MA
Mpm Asset Management LLC Historical SEC 13F Holdings & Archive (Q3 2025)
Mpm Asset Management LLCCIK: 0001263048
High-turnover traderConcentrated strategyQuality / disciplined sizing
Total reported value
$44.5M
Reporting period: 2025-09-30 · Number of holdings: 4
MPM ASSET MANAGEMENT LLC disclosed 4 holdings in its latest 13F filing for the period ending 2025-09-30, with total reported value of $44.5M and a quarterly turnover rate of 100.0%.
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Personality snowflake
- Concentration
- 100
- Portfolio Stability
- 100
- Momentum
- 50
- Sector conviction
- 0
- Diversification
- 8
- Sizing Uniformity
- 91
Sector classification currently covers about 0% 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.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd HOWL
0.0% -$4.2B
Add DYN
0.0% -$7.1B
Add RPTX
0.0% -$1.1B
Add TRDA
0.0% -$39.6B
Sold out 2662247D
Sold out ADAPY
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TRDA | Entrada Therapeutics Inc | Stock-Other | 57.09% | +0.05% | — | |
| 2 | DYN | Dyne Therapeutics Inc | Stock-Other | 19.40% | +9.12% | — | |
| 3 | HOWL | Werewolf Therapeutics Inc | Stock-Other | 19.08% | +13.05% | — | |
| 4 | RPTX | Repare Therapeutics Inc | Stock-Other | 4.43% | +2.84% | — |
Portfolio Performance
Performance for Q3 2026
+12.4%
Performance Last 4 Quarters
+33%
- Stdev
- +51.4%
- Beta
- +0.84
- Alpha
- -7.7%
- Max Drawdown
- -71.8%
- Annualized Perf
- -4.4%
- Batting Avg vs S&P
- +50%
- Sortino
- +0.25
- Stutzer
- +0.05
- Treynor
- +0.11
- Sterling
- -0.09
- Calmar
- -0.06
- Information Ratio
- -0.22
- Tracking Error
- +50.3%
- Stdev Down
- +35.9%
- Winning Months %
- +55.6%
- Losing Months %
- +44.4%
- Best 12 Months
- +127.1%
- Worst 12 Months
- -71.1%
- Efficiency Ratio
- +0.03
- Sharpe
- +0.18
- Stdev Sectors
- —
- Skewness
- -0.33
- Kurtosis
- -0.06
- Upside Potential
- +2.09
Reported value over time
Sector allocation
Not enough sector-mapped data yet
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2025 Q3 | 4 | $44.5M | 100 | ||
| 2025 Q2 | 5 | $43.3M | 0 | ||
| 2025 Q1 | 6 | $69.4M | 100 | ||
| 2024 Q4 | 6 | $124.4M | 0 | ||
| 2024 Q3 | 6 | $145.3M | 0 | ||
| 2024 Q2 | 6 | $182.1M | 0 | ||
| 2024 Q1 | 6 | $245.2M | 0 | ||
| 2023 Q4 | 7 | $203.5M | 0 | ||
| 2023 Q3 | 7 | $186.7M | 0 | ||
| 2023 Q2 | 8 | $203.9M | 0 | ||
| 2023 Q1 | 9 | $240.0M | 0 | ||
| 2022 Q4 | 9 | $239.0M | 0 | ||
| 2022 Q3 | 9 | $262.6M | 0 | ||
| 2022 Q2 | 10 | $237.0M | 0 | ||
| 2022 Q1 | 10 | $292.6M | 0 | ||
| 2021 Q4 | 10 | $462.7M | 0 | ||
| 2021 Q3 | 9 | $431.5M | 0 | ||
| 2021 Q2 | 9 | $537.9M | 98 | ||
| 2021 Q1 | 8 | $517.6M | 31 | ||
| 2020 Q4 | 8 | $706.6M | 37 | ||
| 2020 Q3 | 8 | $536.3M | 52 | ||
| 2020 Q2 | 6 | $336.1M | 69 | ||
| 2020 Q1 | 5 | $164.4M | 37 | ||
| 2019 Q4 | 5 | $227.2M | 10 | ||
| 2019 Q3 | 5 | $233.7M | 11 | ||
| 2019 Q2 | 5 | $247.5M | 29 | ||
| 2019 Q1 | 7 | $242.5M | 74 | ||
| 2018 Q4 | 6 | $118.2M | 23 | ||
| 2018 Q3 | 7 | $147.7M | 73 | ||
| 2018 Q2 | 9 | $258.2M | 35 | ||
| 2018 Q1 | 9 | $259.6M | 25 | ||
| 2017 Q4 | 9 | $249.5M | 53 | ||
| 2017 Q3 | 8 | $204.9M | 18 | ||
| 2017 Q2 | 9 | $230.2M | 14 | ||
