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Adage Capital Management, L.P.

SPAC-arb rosterCIK 0001535978

73 SPACs with a current declared position, filed between Nov 12, 2024 and Aug 12, 2026. 71 of them were re-affirmed in the last 12 months. The rest are the filer’s last word on a position, not proof it is still held: an amendment is only required on a material change, so a fund that sells below 5% may never file again.

SPACs declared
73
every position whose latest statement stands — the record
Re-affirmed in 12 months
71
filed inside 365 days — what a reader means by "owns"
Still live
67
positions in SPACs still searching or in an announced deal
Median stake
7.6%
7.6% across the re-affirmed positions · max 9.0%
73 passive (13G)3 superseded statements on file

Positions

one row per SPAC — every figure read from the accession in the Source column
73 of 73 shown · 2 positions have not been amended in over a year
SPACVotingDispositiveSource
ETSSEnergy Transition Spec Opp9.0%1,350,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004990 opens on sec.gov in a new tab
FTHAForefront Tech Holdings9.0%900,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004992 opens on sec.gov in a new tab
RREVRRE Ventures Acquisition9.0%2,250,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004983 opens on sec.gov in a new tab
ACAAAverin Capital Acquisition8.9%2,250,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002916 opens on sec.gov in a new tab
TRGSTRG Latin America Acq8.6%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002959 opens on sec.gov in a new tab
IDACIron Dome Acquisition I8.5%1,350,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004961 opens on sec.gov in a new tab
BWIVBlue Water Acquisition IV8.4%1,125,000not statednot statedDeal announcedMay 13, 2026FreshSC 13G0000919574-26-002921 opens on sec.gov in a new tab
PTACPatriot Acquisition8.2%1,440,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004970 opens on sec.gov in a new tab
SHOTRMG ML Sports Holdings8.2%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004980 opens on sec.gov in a new tab
ACGCACP Holdings Acquisition8.2%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004952 opens on sec.gov in a new tab
MTNECH4 Natural Solutions8.1%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004978 opens on sec.gov in a new tab
MEVOM Evo Global Acq II8.1%2,430,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002942 opens on sec.gov in a new tab
XCBEX3 Acquisition8.0%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002962 opens on sec.gov in a new tab
ISNRSnow Rothschild Acquisition8.0%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004951 opens on sec.gov in a new tab
PALOPaloma Acquisition I8.0%1,350,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002951 opens on sec.gov in a new tab
AACIArmada Acquisition III7.9%2,025,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002912 opens on sec.gov in a new tab
EVOXEvolution Global Acquisition Corp7.9%1,890,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000892 opens on sec.gov in a new tab
DNMXDynamix III7.8%1,575,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000889 opens on sec.gov in a new tab
DYORInsight Digital Partners II7.8%1,350,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000895 opens on sec.gov in a new tab
LATAGalata Acquisition Corp. II7.8%1,350,000not statednot statedSearchingNov 13, 2025FreshSC 13G0000902664-25-004882 opens on sec.gov in a new tab
LTGRLong Table Growth7.8%1,350,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004966 opens on sec.gov in a new tab
MTALMetals Acquisition II7.8%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002943 opens on sec.gov in a new tab
OIMOneIM Acquisition7.8%2,250,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002947 opens on sec.gov in a new tab
SVIVSpring Valley Acquisition IV7.8%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002957 opens on sec.gov in a new tab
TMTSSpartacus Acquisition II7.8%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002956 opens on sec.gov in a new tab
TVIVTexas Ventures Acq IV7.8%1,350,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004976 opens on sec.gov in a new tab
YICCYorkville International Capital7.8%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004988 opens on sec.gov in a new tab
FGIIFG Imperii Acquisition7.8%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002926 opens on sec.gov in a new tab
IRABIris Acquisition II7.8%1,350,000not statednot statedDeal terminatedMay 13, 2026FreshSC 13G0000919574-26-002938 opens on sec.gov in a new tab
GHXIGores Holdings XI7.8%2,808,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004956 opens on sec.gov in a new tab
FVAVFortress Value Acquisition V7.8%2,250,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002930 opens on sec.gov in a new tab
KPETKPET Ultra Paceline7.8%1,800,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004963 opens on sec.gov in a new tab
CAQCambridge Acquisition7.7%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002923 opens on sec.gov in a new tab
GCGRGeneral Catalyst Global Resilience7.7%3,150,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004953 opens on sec.gov in a new tab
