
New York
$377K +$369K +18,054 New
GCM
67
Greenland Capital Management
New York
$350K +$342K +16,730 New
LCM
68
Landscape Capital Management
New Jersey
$322K +$315K +15,426 New
Bank of New York Mellon
69
Bank of New York Mellon
New York
$276K +$270K +13,223 New
ZP
70
Zimmer Partners
New York
$251K +$245K +12,000 New
SIM
71
Sandia Investment Management
Massachusetts
$209K +$205K +10,000 New
Jane Street
72
Jane Street
New York
$203K +$198K +9,695 New
Simplex Trading
73
Simplex Trading
Illinois
$73K +$71.8K +3,511 New
TRCT
74
Tower Research Capital (TRC)
New York
$64.5K +$63.1K +3,085 New
UBS Group
75
UBS Group
Switzerland
$43.5K +$42.6K +2,081 New
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SLRN Hedge Fund Activity: Q2 2023 in Review

82 of the 6,369 institutional investors tracked by Wall St. Rank reported a position in ACELYRIN (SLRN) for Q2 2023, worth a combined $1.6B.

Buyers outnumbered sellers: 82 funds opened new SLRN positions and 0 closed out — a net gain of 82 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Fidelity Investments, opening a new position worth an estimated $152M.

  • 82 institutional investors held ACELYRIN (SLRN) as of Q2 2023, up from 0 in Q1 2023.
  • Funds reported $1.6B of ACELYRIN stock for Q2 2023.
  • 82 funds opened new ACELYRIN positions in Q2 2023 and 0 closed out, a net change of +82 holders.
  • The largest ACELYRIN buyer in Q2 2023 was Fidelity Investments, an estimated $152M added.

Based on aggregated 13F filings for Q2 2023.