Entity type
Company
Filer Snapshot
MFN Partners Management, LP
CIK 0001732811. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
52
Latest filing
14 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.
Latest 13F portfolio
$4.77B
10 holdings for Q1 2026
Open portfolioLargest parsed holding
XPO
$2.22B reported value
Open holding13D/G large stake
CYCN
31 Dec 2024 · 0% ownership
Open 13D/GInsider / owner context
—
No parsed Forms 3/4/5 owner position for this CIK.
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Source: SEC Form 13F
View source filing
13F-HR filed on 14 May 2026 for CIK 0001732811.
- 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$4.77BQuarterly institutional holdings reported on Form 13F.
Latest reported 13F value
13F$4.77BReported market value from the latest parsed Form 13F information table; this is not total assets under management.
Largest 13F holdings
13FXPO TLN QXO RXO PFSI+5 more
OXYWS BHC IE KRSP KRSPWSLargest symbols in the latest parsed Form 13F information table.
Largest 13F holdings
Largest symbols in the latest parsed Form 13F information table.
XPO TLN QXO RXO PFSI OXYWS BHC IE+2 more
KRSP KRSPWSLargest active 13G stakes
Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.
CYCNHow 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.
- Business address
- 222 Berkeley Street, 13 Th Floor, Boston, MA, 02116
- Incorporated in
- DE
Ownership signals
CIK-linked ownership evidence from parsed SEC filings.
1 signal
At a glance
Names, identifiers, and filing context for this profile.
1 identity field
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 1 profile field available
Filer intelligence
What SEC filings say about MFN Partners Management, LP
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Latest parsed 13F shows $4.77B across 10 reported holdings for Q1 2026.
- Largest parsed 13F holding: XPO at $2.22B.
- 1 recent 13D/G stake row found; top row is CYCN at 0% ownership.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Top parsed 13F holdings
Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.
Top 5 concentration
93%
Share of latest parsed 13F value represented by the visible holdings below.
Top 5 reported value
$4.44B
Compared with $4.77B total 13F value.
Top 5 net change
-$124.72M
Position-value change inside the visible top holdings only.
13F concentration map
A simple visual split of the latest parsed 13F portfolio.
Largest add: RXO · Largest trim: CNX
XPO
TLN
QXO
RXO
PFSI
Other holdings
13D/G large-stake context
CYCN
31 Dec 2024 · Common Stock, no par value
Latest update
What changed recently for MFN Partners Management, LP
Latest 13F period: Q1 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
14 May 2026
Page type
Filer profile
Latest period
Q1 2026
Institutional portfolio context was refreshed from a 13F filing filed on 14 May 2026.
Benchmark Context
Benchmark context for this company
MFN Partners Management, LP 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 13F period: Q1 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.
SEC filing record
CIK 0001732811 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
52
First seen
14 Feb 2019
Latest filing
14 May 2026
Entity
Company
Observed form types
13F-HR
13F-HR/A
4
SCHEDULE 13G/A
Latest Filings
Showing the latest 12 of 52 SEC filings for MFN Partners Management, LP.
13F-HR
13F-HR filing
- Filing date
- 14 May 2026
- Reporting date
- 31 Mar 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR/A
13F-HR/A filing
- Filing date
- 01 May 2026
- Reporting date
- 31 Dec 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 12 Feb 2026
- Reporting date
- 31 Dec 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 13 Nov 2025
- Reporting date
- 30 Sep 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 08 Aug 2025
- Reporting date
- 30 Jun 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 13 May 2025
- Reporting date
- 31 Mar 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
SCHEDULE 13G/A
SCHEDULE 13G/A filing
- Filing date
- 12 Feb 2025
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 12 Feb 2025
- Reporting date
- 31 Dec 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 13 Nov 2024
- Reporting date
- 30 Sep 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 12 Aug 2024
- Reporting date
- 30 Jun 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 10 May 2024
- Reporting date
- 31 Mar 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 12 Feb 2024
- Reporting date
- 31 Dec 2023
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing