Pioneer Acquisition I Corp(PACH)

$10.33—Stale · unknown old

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Pioneer Acquisition I Corp(PACH)

NASDAQ • Last print unknown ago

$10.33—Stale · unknown old

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PACH(PACH)

PACH

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Institutional Ownership

Top 70 Institutional Holders

Holder	Shares	Date	Change	% Held
Westchester Capital Management, LLC	1.26M	Jun 30, 26	--	3.98%
D. E. Shaw & Co., Inc.	1.25M	Jun 30, 26	--	3.96%
GLAZER CAPITAL, LLC	1.21M	Jun 30, 26	--	3.83%
Magnetar Financial LLC	1.00M	Jun 30, 26	--	3.16%
LINDEN ADVISORS LP	1.00M	Jun 30, 26	--	3.16%
AQR Arbitrage LLC	956.89K	Jun 30, 26	+8.51K	3.03%
TWO SIGMA INVESTMENTS, LP	797.50K	Jun 30, 26	--	2.52%
WOLVERINE ASSET MANAGEMENT LLC	788.46K	Jun 30, 26	+85.68K	2.49%
Wealthspring Capital LLC	776.26K	Jun 30, 26	-65.25K	2.45%
MMCAP International Inc. SPC	750.00K	Jun 30, 26	--	2.37%
Radcliffe Capital Management, L.P.	629.55K	Jun 30, 26	+302	1.99%
TENOR CAPITAL MANAGEMENT Co., L.P.	600.00K	Jun 30, 26	--	1.90%
Karpus Management, Inc.	551.99K	Jun 30, 26	+50.00K	1.75%
Verition Fund Management LLC	525.56K	Jun 30, 26	--	1.66%
Alberta Investment Management Corp	500.00K	Jun 30, 26	--	1.58%
PICTON MAHONEY ASSET MANAGEMENT	500.00K	Jun 30, 26	--	1.58%
First Trust Capital Management L.P.	500.00K	Jun 30, 26	--	1.58%
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	450.00K	Jun 30, 26	-200.00K	1.42%
MANGROVE PARTNERS	450.00K	Jun 30, 26	--	1.42%
OMERS ADMINISTRATION Corp	440.00K	Jun 30, 26	--	1.39%
ARISTEIA CAPITAL LLC	400.00K	Jun 30, 26	--	1.26%
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	400.00K	Jun 30, 26	--	1.26%
Polar Asset Management Partners Inc.	400.00K	Jun 30, 26	--	1.26%
Mint Tower Capital Management B.V.	400.00K	Jun 30, 26	--	1.26%
Jain Global LLC	386.74K	Jun 30, 26	-113.24K	1.22%
Shaolin Capital Management LLC	377.22K	Jun 30, 26	-122.78K	1.19%
BNP PARIBAS ARBITRAGE, SNC	348.49K	Jun 30, 26	--	1.10%
PERISCOPE CAPITAL INC.	300.00K	Jun 30, 26	--	0.95%
WHITEBOX ADVISORS LLC	300.00K	Jun 30, 26	--	0.95%
MILLENNIUM MANAGEMENT LLC	287.70K	Jun 30, 26	+1	0.91%
METEORA CAPITAL, LLC	272.97K	Jun 30, 26	+272.97K	0.86%
O'Connor Alternative Investments, LLC	250.00K	Jun 30, 26	--	0.79%
Ghisallo Capital Management LLC	250.00K	Jun 30, 26	--	0.79%
MOORE CAPITAL MANAGEMENT, LP	250.00K	Jun 30, 26	--	0.79%
RIVERNORTH CAPITAL MANAGEMENT, LLC	249.76K	Jun 30, 26	--	0.79%
Hudson Bay Capital Management LP	246.00K	Jun 30, 26	--	0.78%
CSS LLC/IL	210.99K	Jun 30, 26	--	0.67%
MIZUHO SECURITIES USA LLC	183.50K	Jun 30, 26	+183.50K	0.58%
TIG Advisors, LLC	150.00K	Jun 30, 26	--	0.47%
Context Capital Management, LLC	150.00K	Jun 30, 26	--	0.47%
BERKLEY W R CORP	148.73K	Jun 30, 26	--	0.47%
Clear Street Group Inc.	139.86K	Jun 30, 26	-9.60K	0.44%
Parallax Volatility Advisers, L.P.	129.91K	Jun 30, 26	+35.51K	0.41%
TORONTO DOMINION BANK	125.00K	Jun 30, 26	-43.88K	0.40%
SONA ASSET MANAGEMENT (US) LLC	111.06K	Jun 30, 26	--	0.35%
Lineage Point Capital LP	106.81K	Jun 30, 26	--	0.34%
Dakota Wealth Management	104.10K	Jun 30, 26	--	0.33%
DLD Asset Management, LP	102.74K	Jun 30, 26	-25.00K	0.32%
Governors Lane LP	100.00K	Jun 30, 26	--	0.32%
HEIGHTS CAPITAL MANAGEMENT, INC	100.00K	Jun 30, 26	--	0.32%
BOOTHBAY FUND MANAGEMENT, LLC	83.39K	Jun 30, 26	--	0.26%
GRITSTONE ASSET MANAGEMENT LLC	69.32K	Jun 30, 26	--	0.22%
Logan Stone Capital, LLC	60.74K	Jun 30, 26	+60.74K	0.19%
Timelo Investment Management Inc.	60.00K	Jun 30, 26	--	0.19%
Centiva Capital, LP	50.00K	Jun 30, 26	--	0.16%
Limestone Investment Advisors LP	48.02K	Jun 30, 26	+48.02K	0.15%
Kepos Capital LP	47.10K	Jun 30, 26	--	0.15%
PenderFund Capital Management Ltd.	38.17K	Jun 30, 26	+22.97K	0.12%
Stoic Point Capital Management LLC	33.77K	Jun 30, 26	--	0.11%
ABC ARBITRAGE SA	25.00K	Jun 30, 26	--	0.08%
HRT FINANCIAL LP	24.53K	Jun 30, 26	+24.53K	0.08%
L1 Global Manager Pty Ltd	24.40K	Jun 30, 26	--	0.08%
SRS Capital Advisors, Inc.	10.50K	Jun 30, 26	+10.50K	0.03%
Virtu Financial LLC	10.20K	Jun 30, 26	+10.20K	0.03%
DELTEC ASSET MANAGEMENT LLC	10.00K	Jun 30, 26	--	0.03%
MORGAN STANLEY	49	Jun 30, 26	-19	0.00%
UBS Group AG	7	Jun 30, 26	-9.05K	0.00%
FNY Investment Advisers, LLC	--	Jun 30, 26	-1.00K	--
UBS OCONNOR LLC	250.00K	Dec 31, 25	--	0.79%
ATW SPAC MANAGEMENT LLC	83.39K	Sep 30, 25	+83.39K	0.26%

