OIMAU · OneIM Acquisition Corp. · Holdings

$10.20 At close · Oct 5

Market Cap

$362.61M

35.94M

Volume · Oct 5 202 Avg daily vol (6 sessions) 8319

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of OIMAU: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

Quarter:

Holders: 13

Total Value: $0

Total Shares: 4,138,057

Institutional Ownership Trend

2 quarters

Who Holds OIMAU

Last 2 quarters through Jun 30, 2026

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026: 13 filers, like-for-like change -39.5%; actively managed books -39.5%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	20.9%	2	-75.1%	0	6
Exempt adviser	12.1%	1	0.0%	0	0
Bank	13.3%	2	-20.5%	0	0
Benefit plan	12.1%	1	0.0%	0	0
Non-US	12.5%	1	-10.5%	0	1
Unknown	29.2%	6	+9.3%	1	0

Style	Share	Filers	Change	New	Exited
Systematic-like	31.4%	2	-47.0%	0	2
Concentrated	19.7%	2	+0.6%	0	1
Diversified active	48.9%	9	-43.5%	1	4

Turnover	Share	Filers	Change	New	Exited
Low turnover	0.0%	0	-100.0%	0	2
Medium turnover	25.3%	3	-59.6%	0	3
High turnover	68.9%	8	-26.7%	1	2
Unknown	5.7%	2	+2.1%	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	62.0%	8	-9.9%	1	1
Medium horizon	12.1%	1	0.0%	0	1
Long horizon	25.3%	3	-49.3%	0	3
Unknown	0.6%	1	-98.2%	0	2

13F book size	Share	Filers	Change	New	Exited
Under $1B	20.2%	3	+8.7%	1	1
$1B to $10B	53.4%	5	-44.3%	0	3
$10B to $100B	26.3%	4	-14.5%	0	1
$100B or more	0.0%	1	-100.0%	0	2

Client base	Share	Filers	Change	New	Exited
Pooled investment vehicles	20.9%	2	-74.8%	0	5
Registered funds and BDCs	0.0%	0	-100.0%	0	1
Unknown	79.1%	11	-2.9%	1	1

Private funds	Share	Filers	Change	New	Exited
Hedge funds	20.9%	2	-74.8%	0	5
Other private funds	0.0%	0	-100.0%	0	1
Private funds, type not stated	12.1%	1	0.0%	0	0
Unknown	67.1%	10	-3.4%	1	1

Location	Share	Filers	Change	New	Exited
United States	9.0%	5	-87.5%	0	6
Outside the US	91.0%	8	-2.6%	1	1

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

13 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight —

Mar 31, 2026: 0

Crowding

—

shares outstanding is an issuer-wide count, not one listing's

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

shares outstanding is an issuer-wide count, not one listing's

Top 10 holders

99.0%

of 13F shares, Herfindahl 0.141

Active holders

-39.5%

like-for-like share change of active filers

5% stakes on record

0 13D, 0 13G

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$10.12

estimated per share

Mar 31, 2026: $10.12

Quarter-end price

—

implied by 13F values

Estimated gain or loss

—

price against the estimated cost

Estimated at a loss

—

of costed 13F value

Estimated cost covers 84.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies OIMAU's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	XRPNU Armada Acquisition Corp. II	3	0.416
2	FVAV Fortress Value Acquisition Corp. V	4	0.400
3	CCII Cohen Circle Acquisition Corp. II	4	0.333
4	RAC Rithm Acquisition Corp.	3	0.313
5	EVAC EQV Ventures Acquisition Corp. II	4	0.312
6	JENA JENA ACQUISITION Corp II	3	0.306
7	SAC Safeguard Acquisition Corp.	3	0.294
8	NSTR NorthStar Earth & Space Enterprises, Inc.	3	0.283
9	FCRS FutureCrest Acquisition Corp.	3	0.265
10	BCSS Bain Capital GSS Investment Corp.	3	0.265