| 2017 Q1 | 8 | $207.9M | 20 | ||
| 2016 Q4 | 8 | $211.9M | 42 | ||
| 2016 Q3 | 8 | $305.3M | 10 | ||
| 2016 Q2 | 14 | $308.3M | 28 | ||
| 2016 Q1 | 15 | $322.7M | 71 | ||
| 2015 Q4 | 15 | $560.4M | 20 | ||
| 2015 Q3 | 16 | $650.1M | 31 | ||
| 2015 Q2 | 15 | $597.6M | 41 | ||
| 2015 Q1 | 15 | $468.9M | 11 | ||
| 2014 Q4 | 15 | $450.3M | 51 | ||
| 2014 Q3 | 13 | $305.6M | 30 | ||
| 2014 Q2 | 14 | $297.3M | 78 | ||
| 2014 Q1 | 12 | $236.3M | 39 | ||
| 2013 Q4 | 12 | $309.6M | 51 | ||
| 2013 Q3 | 11 | $354.6M | 55 | ||
| 2013 Q2 | 10 | $225.9M | 0 |
Holding changes this quarter
Mpm Asset Management LLC's most significant position changes for 2025-09-30: Sold out: Iteos Therapeutics Inc (2662247D); Sold out: Adaptimmune Therapeutics-adr (ADAPY).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | HOWL | Werewolf Therapeutics Inc | +13.1% | — | Unchanged |
| 2 | DYN | Dyne Therapeutics Inc | +9.1% | — | Unchanged |
| 3 | RPTX | Repare Therapeutics Inc | +2.8% | — | Unchanged |
| 4 | TRDA | Entrada Therapeutics Inc | +0.1% | — | Unchanged |
| 5 | 2662247D | Iteos Therapeutics Inc | — | EXIT | Sold out |
| 6 | ADAPY | Adaptimmune Therapeutics-adr | — | EXIT | Sold out |
Filing History
FAQ
What is Mpm Asset Management LLC and what type of investor is it?
Mpm Asset Management LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2025-09-30), the firm manages a tracked equity portfolio valued at approximately $44.5M, spread across 4 disclosed positions.
What are Mpm Asset Management LLC's largest equity positions?
Based on the latest 13F filing, Mpm Asset Management LLC's top holdings by market value are:
1. Entrada Therapeutics Inc (TRDA) — $25.4M (57.1%)
2. Dyne Therapeutics Inc (DYN) — $8.6M (19.4%)
3. Werewolf Therapeutics Inc (HOWL) — $8.5M (19.1%)
4. Repare Therapeutics Inc (RPTX) — $2.0M (4.4%)
What changes did Mpm Asset Management LLC make in its most recent portfolio filing?
In the latest quarter, Mpm Asset Management LLC took a more defensive posture — trimming 0 positions and completely exiting 2 holdings. The largest of these moves: Sold out: Iteos Therapeutics Inc (2662247D); Sold out: Adaptimmune Therapeutics-adr (ADAPY)
What sectors does Mpm Asset Management LLC focus on?
Sector breakdown data is not yet available for Mpm Asset Management LLC. Check back after the next 13F processing cycle.
Investment Profile
Mpm Asset Management LLC returned an annualized -4.4% over the trailing 36 months — underperforming the S&P 500 by 7.7 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.84 (less volatile than the market) and a 50% quarterly batting average against the index.
Its portfolio is concentrated and fast-trading.
Its turnover score has risen from 0 to 100 over the past 4 quarters — a shift toward more active trading.
It has added to its HOWL position over the past two quarters (+$4.3M, now $8.5M), while trimming TRDA over the same stretch (-$14.2M, still holding $25.4M).
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IW
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Developer Access
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REST API
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