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Holder

Date

Change

% Held

Westchester Capital Management, LLC

1.26M

Jun 30, 26

3.98%

D. E. Shaw & Co., Inc.

1.25M

Jun 30, 26

3.96%

GLAZER CAPITAL, LLC

1.21M

Jun 30, 26

3.83%

Magnetar Financial LLC

1.00M

Jun 30, 26

3.16%

LINDEN ADVISORS LP

1.00M

Jun 30, 26

3.16%

AQR Arbitrage LLC

956.89K

Jun 30, 26

+8.51K

3.03%

TWO SIGMA INVESTMENTS, LP

797.50K

Jun 30, 26

2.52%

WOLVERINE ASSET MANAGEMENT LLC

788.46K

Jun 30, 26

+85.68K

2.49%

Wealthspring Capital LLC

776.26K

Jun 30, 26

-65.25K

2.45%

MMCAP International Inc. SPC

750.00K

Jun 30, 26

2.37%

Radcliffe Capital Management, L.P.

629.55K

Jun 30, 26

+302

1.99%

TENOR CAPITAL MANAGEMENT Co., L.P.

600.00K

Jun 30, 26

1.90%

Karpus Management, Inc.

551.99K

Jun 30, 26

+50.00K

1.75%

Verition Fund Management LLC

525.56K

Jun 30, 26

1.66%

Alberta Investment Management Corp

500.00K

Jun 30, 26

1.58%

PICTON MAHONEY ASSET MANAGEMENT

500.00K

Jun 30, 26

1.58%

First Trust Capital Management L.P.

500.00K

Jun 30, 26

1.58%

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

450.00K

Jun 30, 26

-200.00K

1.42%

MANGROVE PARTNERS

450.00K

Jun 30, 26

1.42%

OMERS ADMINISTRATION Corp

440.00K

Jun 30, 26

1.39%

ARISTEIA CAPITAL LLC

400.00K

Jun 30, 26

1.26%

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS

400.00K

Jun 30, 26

1.26%

Polar Asset Management Partners Inc.

