PTOR · Praetorian Acquisition Corp. · Holdings

$9.97 -0.01 (-0.10%) At close · Oct 26

Market Cap

$338.55M

33.92M

Volume · Oct 23 11.01K Avg daily vol (3M) 42.8K

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 PTOR: 13F, 13D and 13G, insiders and funds →

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 53

Total Value: $179,846,460

Total Shares: 30,154,437

Institutional Ownership Trend

3 quarters

Holder Concentration

Across 53 13F filers

Top Holder

8.3%

of institutional value

Top 5

35.0%

of institutional value

Top 10

56.9%

of institutional value

HHI

437

Broadly held

Who Holds PTOR

Last 3 quarters through Sep 30, 2026 (filing window open)

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, the newest closed quarter: 53 filers, like-for-like change +6.8%; actively managed books +6.8%; index-like books +7.8%.

Holder type	Share	Filers	Change	New
Registered adviser	61.9%	28	+5.5%	4
Exempt adviser	7.6%	2	-2.2%	0
Adviser	1.5%	1	+9.9%	0
Bank	1.9%	2	-23.0%	1
Insurer	3.0%	1	-14.6%	0
Benefit plan	1.5%	1	0.0%	0
Non-US	11.7%	3	+33.3%	0
Holding company	0.0%	1	+320.0%	0
Unknown	11.0%	14	+13.9%	4

Style	Share	Filers	Change	New
Index-like	0.1%	2	+7.8%	0
Systematic-like	10.3%	4	+0.2%	0
Concentrated	16.3%	7	+5.2%	1
Diversified active	73.3%	40	+8.1%	8

Turnover	Share	Filers	Change	New
Low turnover	1.1%	2	+3333640.0%	1
Medium turnover	56.3%	24	+6.3%	3
High turnover	37.8%	24	+1.7%	4
Unknown	4.8%	3	+35.2%	1

Holding horizon	Share	Filers	Change	New
Short horizon	38.6%	26	+3.0%	3
Medium horizon	17.3%	4	+5.1%	1
Long horizon	14.4%	9	+11.1%	3
Unknown	29.6%	14	+11.0%	2

13F book size	Share	Filers	Change	New
Under $1B	20.5%	19	+9.7%	4
$1B to $10B	44.2%	16	+3.8%	1
$10B to $100B	24.0%	11	+9.4%	2
$100B or more	11.3%	7	+8.4%	2

Client base	Share	Filers	Change	New
Pooled investment vehicles	60.4%	25	+5.2%	4
Registered funds and BDCs	1.5%	3	+18.3%	0
Unknown	38.1%	25	+9.0%	5

Private funds	Share	Filers	Change	New
Hedge funds	62.1%	26	+5.2%	4
Other private funds	1.6%	1	0.0%	0
Private funds, type not stated	5.2%	1	0.0%	0
No private funds	0.6%	2	+1.1%	0
Private equity funds	0.0%	0	—	0
Unknown	30.5%	23	+12.1%	5

Location	Share	Filers	Change	New	Exited
United States	76.8%	42	+8.0%	8	0
Outside the US	23.2%	11	+3.0%	1	0

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

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

41 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

9.76% of filers hold it in their top 10

Mar 31, 2026: 2

Holders above 5%

median weight 0.154%

Mar 31, 2026: 0

Crowding

—

the issuer has more than one class of common stock, so its count is the total across classes

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

the issuer has more than one class of common stock, so its count is the total across classes

Top 10 holders

56.9%

of 13F shares, Herfindahl 0.044

Active holders

+52.2%

like-for-like share change of active filers

5% stakes on record

0 13D, 3 13G (2 institutional, 0 passive, 1 exempt)

How long holders have held it value-weighted 1.6 quarters

Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

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

$9.88

estimated per share

Quarter-end price

$9.93

implied by 13F values

Estimated gain or loss

+0.5%

price against the estimated cost

Estimated at a loss

0.000%

of costed 13F value

Estimated cost covers 39.1% 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 PTOR's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	SVAQ Silicon Valley Acquisition Corp.	3	0.567
2	APAC StoneBridge Acquisition II Corp	3	0.530
3	LKSP Lake Superior Acquisition Corp	3	0.530
4	MKLY McKinley Acquisition Corp	3	0.500
5	VHCP Vine Hill Capital Investment Corp. II	3	0.500
6	DMAA Drugs Made In America Acquisition Corp.	3	0.500
7	KOYN CSLM Digital Asset Acquisition Corp III, Ltd	3	0.474
8	VNME Vendome Acquisition Corp I	3	0.452
9	DRDB Roman DBDR Acquisition Corp. II	3	0.401
10	APXT Apex Treasury Corp	3	0.387

