MFN Partners Management, LP — Quarter-over-Quarter 13F Allocation Shifts Q1 2026
In Q1 2026, MFN Partners Management, LP initiated 2 new positions, increased allocation to 1 existing position, trimmed 1 position, and exited 1 position entirely. The fund's 13F equity book grew from $4.71B to $4.77B (+1.4% QoQ) . All deltas are sourced from sequential SEC Form 13F-HR filings; share-count changes reflect explicit trading activity, while weight changes can also include price movement. This page lists every position change reported — the portfolio overview shows a summary of the top shifts.
Net Portfolio Value Change
- $4.71BPrior quarter
- $4.77BCurrent quarter
- + $0.07BNet delta
- +1.4%% change
New Position Initiations Q1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Allocation Weight | History |
|---|---|---|---|
| RICE ACQUISITION CORP 3 | KRSP | 0.52% | History → |
| RICE ACQUISITION CORP 3 | KRSP/WS | 0.01% | Holders → |
Largest Allocation Increases Q1 2026
Largest portfolio-weight increases in existing positions. Share-count delta is shown separately so price-only re-weighting can be distinguished from active adds.
Largest Allocation Reductions Q1 2026
Largest portfolio-weight decreases in existing positions (positions kept open at a lower allocation).
Exited Positions Q1 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 | 6.52% |
Methodology & FAQ
How MFN Partners Management, LP Quarterly Changes Are Computed
Each row above is computed by joining the most recent 13F-HR filing for MFN Partners Management, LP against the immediately preceding quarterly filing for the same fund. Portfolio weights are normalized to exclude listed options for comparability. A complete description of the methodology — including how confidential treatment filings are handled and why share count rather than weight is the cleaner trading signal — is documented in the Methodology.
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, 0.52%), RICE ACQUISITION CORP 3 (KRSP/WS, 0.01%).
Which existing positions saw the largest allocation increases for MFN Partners Management, LP in Q1 2026?
The largest portfolio-weight increases in existing positions were: RXO INC (RXO, +1.20% weight, +1.93% 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 6.52%).
Which existing positions saw the largest allocation reductions for MFN Partners Management, LP in Q1 2026?
The largest portfolio-weight reductions in positions kept open were: QXO, INC. (QXO, -2.87% weight, -22.53% 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.