Pioneer Acquisition I PACH Institutional Ownership

NASDAQ PACH

$10.34 +0.01 (+0.05%)

As of: Sep 10, 2026 · 9:45 AM EDT

Institutions by Trading Activity

65 Institutions

Increased 13 20.0%

Unchanged 43 66.2%

Reduced 9 13.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

35.29%

▼-52.82 pp QoQ

Shares Held by Institutions

22.32Mn

of 63.25Mn outstanding

▲+0.18% QoQ

Shares Outstanding

63.25Mn

40.93Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+4 vs prior quarter

Net Shares Added (QoQ)

+41.12K

accumulated since last quarter

Value of Holdings

$230.58Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Pioneer Acquisition I Corp (NASDAQ:PACH) has 65 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 35.3% of outstanding shares in June 2026, down from 88.1% in March 2026.
They increased total shares held in Pioneer Acquisition I by 0.18% from last quarter, and the number of investors in PACH stayed flat annually.
Of these 65 holders, 13 added to their stakes in Pioneer Acquisition I, 9 trimmed positions, and 43 made no changes.
Institutional investors collectively held 22.32Mn shares in Pioneer Acquisition I as of June 2026, up by 41.12K shares quarter on quarter, and with no net change year over year.
As of June 30, 2026, Westchester Capital Management, LLC held the largest stake in Pioneer Acquisition I with 1.26Mn shares, accounting for 1.99% of total shares outstanding.
Leading buyers of Pioneer Acquisition I shares for the quarter ending June 2026 were METEORA CAPITAL, LLC (272.97K), WOLVERINE ASSET MANAGEMENT LLC (85.68K), Logan Stone Capital, LLC (60.74K), Karpus Management, Inc. (50.0K), Limestone Investment Advisors LP (48.02K).
Leading sellers of Pioneer Acquisition I shares for the quarter ending June 2026 were HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND (200.0K), Shaolin Capital Management LLC (122.78K), Jain Global LLC (113.24K), Wealthspring Capital LLC (65.25K), Toronto Dominion Bank (43.88K).
Business Quant data shows the 10 biggest positions in Pioneer Acquisition I as of June 2026 are held by Westchester Capital Management, LLC (1.26Mn), D. E. Shaw & Co., Inc. (1.25Mn), GLAZER CAPITAL, LLC (1.21Mn), LINDEN ADVISORS LP (1.0Mn), Magnetar Financial LLC (1.0Mn), AQR Arbitrage LLC (956.9K), TWO SIGMA INVESTMENTS, LP (797.5K), WOLVERINE ASSET MANAGEMENT LLC (788.46K), Wealthspring Capital LLC (776.26K), MMCAP International Inc. SPC (750.0K).

Form 13F Holdings

65 Institutional Holders

Report period 30 Jun, 2026

Total shares held 22.32Mn

Of outstanding 35.29%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Westchester Capital Management, LLC	0001512805	1,258,612	1.99%	0	0.00%	$12.85Mn
2	D. E. Shaw & Co., Inc.	0001009207	1,252,350	1.98%	0	0.00%	$12.79Mn
3	GLAZER CAPITAL, LLC	0001076809	1,210,643	1.91%	0	0.00%	$12.39K
4	LINDEN ADVISORS LP	0001279396	1,000,000	1.58%	0	0.00%	$10.21Mn
4	Magnetar Financial LLC	0001352851	1,000,000	1.58%	0	0.00%	$10.21Mn
5	AQR Arbitrage LLC	0001167456	956,895	1.51%	▲8,514	+0.90%	$9.77Mn
6	TWO SIGMA INVESTMENTS, LP	0001179392	797,500	1.26%	0	0.00%	$8.16Mn
7	WOLVERINE ASSET MANAGEMENT LLC	0001279891	788,462	1.25%	▲85,684	+12.19%	$8.07Mn
8	Wealthspring Capital LLC	0001844495	776,258	1.23%	▼65,250	-7.75%	$7.94Mn
9	MMCAP International Inc. SPC	0001304857	750,000	1.19%	0	0.00%	$7.67Mn
10	Radcliffe Capital Management, L.P.	0001218275	629,549	1.00%	▲302	+0.05%	$6.44Mn
11	TENOR CAPITAL MANAGEMENT Co., L.P.	0001346554	600,000	0.95%	0	0.00%	$6.14Mn
12	Karpus Management, Inc.	0001048703	551,988	0.87%	▲50,000	+9.96%	$5.65Mn
13	Verition Fund Management LLC	0001454027	525,558	0.83%	0	0.00%	$5.37Mn
14	PICTON MAHONEY ASSET MANAGEMENT	0001539041	500,000	0.79%	0	0.00%	$5.12Mn
14	Alberta Investment Management Corp	0001463559	500,000	0.79%	0	0.00%	$5.11Mn
14	First Trust Capital Management L.P.	0001604488	500,000	0.79%	0	0.00%	$5.12Mn
15	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0001535845	450,000	0.71%	▼200,000	-30.77%	$4.59Mn
15	MANGROVE PARTNERS IM, LLC	0001535392	450,000	0.71%	0	0.00%	$4.60Mn
16	OMERS ADMINISTRATION Corp	0001053321	440,000	0.70%	0	0.00%	$4.49Mn

Showing 1 to 20 of 65 holders