Shareholder Targets

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

Found through its holder-overlap peers: SVAQ, APAC, LKSP, MKLY, VHCP, DMAA, KOYN, VNME, DRDB, APXT. 63 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Karpus Management, Inc. Adviser, Diversified active	$93,381,782 8 held	2.73%	DMAA, MKLY, APXT
2	MIZUHO SECURITIES USA LLC Unknown, Index-like	$64,533,539 8 held	1.02%	DMAA, DRDB, MKLY
3	HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active	$62,116,625 7 held	3.68%	DRDB, APXT, DMAA
4	First Trust Capital Management L.P. Registered adviser, Diversified active	$41,949,207 7 held	3.92%	VNME, DMAA, APXT
5	Verition Fund Management LLC Registered adviser, Diversified active	$40,016,650 8 held	0.310%	KOYN, APXT, VHCP
6	Crossingbridge Advisors, LLC Adviser, Diversified active	$39,147,084 8 held	7.69%	DRDB, VNME, APXT
7	ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser, Diversified active	$38,331,000 2 held	0.050%	APXT, VHCP
8	METEORA CAPITAL, LLC Adviser, Diversified active	$36,657,887 6 held	3.55%	VNME, APXT, SVAQ
9	Centiva Capital, LP Registered adviser, Diversified active	$18,313,345 5 held	0.630%	VNME, APXT, VHCP
10	Wealthspring Capital LLC Registered adviser, Diversified active	$15,190,667 3 held	4.42%	KOYN, APXT, MKLY

Fund Ownership of PTOR by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.00% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.00%	0.00 pp	0	0
Index ETFs	0.00%	0.00 pp	0	0
Active ETFs	0.08%	+0.08 pp	26,923	1
Active funds	0.00%	0.00 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.08%	+0.08 pp	26,923	1

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 28 Exempt adviser 2 Adviser 1 Bank 2 Insurer 1 Benefit plan 1 Non-US 3 Holding company 1 Unknown 14

Showing 89 of 89

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Magnetar Financial LLC

$14,895,000

8.28%

1,500,000

Alberta Investment Management Corp

$13,902,000

7.73%

1,400,000

MILLENNIUM MANAGEMENT LLC

$13,107,600

7.29%

1,320,000

TENOR CAPITAL MANAGEMENT Co., L.P.

$10,923,000

6.07%

1,100,000

GLAZER CAPITAL, LLC

$9,953,692

5.53%

1,002,386

AQR Arbitrage LLC

$9,423,262

5.24%

948,969

BERKLEY W R CORP

$7,901,201

4.39%

795,690

Shaolin Capital Management LLC

$7,594,464

4.22%

764,800

Hudson Bay Capital Management LP

$7,447,500

4.14%

750,000

BNP PARIBAS ARBITRAGE, SA

$6,961,118

3.87%

701,019

Governors Lane LP

$6,951,000

3.86%

700,000

D. E. Shaw & Co., Inc.

$4,965,000

2.76%

500,000

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

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	500,000	$4,965,000	100.0%	Defined

Periscope Capital Inc.

$4,965,000

2.76%

500,000

Polar Asset Management Partners Inc.

$4,965,000

2.76%

500,000

PICTON MAHONEY ASSET MANAGEMENT

$4,964,950

2.76%

499,995

WHITEBOX ADVISORS LLC

$3,972,000

2.21%

400,000

RLH Capital LLC

$3,965,327

2.20%

399,328

Clear Street Group Inc.

$3,961,762

2.20%

398,969

TWO SIGMA INVESTMENTS, LP

$3,959,587

2.20%

398,750

SONA ASSET MANAGEMENT (US) LLC

$3,475,500

1.93%

350,000

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

Manager	Shares	Value (USD)	% of position	Discretion
SONA ASSET MANAGEMENT (UK) LLP	350,000	$3,475,500	100.0%	Other

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS

$2,978,990

1.66%

299,999

WOLVERINE ASSET MANAGEMENT LLC

$2,870,733

1.60%

289,097

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

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	289,097	$2,870,733	100.0%	Defined

Radcliffe Capital Management, L.P.

$2,798,661

1.56%

281,839

Linden Advisors LP

$2,482,500

1.38%

250,000

Quarry LP

$2,482,500

1.38%

250,000

Mint Tower Capital Management B.V.

$2,482,500

1.38%

250,000

Logan Stone Capital, LLC

$2,482,460

1.38%

249,996

Kepos Capital LP

$2,211,401

1.23%

222,699

CSS LLC/IL

$2,021,877

1.12%

203,613

Context Capital Management, LLC

$1,986,000

1.10%

200,000

RIVERNORTH CAPITAL MANAGEMENT, LLC

$1,985,980

1.10%

199,998

Parallax Volatility Advisers, L.P.

