HDRN · Hadron Energy, Inc. · Holdings

$0.75 -0.01 (-1.32%) At close · Oct 28

Market Cap

$54.34M

71.50M

Volume · Oct 28 54.43K Avg daily vol (3M) 95.06K

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 HDRN: 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: 48

Total Value: $16,561,184

Total Shares: 18,615,361

Institutional Ownership Trend

9 quarters

Holder Concentration

Across 45 13F filers

Top Holder

37.2%

of institutional value

Top 5

76.1%

of institutional value

Top 10

89.3%

of institutional value

HHI

1,926

Moderately concentrated

Who Holds HDRN

Last 8 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: 45 filers, like-for-like change +13.6%; actively managed books +15.8%; index-like books -91.1%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	77.9%	22	+46.6%	12	10
Exempt adviser	1.2%	2	new	2	0
Adviser	1.2%	2	new	2	0
Bank	5.6%	6	-16.6%	3	0
Broker-dealer	0.8%	1	new	1	0
Non-US	2.0%	2	+47175.0%	1	0
Holding company	0.0%	1	-100.0%	0	1
Insurer	0.0%	0	-100.0%	0	1
Unknown	11.3%	9	-34.2%	4	4

Style	Share	Filers	Change	New	Exited
Index-like	0.2%	2	-91.1%	0	1
Systematic-like	3.3%	3	-73.7%	0	3
Concentrated	7.1%	7	+739.3%	6	2
Diversified active	89.4%	33	+22.9%	19	10
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	14.2%	10	+46.7%	6	1
Medium turnover	68.5%	16	+31.0%	6	7
High turnover	15.2%	15	-40.1%	11	8
Unknown	2.1%	4	+217.2%	2	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	39.7%	17	+2.3%	12	7
Medium horizon	36.7%	5	+133.8%	2	3
Long horizon	17.9%	19	+13.8%	10	3
Unknown	5.8%	4	-67.7%	1	3
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	21.3%	11	+146.8%	8	4
$1B to $10B	60.1%	16	-4.6%	8	9
$10B to $100B	8.6%	9	+18.1%	6	0
$100B or more	10.0%	9	+9.9%	3	3
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.8%	2	new	2	0
Pooled investment vehicles	71.5%	17	+47.7%	8	7
Registered funds and BDCs	5.6%	3	+18.2%	2	3
Other investment advisers	0.0%	0	—	0	0
Unknown	22.1%	23	-36.6%	13	6

Private funds	Share	Filers	Change	New	Exited
Hedge funds	72.2%	18	+46.2%	9	8
Private equity funds	0.0%	0	-100.0%	0	1
Other private funds	5.1%	2	new	2	0
Private funds, type not stated	0.4%	1	new	1	0
No private funds	1.3%	3	-42.7%	2	1
Unknown	20.9%	21	-40.0%	11	6

Location	Share	Filers	Change	New	Exited
United States	92.5%	37	+17.1%	21	15
Outside the US	7.5%	8	-16.9%	4	1

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.

Excluded 1 holder with no observed 2026-03-31 13F.

Conviction and Crowding

21 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: 1

Holders above 5%

median weight 0.020%

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

94.9%

of 13F shares, Herfindahl 0.214

Active holders

-54.4%

like-for-like share change of active filers

5% stakes on record

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

How long holders have held it value-weighted 5.1 quarters

Under 1 year 30.3% 1 to 3 years 69.7% 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

$7.41

estimated per share

Mar 31, 2026: $10.45

Quarter-end price

$2.03

implied by 13F values

Estimated gain or loss

-72.6%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 41.2% 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 HDRN's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	EURK Eureka Acquisition Corp	3	0.433
2	AACP Apogee Acquisition Corp	4	0.354
3	APUR Aperture AC	3	0.335
4	CCAQ Collective Acquisition Corp.	4	0.324
5	ITHA ITHAX Acquisition Corp III	4	0.316
6	TONT Graf Global Corp.	3	0.306
7	QLEP Quantum Leap Acquisition Corp	4	0.302
8	RFAM RF Acquisition Corp III	3	0.294
9	FGII FG Imperii Acquisition Corp.	4	0.289
10	GIX GigCapital9 Corp.	4	0.283

Shareholder Targets

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

Found through its holder-overlap peers: EURK, AACP, APUR, CCAQ, ITHA, TONT, QLEP, RFAM, FGII, GIX, ARCL, RDAG, ADAC, ATLQ, NWAX, CAQ, CEPF, ALOV, CAES, IPXG. 113 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Magnetar Financial LLC Registered adviser, Concentrated	$162,191,377 17 held	1.60%	CAQ, QLEP, AACP
2	Polar Asset Management Partners Inc. Registered adviser, Systematic-like	$137,742,446 18 held	3.20%	QLEP, AACP, CAES
3	TENOR CAPITAL MANAGEMENT Co., L.P. Registered adviser, Diversified active	$123,693,755 12 held	7.79%	GIX, IPXG, ADAC
4	GLAZER CAPITAL, LLC Registered adviser, Diversified active	$118,888,210 19 held	3.93%	GIX, QLEP, RDAG
5	ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser, Diversified active	$104,373,487 7 held	0.150%	IPXG, FGII, CAQ
6	HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active	$94,686,750 14 held	5.38%	ATLQ, AACP, GIX
7	MMCAP International Inc. SPC Unknown, Diversified active	$89,933,517 10 held	7.77%	RDAG, CEPF, CAES
8	TWO SIGMA INVESTMENTS, LP Registered adviser, Systematic-like	$85,341,641 19 held	0.070%	CEPF, RDAG, NWAX
9	MILLENNIUM MANAGEMENT LLC Registered adviser, Systematic-like	$83,496,377 13 held	0.060%	GIX, ITHA, QLEP
10	Radcliffe Capital Management, L.P. Registered adviser, Diversified active	$70,602,462 17 held	7.46%	ALOV, CEPF, ADAC

Fund Ownership of HDRN by Fund Type

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

Index funds and index ETFs hold 0.06% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.06%	+0.06 pp	39,838	1
Index ETFs	0.00%	0.00 pp	0	0
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.00%	-0.07 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.06%	-0.01 pp	39,838	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 25 Exempt adviser 2 Adviser 2 Bank 6 Broker-dealer 1 Non-US 2 Holding company 1 Unknown 9

Showing 56 of 56

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

ARISTEIA CAPITAL, L.L.C.

