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Disclosery

PACH PIONEER ACQUISITION I CORP

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CL A ORD SHS (common), issuer CIK 2040381

61 managers (61 13F filers) reported a position in PACH shares at 2026-03-31, 22,290,959 shares in all. 5 filers opened a position and 3 filers sold out during the quarter.

Managers
61
13F filers
61
New
5
Added
8
Reduced
10
Sold out
3
Shares held by filers
22,290,959

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
Westchester Capital Management, LLCin group Westchester Capital Managemen…1,258,612$12.8M0.62%+850,00013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,252,350$12.7M0.01%013F-HRTimelineGroup
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC1,210,643$12.3M0.26%+159,99313F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC1,000,000$10.2M0.1%013F-HRTimelineGroup
Linden Advisors LPin group Linden Advisors LP1,000,000$10.2M0.06%013F-HRTimelineGroup
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC948,381$9.64M0.16%-36,22713F-HRTimelineGroup
Wealthspring Capital LLCin group Wealthspring Capital LLC841,508$8.52M2.02%-8,82813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP797,500$8.08M0.01%013F-HRTimelineGroup
MMCAP International Inc. SPCin group MMCAP750,000$7.6M0.66%013F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC702,778$7.14M0.11%+190,27213F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…650,000$6.6M0.01%013F-HRTimeline
Radcliffe Capital Management, L.P.629,247$6.38M0.48%013F-HRTimeline
TENOR CAPITAL MANAGEMENT Co., L.P.600,000$6.08M0.09%013F-HRTimeline
Verition Fund Management LLC525,558$5.34M0.05%-18,64213F-HRTimeline
Karpus Management, Inc.501,988$5.09M0.16%+20,90013F-HRTimeline
Alberta Investment Management Corp500,000$5.08M0.03%013F-HRTimeline
Jain Global LLC499,979$5.08M0.06%-2113F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT500,000$5.07M0.05%013F-HRTimeline
First Trust Capital Management L.P.in group FIRST TRUST ADVISORS LP500,000$5.07M0.27%013F-HRTimelineGroup
Shaolin Capital Management LLC500,000$5.07M0.21%013F-HRTimeline
MANGROVE PARTNERS IM, LLC450,000$4.56M0.37%013F-HRTimeline
OMERS ADMINISTRATION Corp440,000$4.47M0.03%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…400,000$4.06M0.02%013F-HRTimeline
ARISTEIA CAPITAL, L.L.C.400,000$4.05M0.09%013F-HRTimeline
Polar Asset Management Partners Inc.400,000$4.05M0.1%-100,00013F-HRTimeline
Mint Tower Capital Management B.V.400,000$4.05M0.37%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS348,493$3.53M<0.01%+40,07913F-HRTimelineGroup
Periscope Capital Inc.300,000$3.04M0.53%-100,00013F-HRTimeline
WHITEBOX ADVISORS LLC300,000$3.04M0.04%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC287,699$2.91M<0.01%+18,19913F-HRTimelineGroup
Ghisallo Capital Management LLC250,000$2.54M0.07%013F-HRTimeline
O'Connor Alternative Investments LLC250,000$2.54M0.13%13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
MOORE CAPITAL MANAGEMENT, LP250,000$2.53M0.09%013F-HRTimeline
RIVERNORTH CAPITAL MANAGEMENT, LLC249,758$2.53M0.13%013F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…246,000$2.5M0.02%013F-HRTimelineGroup
CSS LLC/IL210,988$2.14M0.12%-1,40013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK168,875$1.71M<0.01%+23,87513F-HRTimelineGroup
Context Capital Management, LLC150,000$1.52M0.04%013F-HRTimeline
TIG Advisors, LLCin group TIG Advisors, LLC150,000$1.52M0.07%013F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.149,456$1.51M0.01%-168,98913F-HRTimelineGroup
BERKLEY W R CORP148,726$1.51M0.08%013F-HRTimeline
DLD Asset Management, LP127,737$1.29M0.13%013F-HRTimeline
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC111,059$1.13M0.04%new13F-HRTimelineGroup
Lineage Point Capital LP106,805$1.08M0.26%013F-HRTimeline
Dakota Wealth Management104,100$1.05M0.02%-4,90013F-HR/ATimeline
HEIGHTS CAPITAL MANAGEMENT, INCin group HEIGHTS CAPITAL MANAGEMENT, I…100,000$1.02M0.28%013F-HRTimelineGroup
Governors Lane LP100,000$1.01M0.13%013F-HRTimeline
Parallax Volatility Advisers, L.P.94,401$961K0.04%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC83,391$845K0.02%013F-HRTimeline
GRITSTONE ASSET MANAGEMENT LLC69,324$702K0.75%013F-HRTimeline
Timelo Investment Management Inc.in group Timelo Investment Management …60,000$608K0.83%new13F-HRTimelineGroup
Centiva Capital, LP50,000$508K0.02%013F-HRTimeline
Kepos Capital LPin group Kepos Capital LP47,100$478K0.78%new13F-HRTimelineGroup
Stoic Point Capital Management LLC33,775$342K0.34%013F-HRTimeline
ABC ARBITRAGE SAin group ABC ARBITRAGE SA25,000$253K0.03%013F-HRTimelineGroup
L1 Global Manager Pty Ltd24,400$247K0.2%013F-HRTimeline
PenderFund Capital Management Ltd.15,200$154K0.02%-2,20013F-HRTimeline
DELTEC ASSET MANAGEMENT LLC10,000$101K0.02%013F-HRTimeline
UBS Group AGin group UBS Group AG9,060$91.8K<0.01%new13F-HRTimelineGroup
FNY Investment Advisers, LLC1,000$10K<0.01%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY68$689<0.01%+113F-HRTimelineGroup