MFN Partners Management, LP 13F: Quarter-over-Quarter Portfolio Changes
MFN Partners Management, LP reported a disclosed portfolio value of approximately $4.8 billion in its latest SEC Form 13F-HR filing for Q1 2026, up 1.4% quarter on quarter. Over the quarter, the fund initiated 2 new positions, bought more shares in 1 holding, trimmed 1 holding, and exited 1 position.
MFN Partners Management, LP's top buy was Rxo INC (RXO) . The fund bought 1.9% more shares, lifting the position's portfolio weight by 1.2 percentage points. Its top sell was Cnx Res CORP (CNX) . The fund exited the position completely after it had accounted for 6.5% of the previous portfolio.
New PositionsQ1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| RICE ACQUISITION CORP 3 | KRSP | 0.5% | History → |
| RICE ACQUISITION CORP 3 | KRSP/WS | 0.0% | — |
Top BuysQ1 2026
The fund's top buys among existing positions in Q1 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
Top SellsQ1 2026
The fund's top sells among positions it retained in Q1 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
Full ExitsQ1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| CNX RES CORP | CNX | 6.5% |
Net Portfolio Value ChangeQ1 2026
- $4.7BPrior quarter
- $4.8BCurrent quarter
- +$0.1BNet delta
- +1.4%% change
Methodology & FAQ
How MFN Partners Management, LP Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for MFN Partners Management, LP: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description — including how confidential treatment filings are handled — is documented in the Methodology.
What stocks did MFN Partners Management, LP buy in Q1 2026?
In Q1 2026, MFN Partners Management, LP initiated 2 new positions (RICE ACQUISITION CORP 3 (KRSP), RICE ACQUISITION CORP 3 (KRSP/WS)); bought more shares of RXO INC (RXO).
What stocks did MFN Partners Management, LP sell in Q1 2026?
In Q1 2026, MFN Partners Management, LP fully sold 1 position (CNX RES CORP (CNX)); reduced holdings in QXO INC (QXO).
Which positions did MFN Partners Management, LP initiate in Q1 2026?
MFN Partners Management, LP established 2 new positions in Q1 2026: RICE ACQUISITION CORP 3 (KRSP, 0.5%), RICE ACQUISITION CORP 3 (KRSP/WS, 0.0%).
Which existing positions saw the largest allocation increases for MFN Partners Management, LP in Q1 2026?
Of 1 existing position with share-count increases in Q1 2026, the largest were: RXO INC (RXO, +1.2% weight, +1.9% shares).
Which positions did MFN Partners Management, LP fully exit in Q1 2026?
MFN Partners Management, LP fully exited 1 position in Q1 2026: CNX RES CORP (CNX, last-reported weight 6.5%).
Which existing positions saw the largest allocation reductions for MFN Partners Management, LP in Q1 2026?
Of 1 existing position with share-count reductions in Q1 2026, the largest were: QXO INC (QXO, -2.9% weight, -22.5% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.