400.00K

Jun 30, 26

1.26%

Mint Tower Capital Management B.V.

400.00K

Jun 30, 26

1.26%

Jain Global LLC

386.74K

Jun 30, 26

-113.24K

1.22%

Shaolin Capital Management LLC

377.22K

Jun 30, 26

-122.78K

1.19%

BNP PARIBAS ARBITRAGE, SNC

348.49K

Jun 30, 26

1.10%

PERISCOPE CAPITAL INC.

300.00K

Jun 30, 26

0.95%

WHITEBOX ADVISORS LLC

300.00K

Jun 30, 26

0.95%

MILLENNIUM MANAGEMENT LLC

287.70K

Jun 30, 26

0.91%

METEORA CAPITAL, LLC

272.97K

Jun 30, 26

+272.97K

0.86%

O'Connor Alternative Investments, LLC

250.00K

Jun 30, 26

0.79%

Ghisallo Capital Management LLC

250.00K

Jun 30, 26

0.79%

MOORE CAPITAL MANAGEMENT, LP

250.00K

Jun 30, 26

0.79%

RIVERNORTH CAPITAL MANAGEMENT, LLC

249.76K

Jun 30, 26

0.79%

Hudson Bay Capital Management LP

246.00K

Jun 30, 26

0.78%

CSS LLC/IL

210.99K

Jun 30, 26

0.67%

MIZUHO SECURITIES USA LLC

183.50K

Jun 30, 26

+183.50K

0.58%

TIG Advisors, LLC

150.00K

Jun 30, 26

0.47%

Context Capital Management, LLC

150.00K

Jun 30, 26

0.47%

BERKLEY W R CORP

148.73K

Jun 30, 26

0.47%

Clear Street Group Inc.

139.86K

Jun 30, 26

-9.60K

0.44%

Parallax Volatility Advisers, L.P.

129.91K

Jun 30, 26

+35.51K

0.41%

TORONTO DOMINION BANK

125.00K

Jun 30, 26

-43.88K

0.40%

SONA ASSET MANAGEMENT (US) LLC

111.06K

Jun 30, 26

0.35%

Lineage Point Capital LP

106.81K

Jun 30, 26

0.34%

Dakota Wealth Management

104.10K

Jun 30, 26

0.33%

DLD Asset Management, LP

102.74K

Jun 30, 26

-25.00K

0.32%

Governors Lane LP

100.00K

Jun 30, 26

0.32%

HEIGHTS CAPITAL MANAGEMENT, INC

100.00K

Jun 30, 26

0.32%

BOOTHBAY FUND MANAGEMENT, LLC

83.39K

Jun 30, 26

0.26%

GRITSTONE ASSET MANAGEMENT LLC

69.32K

Jun 30, 26

0.22%

Logan Stone Capital, LLC

60.74K

Jun 30, 26

+60.74K

0.19%

Timelo Investment Management Inc.

60.00K

Jun 30, 26

0.19%

Centiva Capital, LP

50.00K

Jun 30, 26

0.16%

Limestone Investment Advisors LP

48.02K

Jun 30, 26

+48.02K

0.15%

Kepos Capital LP

47.10K

Jun 30, 26

0.15%

PenderFund Capital Management Ltd.

38.17K

Jun 30, 26

+22.97K

0.12%

Stoic Point Capital Management LLC

33.77K

Jun 30, 26

0.11%

ABC ARBITRAGE SA

25.00K

Jun 30, 26

0.08%

HRT FINANCIAL LP

24.53K

Jun 30, 26

+24.53K

0.08%

L1 Global Manager Pty Ltd

24.40K

Jun 30, 26

0.08%

SRS Capital Advisors, Inc.

10.50K

Jun 30, 26

+10.50K

0.03%

Virtu Financial LLC

10.20K

Jun 30, 26

+10.20K

0.03%

DELTEC ASSET MANAGEMENT LLC

10.00K

Jun 30, 26

0.03%

MORGAN STANLEY

Jun 30, 26

-19

0.00%

UBS Group AG

Jun 30, 26

-9.05K

0.00%

FNY Investment Advisers, LLC

Jun 30, 26

-1.00K

UBS OCONNOR LLC

250.00K

Dec 31, 25

0.79%

ATW SPAC MANAGEMENT LLC

83.39K

Sep 30, 25

+83.39K

0.26%