Filer Snapshot

WHITEBOX ADVISORS LLC

CIK 0001257391. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Company

Total filings

66

Latest filing

15 May 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13F-HR for Q1 2026. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

Western Digital Corp

$1.46B reported value

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13D/G large stake

ELBM

31 Mar 2026 · 9.9% ownership

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Source: SEC Form 13F

13F-HR filed on 15 May 2026 for CIK 0001257391.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

13F portfolio$6.77B

Quarterly institutional holdings reported on Form 13F.

Forms 3/4/5 positions$679.8K

Reporting-owner positions with enough filing detail to estimate value.

Latest reported 13F value

13F
$6.77B

Reported market value from the latest parsed Form 13F information table; this is not total assets under management.

Forms 3/4/5 position value

3/4/5
$679.8K

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Largest 13F holdings

13F
WESTERN DIGITAL CORP LUMENTUM HLDGS INC ECHOSTAR CORP ALIBABA GROUP HLDG LTD SPHERE ENTERTAINMENT CO
+13 moreSNOWFLAKE INC APPLIED DIGITAL CORP GTLS PEN TRIP COM GROUP LTD WBS STRATEGY INC COINBASE GLOBAL INC CENTRUS ENERGY CORP LBRDK RIVIAN AUTOMOTIVE INC JETBLUE AIRWAYS CORP UPSTART HLDGS INC

Largest symbols in the latest parsed Form 13F information table.

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

HYMC

Largest 13F holdings

Largest symbols in the latest parsed Form 13F information table.

WESTERN DIGITAL CORP LUMENTUM HLDGS INC ECHOSTAR CORP ALIBABA GROUP HLDG LTD SPHERE ENTERTAINMENT CO SNOWFLAKE INC APPLIED DIGITAL CORP GTLS
+10 morePEN TRIP COM GROUP LTD WBS STRATEGY INC COINBASE GLOBAL INC CENTRUS ENERGY CORP LBRDK RIVIAN AUTOMOTIVE INC JETBLUE AIRWAYS CORP UPSTART HLDGS INC

Largest active 13D stakes

Active large-stake positions disclosed in parsed Schedule 13D filings.

ELBM VTNR

Largest active 13G stakes

Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.

UP ELBM CHAR REED
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
3033 Excelsior Blvd., Suite 500, Minneapolis, MN, 55416
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 2 profile fields available
Incorporated in
DE
Fiscal year end
31 December

Filer intelligence

What SEC filings say about WHITEBOX ADVISORS LLC

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Open 13F portfolio Save filer

Quick read

  • Latest parsed 13F shows $6.77B across 545 reported holdings for Q1 2026.
  • Largest parsed 13F holding: WESTERN DIGITAL CORP at $1.46B.
  • 5 recent 13D/G stake rows found; top row is ELBM at 9.9% ownership.
  • Forms 3/4/5 show insider context for HYMC worth $679.8K.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio 545 rows

Quarterly institutional portfolio holdings.

Open
13D/G stakes 5 rows

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 1 rows

Officer, director, and 10% owner holdings or transactions.

Open

Top parsed 13F holdings

Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.

Q1 2026 - 15 May 2026

Top 5 concentration

44%

Share of latest parsed 13F value represented by the visible holdings below.

Top 5 reported value

$2.99B

Compared with $6.77B total 13F value.

Top 5 net change

+$156.66M

Position-value change inside the visible top holdings only.

13F concentration map

A simple visual split of the latest parsed 13F portfolio.

Largest add: Echostar Corp · Largest trim: CADE

Western Digital Corp Lumentum Hldgs Inc Echostar Corp Lumentum Hldgs Inc Alibaba Group Hldg Ltd Other holdings

13D/G large-stake context

ELBM

31 Mar 2026 · Common Shares, no par value

9.9%
Issuer page 13D/G history

UP

30 Sep 2025 · Class A Common Stock, par value $0.0001 per share

3.9%
Issuer page 13D/G history

VTNR

21 Jan 2025 · Common Stock, $0.001 par value per share

0%
Issuer page 13D/G history

CHAR

31 Dec 2024 · Class A Ordinary Shares, par value $0.0001 per share

4.5%
Issuer page 13D/G history

Forms 3/4/5 insider context

HYMC

08 Mar 2022 · 10% owner

$679.8K
Issuer page Owner page

Latest update

What changed recently for WHITEBOX ADVISORS LLC

New filing available

Latest Schedule 13D/G period: 31 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 May 2026

Page type

Filer profile

Latest period

31 Mar 2026

Schedule 13D/G context is visible from filings filed on 15 May 2026.

Open filer profile Browse recent public updates

Benchmark Context

Benchmark context for this company

WHITEBOX ADVISORS LLC has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.

Why this is notable

Latest Schedule 13D/G period: 31 Mar 2026. That gives you a fresh baseline before you compare this company with peers.

  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
  • Open the facts page first if you want the cleanest path to verification.

Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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SEC filing record

CIK 0001257391 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
66
First seen
13 Feb 2014
Latest filing
15 May 2026
Entity
Company

Observed form types

13F-HR 4 SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A

CIK-linked evidence first

WHITEBOX ADVISORS LLC SEC filings WHITEBOX ADVISORS LLC 13F portfolio WHITEBOX ADVISORS LLC 13D/G history WHITEBOX ADVISORS LLC owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 66 SEC filings for WHITEBOX ADVISORS LLC.

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13F-HR

13F-HR filing

Filing date
15 May 2026
Reporting date
31 Mar 2026
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
22 Apr 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
23 Mar 2026
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
17 Feb 2026
Reporting date
31 Dec 2025
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
14 Nov 2025
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
14 Nov 2025
Reporting date
30 Sep 2025
SEC evidence
Open document Open filing
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
24 Oct 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
24 Oct 2025
Reporting date
Not listed
SEC evidence
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Next action
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
18 Sep 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
25 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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13F-HR

13F-HR filing

Filing date
14 Aug 2025
Reporting date
30 Jun 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
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