Shareholder Targets

13F filers that own its peers but not OIMAU, quarter ended Jun 30, 2026

Found through its holder-overlap peers: XRPNU, FVAV, CCII, RAC, EVAC, JENA, SAC, NSTR, FCRS, BCSS, RNGT, BIXI, OTGA, CEPV, CEPF. 114 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Harraden Circle Investments, LLC Registered adviser, Diversified active	$100,069,457 6 held	17.1%	CEPF, CCII, FCRS
2	ARISTEIA CAPITAL, L.L.C. Registered adviser, Diversified active	$86,658,183 14 held	3.31%	BIXI, OTGA, BCSS
3	PICTON MAHONEY ASSET MANAGEMENT Non-US, Diversified active	$76,046,103 14 held	0.720%	EVAC, OTGA, RNGT
4	BERKLEY W R CORP Insurer, Diversified active	$69,090,166 14 held	3.79%	EVAC, XRPNU, CEPV
5	Arrington Capital Management, LLC Registered adviser, Concentrated	$60,394,320 1 held	67.1%	XRPNU
6	WOLVERINE ASSET MANAGEMENT LLC Registered adviser, Diversified active	$55,466,674 11 held	2.32%	EVAC, OTGA, XRPNU
7	Centiva Capital, LP Registered adviser, Diversified active	$45,678,992 13 held	1.85%	JENA, CCII, OTGA
8	First Trust Capital Management L.P. Registered adviser, Diversified active	$44,064,586 11 held	4.11%	CEPF, EVAC, CEPV
9	MMCAP International Inc. SPC Unknown, Diversified active	$42,368,550 5 held	4.05%	CEPF, CEPV, FCRS
10	J. Goldman & Co LP Registered adviser, Diversified active	$40,113,507 5 held	1.44%	BCSS, CEPF, CEPV

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: -6

Institutional value: -100.0%

Shares held: -39.5%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Small HGC Investment Management Inc.	+16,249	516,249
Large Clear Street Group Inc.	+4,784	15,338
Mega UBS Group AG	+200	300

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large TORONTO DOMINION BANK	−141,273	548,394
Mid Longaeva Partners L.P.	−1,309	48,691
Large HRT FINANCIAL LP	−344	25,133

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)	Open
Small K2 PRINCIPAL FUND, L.P.	100,000	$0

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Empyrean Capital Partners, LP	1,358,140	$13,730,795
Mega MILLENNIUM MANAGEMENT LLC	752,000	$7,602,720
Large Jain Global LLC	400,000	$4,044,000
Mega DEUTSCHE BANK AG\	76,951	$777,974
Small GABELLI & Co INVESTMENT ADVISERS, INC.	49,100	$496,401

Filter: New 1 Increased 3 Reduced 3 Sold out 7 Unchanged 6

Holder type: Registered adviser 2 Exempt adviser 1 Bank 2 Benefit plan 1 Non-US 1 Unknown 6

Showing 13 of 13

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

K2 PRINCIPAL FUND, L.P. OIMAU

—

100,000

Clear Street Group Inc. OIMAU

—

15,338

OMERS ADMINISTRATION Corp OIMAU

—

500,000

BlueCrest Capital Management Ltd OIMAU

—

800,000

HGC Investment Management Inc. OIMAU

—

516,249

HRT FINANCIAL LP OIMAU

—

25,133

Polar Asset Management Partners Inc. OIMAU

—

800,000

Longaeva Partners L.P. OIMAU

—

48,691

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Balyasny Asset Management L.P.	48,691	$0	—	Other

READYSTATE ASSET MANAGEMENT LP OIMAU

—

62,900

Lineage Point Capital LP OIMAU

—

221,052

UBS Group AG OIMAU

—

300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	300	$0	—	Defined

TORONTO DOMINION BANK OIMAU

—

548,394

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TD SECURITIES (USA) LLC	448,394	$0	—	Defined
Held directly	100,000	$0	—	Sole

LMR Partners LLP OIMAU

—

500,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LMR PARTNERS (DIFC) Ltd	500,000	$0	—	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Deutsche Bank Securities Inc\	76,951	$777,974	100.0%	Defined

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