$1,144,372

0.64%

115,244

DLD Asset Management, LP

$1,087,335

0.60%

109,500

Warberg Asset Management LLC

$992,990

0.55%

99,999

HEIGHTS CAPITAL MANAGEMENT, INC

$594,807

0.33%

59,900

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

Manager	Shares	Value (USD)	% of position	Discretion
CVI Investments, Inc.	59,900	$594,807	100.0%	Other

ABC ARBITRAGE SA

$348,425

0.19%

35,000

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

Manager	Shares	Value (USD)	% of position	Discretion
ABC ARBITRAGE ASSET MANAGEMENT joint	35,000	$348,425	100.0%	Other

Tuttle Capital Management, LLC PTORU

$271,383

0.15%

26,923

Virtu Financial LLC

$199,146

0.11%

20,055

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

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	20,055	$199,146	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$153,944

0.09%

15,503

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

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	15,503	$153,944	100.0%	Other

Rangeley Capital, LLC

$15,808

0.01%

1,592

MORGAN STANLEY

$417

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY CAPITAL SERVICES, LLC	42	$417	100.0%	Defined

UBS Group AG

$268

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	27	$268	100.0%	Defined

Magnetar Financial LLC PTORW

—

500,000

Polar Asset Management Partners Inc. PTORW

—

173,666

Westchester Capital Management, LLC PTORU

—

150,000

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

Manager	Shares	Value (USD)	% of position	Discretion
WESTCHESTER CAPITAL PARTNERS, LLC	1,331	$0	—	Sole
Virtus Investment Advisers, LLC	135,951	$0	—	Other
Held directly	12,718	$0	—	Sole

Parallax Volatility Advisers, L.P. PTORW

—

10,000

ExodusPoint Capital Management, LP PTORW

—

63,333

Hudson Bay Capital Management LP PTORW

—

250,000

STEADFAST CAPITAL MANAGEMENT LP PTORU

—

2,000,000

Radcliffe Capital Management, L.P. PTORW

—

54,109

Kepos Capital LP PTORW

—

64,233

ARISTEIA CAPITAL, L.L.C. PTORU

—

1,350,000

WHITEBOX ADVISORS LLC PTORW

—

133,333

BERKLEY W R CORP PTORW

—

110,056

Context Capital Management, LLC PTORW

—

66,666

ABC ARBITRAGE SA PTORW

—

13,333

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

Manager	Shares	Value (USD)	% of position	Discretion
ABC ARBITRAGE ASSET MANAGEMENT joint	13,333	$0	—	Other

Lineage Point Capital LP PTORU

—

379,009

OMERS ADMINISTRATION Corp PTORU

—

440,000

Walleye Capital LLC PTORW

—

104,600

Linden Advisors LP PTORW

—

83,332

DLD Asset Management, LP PTORW

—

36,499

GLAZER CAPITAL, LLC PTORW

—

281,827

SONA ASSET MANAGEMENT (US) LLC PTORW

—

116,667

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

Manager	Shares	Value (USD)	% of position	Discretion
SONA ASSET MANAGEMENT (UK) LLP	116,667	$0	—	Other

Periscope Capital Inc. PTORW

—

195,600

LMR Partners LLP PTORU

—

1,550,000

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	1,550,000	$0	—	Sole

RLH Capital LLC PTORW

—

49,776

UBS Group AG PTORU

—

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	99	$0	—	Defined

TENOR CAPITAL MANAGEMENT Co., L.P. PTORW

—

366,666

GLAZER CAPITAL, LLC PTORU

—

2,000

Clear Street Group Inc. PTORW

—

121,793

Shaolin Capital Management LLC PTORW

—

287,985

HRT FINANCIAL LP PTORU

—

30,300

Clear Street Group Inc. PTORU

—

2,766

RIVERNORTH CAPITAL MANAGEMENT, LLC PTORW

—

66,666

Lineage Point Capital LP PTORW

—

67,665

TORONTO DOMINION BANK PTORU

—

542,791

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	542,791	$0	—	Defined

PICTON MAHONEY ASSET MANAGEMENT PTORW

—

166,665

Alberta Investment Management Corp PTORW

—

466,666

D. E. Shaw & Co., Inc. PTORW

—

166,666

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

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	166,666	$0	—	Defined

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS PTORW

—

33,333

SUSQUEHANNA INTERNATIONAL GROUP, LLP PTORU

—

10,366

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

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	10,366	$0	—	Other

CSS LLC/IL PTORW

—

132,351

Mint Tower Capital Management B.V. PTORW

—

83,333

MILLENNIUM MANAGEMENT LLC PTORW

—

439,999

AQR Arbitrage LLC PTORW

—

322,003

Decagon Asset Management LLP PTORW

—

77,677

TORONTO DOMINION BANK PTORW

—

12,670

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	12,670	$0	—	Defined

BNP PARIBAS ARBITRAGE, SA PTORW

—

233,673

Governors Lane LP PTORW

—

233,333

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