MUZEMuzero Acquisition7.6%1,575,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002946 opens on sec.gov in a new tab
CRANCrane Harbor Acquisition Corp. II7.6%2,700,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000902 opens on sec.gov in a new tab
IACQIrenic Acquisition7.6%1,980,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004962 opens on sec.gov in a new tab
SUMASUMA Acquisition7.6%1,350,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002958 opens on sec.gov in a new tab
AEAQActivate Energy Acquisition Corp.7.6%1,800,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000883 opens on sec.gov in a new tab
HCICHennessy Capital Inv VIII7.6%1,890,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002932 opens on sec.gov in a new tab
HVMCHighview Merger Corp.7.6%1,800,000not statednot statedSearchingNov 13, 2025FreshSC 13G0000902664-25-004876 opens on sec.gov in a new tab
SAAQSpace Asset Acquisition7.6%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002955 opens on sec.gov in a new tab
AACOAbony Acquisition I7.6%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002905 opens on sec.gov in a new tab
HCACHall Chadwick7.6%1,620,000not statednot statedDeal announcedFeb 12, 2026FreshSC 13G0000902664-26-000893 opens on sec.gov in a new tab
TDWDTailwind 2.0 Acquisition Corp.7.6%1,350,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000894 opens on sec.gov in a new tab
LFACLeapfrog Acquisition Corp7.6%1,125,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000897 opens on sec.gov in a new tab
NHIVNewHold Investment IV7.6%1,575,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004974 opens on sec.gov in a new tab
OTGAOTG Acquisition Corp. I7.6%1,800,000not statednot statedSearchingNov 13, 2025FreshSC 13G0000902664-25-004884 opens on sec.gov in a new tab
SORNSoren Acquisition7.5%1,980,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002954 opens on sec.gov in a new tab
QADRQDRO Acquisition7.5%1,500,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002953 opens on sec.gov in a new tab
KRAQKRAKacquisition7.2%2,475,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002940 opens on sec.gov in a new tab
DSACDaedalus Special Acquisition Corp.7.0%1,800,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000910 opens on sec.gov in a new tab
VHCPVine Hill Capital Investment Corp. II6.8%1,575,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000918 opens on sec.gov in a new tab
WLIIWillow Lane Acquisition II6.7%1,000,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002960 opens on sec.gov in a new tab
CXIIChurchill Capital XII6.5%2,700,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004985 opens on sec.gov in a new tab
IEAGInfinite Eagle Acquisition6.5%2,250,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002936 opens on sec.gov in a new tab
SBXESilverBox V6.4%1,750,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000919 opens on sec.gov in a new tab
BCSSBain Capital GSS6.4%3,000,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000885 opens on sec.gov in a new tab
VACIViking Acquisition Corp I6.0%1,425,000not statednot statedDeal approvedAug 12, 2026FreshSC 13G/A0000919574-26-004979 opens on sec.gov in a new tab1 earlier statement
ESACESGEN Acquisition Corp3 reporting persons on this schedule6.0%760,0000 / 760,0000 / 760,000Closed (deSPAC)Nov 19, 2024StaleSC 13G0000902664-24-006717 opens on sec.gov in a new tab
ALOVAldabra 45.8%1,750,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002908 opens on sec.gov in a new tab
LEGOLegato Merger IV5.8%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002941 opens on sec.gov in a new tab
MLAAMountain Lake Acq II5.7%2,100,000not statednot statedDeal terminatedMay 13, 2026FreshSC 13G0000919574-26-002945 opens on sec.gov in a new tab
OHACOceanhawk Acquisition5.7%1,075,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004967 opens on sec.gov in a new tab
APMCAmperCap Acquisition5.6%1,125,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004957 opens on sec.gov in a new tab
WENCWest Enclave Merger5.6%900,000not statednot statedSearchingAug 12, 2026FreshSC 13G0000919574-26-004982 opens on sec.gov in a new tab
ADACAmerican Drive5.4%1,250,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000886 opens on sec.gov in a new tab
LPCVLaunchpad Cadenza Acquisition Corp I5.4%1,250,000not statednot statedSearchingFeb 12, 2026FreshSC 13G0000902664-26-000899 opens on sec.gov in a new tab
ARCIArchimedes Tech III5.1%1,800,000not statednot statedSearchingMay 13, 2026FreshSC 13G0000919574-26-002910 opens on sec.gov in a new tab
IPFXInflection Point Acq VI4.2%1,066,678not statednot statedDeal announcedAug 12, 2026FreshSC 13G/A0000919574-26-004958 opens on sec.gov in a new tab1 earlier statement
BBCQBleichroeder Acquisition II3.7%1,068,599not statednot statedClosed (deSPAC)Aug 12, 2026FreshSC 13G/A0000919574-26-004965 opens on sec.gov in a new tab1 earlier statement
FTIVFinTech Acquisition Corp. IV3 reporting persons on this schedule1.9%1,037,6150 / 1,037,6150 / 1,037,615Closed (deSPAC)Nov 12, 2024StaleSC 13G/A0000902664-24-006418 opens on sec.gov in a new tab
APXTApex Treasurynot statednot statednot statednot statedDeal announcedFeb 12, 2026FreshSC 13G0000902664-26-000888 opens on sec.gov in a new tab
3 superseded statements

