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Institutional Ownership · SEC Form 13F

Who owns Melar Acquisition Corp. I (MACI)


Which tracked institutional funds hold MACI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MACI company fundamentals →

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

71
Institutional holders
23M
Shares held (tracked funds)

How the tape is positioned

7 tracked funds added or opened MACI while 6 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

MACI’s largest tracked holder by dollar value, METEORA CAPITAL, LLC, sizes it at 0.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in MACI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2025-Q4 and 2026-Q1, across 52 tracked filers holding MACI, 12 increased or opened the position and 15 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in MACI between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 2

  • JPMORGAN CHASE & CO$3M
  • HIGHBRIDGE CAPITAL MANAGEMENT LLC$3M

Full exits 1

  • TWO SIGMA INVESTMENTS, LP$2M

Largest adds

  • MIZUHO SECURITIES USA LLC$3M
  • Crossingbridge Advisors, LLC$2M
  • BERKLEY W R CORP$2M
  • TORONTO DOMINION BANK$555K
  • RiverPark Advisors, LLC$448K

Largest trims

  • METEORA CAPITAL, LLC$7M
  • HGC Investment Management Inc.$2M
  • GLAZER CAPITAL, LLC$2M
  • Karpus Management, Inc.$2M
  • Periscope Capital Inc.$608K

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
METEORA CAPITAL, LLC added345,677$41M20.9%2026-Q1
LMR Partners LLP added1,485,000$16M8.1%2026-Q1
First Trust Capital Management L.P.1,400,000$15M7.6%2026-Q1
MIZUHO SECURITIES USA LLC added1,250,727$13M6.8%2026-Q1
WOLVERINE ASSET MANAGEMENT LLC trimmed1,026,683$11M5.6%2026-Q1
BERKLEY W R CORP added998,963$11M5.4%2026-Q1
AQR Arbitrage LLC added996,499$11M5.4%2026-Q1
Karpus Management, Inc. trimmed988,505$11M5.4%2026-Q1
Cable Car Capital, LP492,500$5M2.7%2026-Q1
Wealthspring Capital LLC added447,964$5M2.4%2026-Q1
Radcliffe Capital Management, L.P.426,939$5M2.3%2026-Q1
Westchester Capital Management, LLC424,707$5M2.3%2026-Q1
GLAZER CAPITAL, LLC trimmed398,589$4M2.2%2026-Q1
Magnetar Financial LLC371,250$4M2.0%2026-Q1
Crossingbridge Advisors, LLC added355,236$4M1.9%2026-Q1
L1 Global Manager Pty Ltd335,000$4M1.8%2026-Q1
GOLDMAN SACHS GROUP INC299,331$3M1.6%2026-Q1
JPMORGAN CHASE & CO added288,804$3M1.6%2026-Q1
HIGHBRIDGE CAPITAL MANAGEMENT LLC trimmed288,804$3M1.6%2026-Q1
RiverPark Advisors, LLC added225,333$2M1.2%2026-Q1
Periscope Capital Inc. trimmed125,000$1M0.7%2026-Q1
DELTEC ASSET MANAGEMENT LLC100,000$1M0.5%2026-Q1
MOORE CAPITAL MANAGEMENT, LP added75,000$808K0.4%2026-Q1
Dakota Wealth Management37,500$404K0.2%2026-Q1
HEIGHTS CAPITAL MANAGEMENT, INC trimmed34,755$375K0.2%2026-Q1
BOOTHBAY FUND MANAGEMENT, LLC26,490$285K0.1%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC20,514$221K0.1%2026-Q1
Tuttle Capital Management, LLC15,000$162K0.1%2026-Q1
HRT FINANCIAL LP10,000$107K0.1%2026-Q1
Polar Asset Management Partners Inc. trimmed742,500$89K0.0%2026-Q1
Saba Capital Management, L.P.438,551$55K0.0%2026-Q1
CSS LLC/IL375,778$45K0.0%2026-Q1
TORONTO DOMINION BANK added318,056$38K0.0%2026-Q1
Shaolin Capital Management LLC250,081$30K0.0%2026-Q1
K2 PRINCIPAL FUND, L.P. trimmed195,777$23K0.0%2026-Q1
D. E. Shaw & Co., Inc. trimmed162,500$21K0.0%2026-Q1
Hudson Bay Capital Management LP trimmed162,500$20K0.0%2026-Q1
Alberta Investment Management Corp162,500$20K0.0%2026-Q1
PICTON MAHONEY ASSET MANAGEMENT trimmed162,088$19K0.0%2026-Q1
HGC Investment Management Inc. trimmed150,528$18K0.0%2026-Q1
RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed149,999$18K0.0%2026-Q1
BNP PARIBAS FINANCIAL MARKETS125,905$15K0.0%2026-Q1
Verition Fund Management LLC99,000$13K0.0%2026-Q1
Clear Street Group Inc.95,226$11K0.0%2026-Q1
GRITSTONE ASSET MANAGEMENT LLC44,092$5K0.0%2026-Q1
Schonfeld Strategic Advisors LLC added40,000$5K0.0%2026-Q1
StoneX Group Inc. trimmed10,355$1K0.0%2026-Q1
MORGAN STANLEY added80$8620.0%2026-Q1
UBS Group AG added4,939$5930.0%2026-Q1
LONGFELLOW INVESTMENT MANAGEMENT CO LLC3,760$4510.0%2026-Q1
RLH Capital LLC new11$1180.0%2026-Q1
Quarry LP11$1180.0%2026-Q1
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS400,000$4M2.1%2025-Q3 stale
ATW SPAC MANAGEMENT LLC26,490$4M2.1%2025-Q3 stale
Schechter Investment Advisors, LLC trimmed312,724$3M1.6%2025-Q1 stale
TWO SIGMA INVESTMENTS, LP trimmed218,703$2M1.2%2025-Q4 stale
MIZUHO SECURITIES USA LLC added126,753$1M0.7%2025-Q1 stale
Virtu Financial LLC added85,918$902K0.5%2025-Q2 stale
BCK Capital Management LP added68,874$723K0.4%2025-Q3 stale
ABC ARBITRAGE SA new20,000$213K0.1%2025-Q4 stale
Centiva Capital, LP trimmed100,000$100K0.1%2025-Q3 stale
MASO CAPITAL PARTNERS Ltd162,500$25K0.0%2025-Q3 stale
CLEAR STREET LLC added1,621$17K0.0%2025-Q2 stale
Parallax Volatility Advisers, L.P. added43,785$7K0.0%2025-Q3 stale
Sandia Investment Management LP added25,000$4K0.0%2025-Q4 stale
CONCOURSE FINANCIAL GROUP SECURITIES, INC.00.0%2025-Q2 stale

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

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