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Disclosery

MACI MELAR ACQUISITION CORP. I

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SHS CL A (common), issuer CIK 2016221

37 managers (37 13F filers) reported a position in MACI shares at 2025-06-30, 15,148,602 shares in all. 5 filers opened a position and 1 filer sold out during the quarter.

Managers
37
13F filers
37
New
5
Added
5
Reduced
9
Sold out
1
Shares held by filers
15,148,602

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Polar Asset Management Partners Inc.1,485,000$15.6M0.39%013F-HRTimeline
LMR Partners LLPin group LMR Partners LLP1,485,000$15.6M0.24%013F-HRTimelineGroup
First Trust Capital Management L.P.in group FIRST TRUST ADVISORS LP1,400,000$14.7M0.99%-178,95113F-HRTimelineGroup
Karpus Management, Inc.1,272,538$13.4M0.43%-360,72513F-HRTimeline
Meteora Capital, LLC1,110,289$11.7M2.18%new13F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC1,006,179$10.6M0.25%-12,00013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.576,328$6.05M0.01%013F-HRTimelineGroup
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC556,374$5.85M0.21%-6,23413F-HRTimelineGroup
Cable Car Capital, LP492,500$5.18M2.24%013F-HR/ATimeline
Wealthspring Capital LLCin group Wealthspring Capital LLC459,235$4.83M1.28%+296,18513F-HRTimelineGroup
Westchester Capital Management, LLCin group Westchester Capital Managemen…424,707$4.46M0.26%-100,00013F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…400,000$4.2M0.02%013F-HRTimeline
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC390,052$4.1M0.07%-803,94913F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP375,000$3.94M0.01%013F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC371,250$3.86M0.02%new13F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT325,000$3.42M0.05%013F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…325,000$3.41M0.02%013F-HR/ATimelineGroup
Alberta Investment Management Corp325,000$3.41M0.03%new13F-HR/ATimeline
BERKLEY W R CORP323,448$3.4M0.21%013F-HRTimeline
RIVERNORTH CAPITAL MANAGEMENT, LLC299,998$3.15M0.17%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC299,331$3.15M<0.01%013F-HRTimelineGroup
Radcliffe Capital Management, L.P.294,375$3.09M0.24%new13F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK220,729$2.32M<0.01%+151,68613F-HRTimelineGroup
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC203,254$2.11M0.05%13F-HRTimelineGroup
Periscope Capital Inc.200,000$2.1M0.79%013F-HRTimeline
DELTEC ASSET MANAGEMENT LLC100,000$1.05M0.19%013F-HRTimeline
HEIGHTS CAPITAL MANAGEMENT, INCin group HEIGHTS CAPITAL MANAGEMENT, I…99,999$1.05M0.33%-113F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC85,918$902K0.05%+38,29813F-HRTimelineGroup
MOORE CAPITAL MANAGEMENT, LP75,000$788K0.02%013F-HRTimeline
BCK CAPITAL MANAGEMENT LP50,000$526K0.45%new13F-HRTimeline
Dakota Wealth Management39,000$410K0.01%013F-HRTimeline
Schonfeld Strategic Advisors LLC35,000$368K<0.01%-15,00013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC20,514$215K<0.01%+8413F-HRTimelineGroup
Tuttle Capital Management, LLC15,000$158K0.65%-20,00013F-HRTimeline
LONGFELLOW INVESTMENT MANAGEMENT CO LLC7,520$79K0.02%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY64$673<0.01%+5013F-HRTimelineGroup
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.