An amendment replaces a stake as current; it never erases the record of it. These are the earlier statements, each with the accession that replaced it — kept because “what did this filer say in 2022” is a different question from “what does it say now”, and only the second one has an answer above.

  • IPFX Inflection Point Acq VI5.9% · SC 13G May 13, 2026replaced Aug 12, 2026 by 0000919574-26-004958
  • BBCQ Bleichroeder Acquisition II7.8% · SC 13G May 13, 2026replaced Aug 12, 2026 by 0000919574-26-004965
  • VACI Viking Acquisition Corp I7.6% · SC 13G Feb 12, 2026replaced Aug 12, 2026 by 0000919574-26-004979

Reporting persons on this filer's schedules

one filer, several names — collapsed once, shown in full

A joint Schedule 13 names every person who beneficially owns the shares — the management company, the funds it advises, the general partner and often the individual who controls all three. They report the same shares. Counting them separately would publish this filer’s footprint two or three times over, so they are counted once, under CIK 0001535978. This filer has named 3 of them across the schedules in the table above:

  • Adage Capital Management
  • Phillip Gross
  • Robert Atchinson

Appears alongside

other filers with a current declared position in the same SPACs

Co-occurrence in the disclosure record, and nothing more. It is not evidence of a group, an agreement or acting in concert — filers who act as a group say so on the cover page and file a 13D. Two arbitrage funds above 5% in the same shell is the ordinary shape of this market. The second number restricts both sides to statements filed in the last 12 months, because a 2021 stake beside a 2026 one is two facts about two different years.

Every percentage above is the one printed on the cover page of the filing cited beside it — a percentage of the shares outstanding on that date. A SPAC’s float collapses at each redemption, so two of these percentages are percentages of two different companies and they do not add. Rows are one per SPAC: where a joint schedule names several reporting persons, the largest single figure is shown rather than their sum, because a manager and the funds it advises beneficially own the same shares. Nothing on this page is derived from a 13F, a vendor holdings file or a press release. See how this is built.