NSTR · Viking Acquisition Corp I · Holdings

$4.26 -0.28 (-6.17%)

Market Cap

$142.22M

31.33M

Volume · Oct 5 348.5K Avg daily vol (2 sessions) 292.85K

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 →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 58

Total Value: $219,166,145

Total Shares: 21,444,830

Institutional Ownership Trend

3 quarters

Holder Concentration

Across 58 13F filers · Δ vs Mar 31, 2026

Top Holder

8.8%

−0.4 pts

Top 5

34.5%

+5.9 pts

Top 10

51.2%

+5.0 pts

HHI

381

Broadly held+35

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +10

Institutional value: +12.9%

Shares held: +9.7%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid METEORA CAPITAL, LLC	+961,079	1,885,107
Mid SONA ASSET MANAGEMENT (US) LLC	+300,000	428,614
Mid Polar Asset Management Partners Inc.	+248,900	748,900
Large Centiva Capital, LP	+50,500	300,500
Small K2 PRINCIPAL FUND, L.P.	+30,000	200,301

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large Hudson Bay Capital Management LP	−550,000	100,000
Mid GLAZER CAPITAL, LLC	−432,386	720,109
Large Verition Fund Management LLC	−429,984	360,000
Large ADAGE CAPITAL PARTNERS GP, L.L.C.	−375,000	1,425,000
Small Lineage Point Capital LP	−371,747	126,253

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid HIGHBRIDGE CAPITAL MANAGEMENT LLC	1,394,949	$14,256,378
Mid Fort Baker Capital Management LP	1,365,503	$13,955,440
Small Decagon Asset Management LLP	1,330,620	$13,598,936
Large LMR Partners LLP	500,000	$5,110,000
Large Alberta Investment Management Corp	500,000	$5,110,000

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega HighTower Advisors, LLC	929,986	$9,234,760
Mid First Trust Capital Management L.P.	649,998	$6,454,480
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	300,000	$2,979,000
Large TORONTO DOMINION BANK	155,417	$1,543,290
Small HEIGHTS CAPITAL MANAGEMENT, INC	50,000	$496,500

Filter: New 17 Increased 5 Reduced 20 Sold out 7 Unchanged 16

Showing 58 of 58

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

METEORA CAPITAL, LLC

$19,265,793

8.79%

1,885,107

ADAGE CAPITAL PARTNERS GP, L.L.C.

$14,563,500

6.64%

1,425,000

HIGHBRIDGE CAPITAL MANAGEMENT LLC

$14,256,378

6.50%

1,394,949

Fort Baker Capital Management LP

$13,955,440

6.37%

1,365,503

Decagon Asset Management LLP

$13,598,936

6.20%

1,330,620

Polar Asset Management Partners Inc.

$7,653,758

3.49%

748,900

GLAZER CAPITAL, LLC

$7,359,513

3.36%

720,109

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

$7,154,000

3.26%

700,000

Linden Advisors LP

$7,154,000

3.26%

700,000

Magnetar Financial LLC

$7,153,928

3.26%

699,993

D. E. Shaw & Co., Inc.

$6,995,119

3.19%

684,454

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.	684,454	$6,995,119	100.0%	Defined

TENOR CAPITAL MANAGEMENT Co., L.P.

$6,643,000

3.03%

650,000

Radcliffe Capital Management, L.P.

$5,126,515

2.34%

501,616

Alberta Investment Management Corp

$5,110,000

2.33%

500,000

LMR Partners LLP

$5,110,000

2.33%

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	$5,110,000	100.0%	Sole

PICTON MAHONEY ASSET MANAGEMENT

$5,109,979

2.33%

499,998

SONA ASSET MANAGEMENT (US) LLC

$4,380,434

2.00%

428,614

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	428,614	$4,380,434	100.0%	Other

AQR Arbitrage LLC

$4,328,292

1.97%

423,512

ARISTEIA CAPITAL, L.L.C.

$4,088,000

1.87%

400,000

TWO SIGMA INVESTMENTS, LP

$3,704,750

1.69%

362,500

Verition Fund Management LLC

$3,679,200

1.68%

360,000

Governors Lane LP

$3,577,000

1.63%

350,000

Centiva Capital, LP

$3,071,110

1.40%

300,500

MOORE CAPITAL MANAGEMENT, LP

$3,066,000

1.40%

300,000

BOOTHBAY FUND MANAGEMENT, LLC

$2,944,320

1.34%

288,094

Wealthspring Capital LLC

$2,830,786

1.29%

276,985

BNP PARIBAS ARBITRAGE, SA

$2,691,283

1.23%

263,335

Mercuria Capital Strategies, LLC

$2,555,000

1.17%

250,000

WHITEBOX ADVISORS LLC

$2,555,000

1.17%

250,000

Context Capital Management, LLC

$2,555,000

1.17%

250,000

Periscope Capital Inc.

$2,555,000

1.17%

250,000

RIVERNORTH CAPITAL MANAGEMENT, LLC

$2,551,944

1.16%

249,701

Shaolin Capital Management LLC

$2,292,683

1.05%

224,333

BERKLEY W R CORP

$2,126,107

0.97%

208,034

K2 PRINCIPAL FUND, L.P.

$2,047,076

0.93%

200,301

O'Connor Alternative Investments LLC

$1,533,000

0.70%

150,000

Lineage Point Capital LP

$1,290,305

0.59%

126,253

Clear Street Group Inc.

$1,107,112

0.51%

108,328

READYSTATE ASSET MANAGEMENT LP

$1,070,361

0.49%

104,732

Hudson Bay Capital Management LP

$1,022,000

0.47%

100,000

Bulldog Investors, LLP

$1,022,000

0.47%

100,000

Balyasny Asset Management L.P.

$1,022,000

0.47%

100,000

MIZUHO SECURITIES USA LLC

$1,005,648

0.46%

98,400

DLD Asset Management, LP

$1,004,012

0.46%

98,240

Schonfeld Strategic Advisors LLC

$919,800

0.42%

90,000

GRITSTONE ASSET MANAGEMENT LLC

$766,500

0.35%

75,000

Virtu Financial LLC

$677,207

0.31%

66,263

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

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	66,263	$677,207	100.0%	Defined

Stoic Point Capital Management LLC

$511,000

0.23%

50,000

Mint Tower Capital Management B.V.

$511,000

0.23%

50,000

PRELUDE CAPITAL MANAGEMENT, LLC

$511,000

0.23%

50,000

CITADEL ADVISORS LLC

$373,469

0.17%

36,543

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	36,543	$373,469	100.0%	Defined

MILLENNIUM MANAGEMENT LLC

$306,078

0.14%

29,949

Shay Capital LLC

$192,636

0.09%

18,849

Rangeley Capital, LLC

$185,084

0.08%

18,110

StoneX Group Inc.

$160,535

0.07%

15,708

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

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	15,708	$160,535	100.0%	Defined

WOLVERINE ASSET MANAGEMENT LLC

$113,850

0.05%

11,140

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

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	11,140	$113,850	100.0%	Defined

UBS Group AG

$52,684

0.02%

5,155

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	5,155	$52,684	100.0%	Defined

Caitong International Asset Management Co., Ltd

$20

0.00%

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	155,417	$1,543,290	100.0%	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
CVI Investments, Inc.	50,000	$496,500	100.0%	Other

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	25,000	$248,250	100.0%	Other

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