$5,793,429

34.98%

2,853,906

MIZUHO SECURITIES USA LLC

$2,949,650

17.81%

1,453,030

Yakira Capital Management, Inc.

$1,616,322

9.76%

796,218

Yorkville Advisors Global, LP

$827,444

5.00%

407,608

Cable Car Capital, LP

$812,000

4.90%

400,000

Centiva Capital, LP

$573,696

3.46%

282,609

Harraden Circle Investments, LLC

$573,696

3.46%

282,609

METEORA CAPITAL, LLC

$383,670

2.32%

189,000

ARISTEIA CAPITAL, L.L.C. HDRNW

$338,710

2.05%

1,986,571

Periscope Capital Inc.

$286,847

1.73%

141,304

L1 Global Manager Pty Ltd

$286,847

1.73%

141,304

AQR Arbitrage LLC HDRNW

$242,812

1.47%

1,597,445

Ionic Capital Management LLC

$214,968

1.30%

105,896

Linden Advisors LP HDRNW

$209,500

1.27%

1,172,357

Yakira Capital Management, Inc. HDRNW

$204,499

1.23%

1,265,466

BOOTHBAY FUND MANAGEMENT, LLC

$176,476

1.07%

86,934

BARCLAYS PLC HDRNW

$137,360

0.83%

850,000

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	850,000	$137,360	100.0%	Defined

WHITEBOX ADVISORS LLC HDRNW

$130,007

0.79%

804,500

JPMORGAN CHASE & CO

$111,000

0.67%

54,680

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

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	54,680	$111,000	100.0%	Defined

SIGNATUREFD, LLC

$66,836

0.40%

51,020

BNP PARIBAS ARBITRAGE, SA HDRNW

$60,988

0.37%

377,400

Harraden Circle Investments, LLC HDRNW

$60,423

0.36%

373,907

GEODE CAPITAL MANAGEMENT, LLC

$59,255

0.36%

29,190

UBS Group AG

$49,485

0.30%

24,377

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	24,377	$49,485	100.0%	Defined

SummitTX Capital, L.P.

$44,660

0.27%

22,000

BOOTHBAY FUND MANAGEMENT, LLC HDRNW

$44,339

0.27%

21,842

Valeo Financial Advisors, LLC

$39,300

0.24%

30,000

Clear Street Group Inc. HDRNW

$34,979

0.21%

216,453

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

$28,350

0.17%

175,000

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.	175,000	$28,350	100.0%	Defined

Lineage Point Capital LP

$26,925

0.16%

13,264

BLUEFIN CAPITAL MANAGEMENT, LLC HDRNW

$22,911

0.14%

141,429

Haverford Trust Co

$20,300

0.12%

10,000

KINGSWOOD WEALTH ADVISORS, LLC

$15,433

0.09%

11,781

Bulldog Investors, LLP HDRNW

$14,428

0.09%

89,285

Venture Visionary Partners LLC

$13,100

0.08%

10,000

Valeo Financial Advisors, LLC HDRNW

$12,490

0.08%

100,000

TORONTO DOMINION BANK HDRNW

$12,239

0.07%

75,550

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	75,550	$12,239	100.0%	Defined

LMR Partners LLP HDRNW

$12,120

0.07%

75,000

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	75,000	$12,120	100.0%	Sole

Shaolin Capital Management LLC HDRNW

$10,651

0.06%

65,909

WOLVERINE ASSET MANAGEMENT LLC HDRNW

$10,530

0.06%

65,161

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

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	65,161	$10,530	100.0%	Defined

StoneX Group Inc. HDRNW

$7,076

0.04%

30,000

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

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	30,000	$7,076	100.0%	Defined

Ionic Capital Management LLC HDRNW

$6,703

0.04%

41,482

READYSTATE ASSET MANAGEMENT LP HDRNW

$6,080

0.04%

37,533

Cerity Partners LLC HDRNW

$4,040

0.02%

25,000

Lineage Point Capital LP HDRNW

$2,790

0.02%

17,264

UBS Group AG HDRNW

$2,634

0.02%

16,259

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	16,259	$2,634	100.0%	Defined

US BANCORP \DE\ HDRNW

$2,424

0.01%

15,000

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

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	15,000	$2,424	100.0%	Defined

Global Retirement Partners, LLC HDRNW

$323

0.00%

2,001

WELLS FARGO & COMPANY/MN

$203

0.00%

100

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

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO CLEARING SERVICES, LLC	100	$203	100.0%	Defined

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND HDRNW

$130

0.00%

800

MORGAN STANLEY

$93

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	46	$93	100.0%	Defined

Mint Tower Capital Management B.V. HDRNW

$11

0.00%

65,209

Virtu Financial LLC HDRNW

0.00%

10,588

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

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	10,588	$2	100.0%	Defined

CITADEL ADVISORS LLC HDRNW

—

335,023

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

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	335,023	$0	—	Defined

Verition Fund Management LLC HDRNW

—

244,051

Calamos Advisors LLC HDRNW

—

925,000

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