CIK: 0001277742
Total reported value
$1.4B
Reporting period: 2026-03-31 · Number of holdings: 10
MHR FUND MANAGEMENT LLC disclosed 10 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $1.4B and a quarterly turnover rate of 18.9%.
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Mhr Fund Management LLC's disclosed holdings carry a Herfindahl concentration index of 0.315 — mathematically equivalent to about 3 equally-sized positions, well below its 10 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.55), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 5% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim LION
0.0% $17.3M
Add TSAT
0.0% $128.0M
Add HAFN
0.0% $42.0M
Trim APO
0.0% -$13.3M
Add IOVA
0.0% $22.6M
Add GFF
+91.5% $8.2M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TSAT | Telesat CORP | Stock-Other | 47.72% | +2.55% | — | |
| 2 | LION | Lionsgate Studios CORP | Stock-Other | 26.39% | -3.19% | — | |
| 3 | HAFN | Hafnia Limited | Stock-Other | 10.28% | +1.80% | — | |
| 4 | IOVA | Iovance Biotherapeutics INC | Stock-Other | 7.43% | +0.62% | — | |
| 5 | APO | Apollo Global Management INC | Stock-Financials | 3.25% | -1.73% | — | |
| 6 | STRZ | Starz Entertainment CORP | Stock-Other | 2.41% | -0.47% | — | |
| 7 | GFF | Griffon CORP | Stock-Industrials | 1.27% | +0.48% | +91.51% | |
| 8 | PAX | Patria Investments Limited | Stock-Other | 0.83% | -0.26% | +12.50% | |
| 9 | WULF | Terawulf INC | Stock-Financials | 0.32% | +0.32% | NEW | |
| 10 | OPTU | Optimum Communications Inc-a | Stock-Comm Services | 0.10% | -0.05% | — |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 0 months of available history
Based on 45% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 10 | $1.4B | 19 | |
| 2025-12-31 | 10 | $1.2B | 15 | |
| 2025-09-30 | 10 | $1.0B | 89 | |
| 2025-06-30 | 9 | $901.6M | 0 | |
| 2025-03-31 | 9 | $832.0M | 100 | |
| 2024-12-31 | 9 | $904.4M | 0 | |
| 2024-09-30 | 9 | $917.0M | 0 | |
| 2024-06-30 | 9 | $820.6M | 0 | |
| 2024-03-31 | 10 | $1.0B | 0 | |
| 2023-12-31 | 10 | $915.2M | 0 | |
| 2023-09-30 | 10 | $815.7M | 0 | |
| 2023-06-30 | 10 | $711.2M | 0 | |
| 2023-03-31 | 10 | $743.2M | 0 | |
| 2022-12-31 | 18 | $586.1M | 0 | |
| 2022-09-30 | 29 | $532.3M | 0 | |
| 2022-06-30 | 29 | $685.5M | 0 | |
| 2022-03-31 | 29 | $1.0B | 0 | |
| 2021-12-31 | 30 | $1.2B | 0 | |
| 2021-09-30 | 31 | $941.5M | 0 | |
| 2021-06-30 | 33 | $1.1B | 69 | |
| 2021-03-31 | 44 | $1.6B | 21 | |
| 2020-12-31 | 7 | $1.3B | 13 | |
| 2020-09-30 | 8 | $1.3B | 32 | |
| 2020-06-30 | 8 | $928.0M | 34 | |
| 2020-03-31 | 8 | $658.4M | 58 | |
| 2019-12-31 | 11 | $1.2B | 15 | |
| 2019-09-30 | 11 | $1.2B | 22 | |
| 2019-06-30 | 11 | $1.3B | 12 | |
| 2019-03-31 | 11 | $1.4B | 11 | |
| 2018-12-31 | 11 | $1.3B | 35 | |
| 2018-09-30 | 11 | $1.9B | 8 | |
| 2018-06-30 | 13 | $1.9B | 9 | |
| 2018-03-31 | 13 | $1.9B | 20 | |
| 2017-12-31 | 13 | $2.2B | 5 | |
| 2017-09-30 | 13 | $2.3B | 28 | |
| 2017-06-30 | 11 | $1.8B | 7 | |
| 2017-03-31 | 10 | $1.6B | 9 | |
| 2016-12-31 | 10 | $1.8B | 98 | |
| 2016-09-30 | 7 | $1.4B | 20 | |
| 2016-06-30 | 8 | $1.2B | 6 | |
| 2016-03-31 | 8 | $1.2B | 31 | |
| 2015-12-31 | 8 | $1.5B | 36 | |
| 2015-09-30 | 7 | $2.1B | 15 | |
| 2015-06-30 | 7 | $2.5B | 15 | |
| 2015-03-31 | 7 | $2.8B | 9 | |
| 2014-12-31 | 7 | $2.9B | 7 | |
| 2014-09-30 | 7 | $2.9B | 14 | |
| 2014-06-30 | 7 | $2.9B | 7 | |
| 2014-03-31 | 6 | $2.7B | 33 | |
| 2013-12-31 | 8 | $3.5B | 18 | |
| 2013-09-30 | 8 | $3.7B | 27 | |
| 2013-06-30 | 9 | $2.9B | 0 |
Mhr Fund Management LLC's most significant position changes for 2026-03-31: New buy: Terawulf INC (WULF); Sold out: Dynavax Technologies CORP (DVAX); Add: Griffon CORP (GFF) — shares +91.51%; Add: Patria Investments Limited (PAX) — shares +12.50%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TSAT | Telesat CORP | +2.6% | — | Unchanged |
| 2 | HAFN | Hafnia Limited | +1.8% | — | Unchanged |
| 3 | IOVA | Iovance Biotherapeutics INC | +0.6% | — | Unchanged |
| 4 | GFF | Griffon CORP | +0.5% | +91.51% | Add |
| 5 | OPTU | Optimum Communications Inc-a | -0.1% | — | Unchanged |
| 6 | PAX | Patria Investments Limited | -0.3% | +12.50% | Add |
| 7 | STRZ | Starz Entertainment CORP | -0.5% | — | Unchanged |
| 8 | APO | Apollo Global Management INC | -1.7% | — | Unchanged |
| 9 | LION | Lionsgate Studios CORP | -3.2% | — | Unchanged |
| 10 | WULF | Terawulf INC | — | NEW | New buy |
| 11 | DVAX | Dynavax Technologies CORP | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-15 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-16 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-14 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-15 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-15 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-16 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-16 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-15 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-17 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-14 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-15 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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