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ADAR1 Capital Management, LLC

CIK 0001940272

5 SPACs with a current declared position, filed between Nov 14, 2024 and Aug 14, 2026. 3 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
5
every position whose latest statement stands — the record
Re-affirmed in 12 months
3
filed inside 365 days — what a reader means by "owns"
Still live
3
positions in SPACs still searching or in an announced deal
Median stake
5.6%
5.6% across the re-affirmed positions · max 8.4%

Positions

one row per SPAC — every figure read from the accession in the Source column
5 of 5 shown · 2 positions have not been amended in over a year
SPACVotingDispositiveSource
PCSCPerceptive Capital Solutions Corp3 reporting persons on this schedule8.4%750,0000 / 750,0000 / 750,000Closed (deSPAC)Nov 14, 2024StaleSC 13G0001104659-24-119082 opens on sec.gov in a new tab
RACCResearch Alliance Corp III8.4%650,000not statednot statedDeal announcedAug 14, 2026FreshSC 13G0001104659-26-097423 opens on sec.gov in a new tab
HLXCHelix Acquisition III5.6%1,000,000not statednot statedSearchingMay 15, 2026FreshSC 13G0001104659-26-062866 opens on sec.gov in a new tab
JATTJATT II Acquisition5.4%417,724not statednot statedDeal announcedAug 14, 2026FreshSC 13G0001104659-26-097421 opens on sec.gov in a new tab
ZURAJATT Acquisition Corp3 reporting persons on this schedule5.1%3,332,8350 / 3,332,8350 / 3,332,835Closed (deSPAC)Nov 14, 2024StaleSC 13G0001104659-24-119084 opens on sec.gov in a new tab

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 0001940272. This filer has named 3 of them across the schedules in the table above:

  • ADAR1 Capital Management
  • ADAR1 Capital Management GP
  • Daniel Schneeberger

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.