HolderBook

PIONEER ACQUISITION I CORP (PACH)

Institutional ownership reported to the SEC as of Q2 2026, across 4 quarters.

62
Reporting holders
$218.2M
Reported value
0.0%
Held as options
+5
Holder change

Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.

Holders

FilerValueShares Their book Held Change
Westchester Capital Management, LLC$12.9M1,258,6120.63%4qHELD
D. E. Shaw & Co., Inc.$12.8M1,252,3500.01%4qHELD
Verition Fund Management LLC$10.7M1,051,1160.03%4q+100.0%+$5.4M
Linden Advisors LP$10.2M1,000,0000.05%4qHELD
Magnetar Financial LLC$10.2M1,000,0000.09%3qHELD
AQR Arbitrage LLC$9.8M956,8950.14%4q+0.9%+$86.9K
TWO SIGMA INVESTMENTS, LP$8.2M797,5000.01%4qHELD
WOLVERINE ASSET MANAGEMENT LLC$8.1M788,4620.07%4q+12.2%+$876.5K
Wealthspring Capital LLC$7.9M776,2581.77%4q-7.8%-$667.5K
MMCAP International Inc. SPC$7.7M750,0000.65%3qHELD
Radcliffe Capital Management, L.P.$6.4M629,5490.49%4qHELD
TENOR CAPITAL MANAGEMENT Co., L.P.$6.1M600,0000.09%4qHELD
Karpus Management, Inc.$5.6M551,9880.16%4q+10.0%+$511.5K
PICTON MAHONEY ASSET MANAGEMENT$5.1M500,0000.04%4qHELD
First Trust Capital Management L.P.$5.1M500,0000.30%4qHELD
Alberta Investment Management Corp$5.1M500,0000.03%3qHELD
MANGROVE PARTNERS IM, LLC$4.6M450,0000.30%4qHELD
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$4.6M450,0000.01%4q-30.8%-$2.0M
OMERS ADMINISTRATION Corp$4.5M440,0000.03%3qHELD
ARISTEIA CAPITAL, L.L.C.$4.1M400,0000.05%4qHELD
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$4.1M400,0000.02%4qHELD
Polar Asset Management Partners Inc.$4.1M400,0000.07%4qHELD
Jain Global LLC$3.9M386,7360.02%3q-22.6%-$1.2M
Shaolin Capital Management LLC$3.9M377,2180.18%4q-24.6%-$1.3M
BNP PARIBAS FINANCIAL MARKETS$3.6M348,4930.00%4qHELD
WHITEBOX ADVISORS LLC$3.1M300,0000.04%4qHELD
Periscope Capital Inc.$3.1M300,0000.27%4qHELD
MILLENNIUM MANAGEMENT LLC$2.9M287,7000.00%4qHELD
Meteora Capital, LLC$2.8M272,9690.23%newNEW
RIVERNORTH CAPITAL MANAGEMENT, LLC$2.6M249,7580.12%4qHELD
MOORE CAPITAL MANAGEMENT, LP$2.6M250,0000.04%4qHELD
Ghisallo Capital Management LLC$2.6M250,0000.05%4qHELD
O'Connor Alternative Investments LLC$2.6M250,0000.19%2qHELD
Hudson Bay Capital Management LP$2.5M246,0000.01%4qHELD
CSS LLC/IL$2.2M210,9880.08%4qHELD
MIZUHO SECURITIES USA LLC$1.9M183,4970.02%newNEW
Context Capital Management, LLC$1.5M150,0000.03%4qHELD
TIG Advisors, LLC$1.5M150,0000.07%3qHELD
BERKLEY W R CORP$1.5M148,7260.07%4qHELD
Clear Street Group Inc.$1.4M139,8610.00%4q-6.4%-$98.2K
Parallax Volatility Advisers, L.P.$1.3M129,9090.00%2q+37.6%+$362.5K
TORONTO DOMINION BANK$1.3M125,0000.00%4q-26.0%-$448.8K
SONA ASSET MANAGEMENT (US) LLC$1.1M111,0590.02%2qHELD
Lineage Point Capital LP$1.1M106,8050.22%3qHELD
Dakota Wealth Management$1.1M104,1000.02%4qHELD
DLD Asset Management, LP$1.1M102,7370.07%3q-19.6%-$255.8K
Governors Lane LP$1.0M100,0000.09%4qHELD
HEIGHTS CAPITAL MANAGEMENT, INC$1.0M100,0000.24%3qHELD
BOOTHBAY FUND MANAGEMENT, LLC$853.1K83,3910.01%4qHELD
GRITSTONE ASSET MANAGEMENT LLC$709.2K69,3240.68%4qHELD
Logan Stone Capital, LLC$621.3K60,7370.13%newNEW
Timelo Investment Management Inc.$613.8K60,0000.18%2qHELD
Centiva Capital, LP$510.5K50,0000.00%4qHELD
Limestone Investment Advisors LP$491.2K48,0170.04%newNEW
PenderFund Capital Management Ltd.$389.7K38,1720.05%3q+151.1%+$234.5K
Stoic Point Capital Management LLC$345.5K33,7750.29%3qHELD
ABC ARBITRAGE SA$255.8K25,0000.03%3qHELD
L1 Global Manager Pty Ltd$249.6K24,4000.18%3qHELD
Arax Advisory Partners$107.4K10,5000.00%newNEW
DELTEC ASSET MANAGEMENT LLC$102.3K10,0000.02%4qHELD
GLAZER CAPITAL, LLC$12.4K1,210,6430.30%4qHELD
Mint Tower Capital Management B.V.$4.1K400,0000.47%3qHELD
MORGAN STANLEY$501490.00%3q-27.9%
Kepos Capital LP$48247,1000.66%2qHELD
HRT FINANCIAL LP$25024,5340.00%newNEW
Virtu Financial LLC$10410,2030.00%newNEW
UBS Group AG$7270.00%2q-99.9%-$93.1K

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q2 202662$218.2M21,347,6585690.0%
Q1 202657$209.4M20,632,2164790.0%
Q4 202555$203.7M20,256,47012590.0%
Q3 202541$156.3M15,713,09040000.0%