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Latest MPM ASSET MANAGEMENT LLC Stock Portfolio

MPM ASSET MANAGEMENT LLC Performance:
2025 Q3: 5.48%YTD: -51.38%2024: 22.93%

Performance for 2025 Q3 is 5.48%, and YTD is -51.38%, and 2024 is 22.93%.

About MPM ASSET MANAGEMENT LLC and 13F Hedge Fund Stock Holdings

MPM ASSET MANAGEMENT LLC is a hedge fund based in BOSTON, MA. On 30-Mar-2023, the fund reported that it had an AUM (Regulated Assets under Management) of $3.4 Billions. In it's latest 13F Holdings report, MPM ASSET MANAGEMENT LLC reported an equity portfolio of $44.5 Millions as of 30 Sep, 2025.

The top stock holdings of MPM ASSET MANAGEMENT LLC are TRDA, DYN, HOWL. The fund has invested 57.1% of it's portfolio in ENTRADA THERAPEUTICS, INC. and 19.4% of portfolio in DYNE THERAPEUTICS, INC.

The fund managers got completely rid off ADAPTIMMUNE THERAPEUTICS PLC (ADAP) stocks.

MPM ASSET MANAGEMENT LLC Annual Return Estimates Vs S&P 500

Our best estimate is that MPM ASSET MANAGEMENT LLC made a return of 5.48% in the last quarter. In trailing 12 months, it's portfolio return was -57.86%.

New Buys

No new stocks were added by MPM ASSET MANAGEMENT LLC

Additions

No additions were made to existing positions by MPM ASSET MANAGEMENT LLC

Reductions

None of the existing positions were reduced by MPM ASSET MANAGEMENT LLC

Sold off

Ticker$ Sold
adaptimmune therapeutics plc-1,152,880

MPM ASSET MANAGEMENT LLC got rid off the above stocks

Sector Distribution

MPM ASSET MANAGEMENT LLC has about 100% of it's holdings in Healthcare sector.

Sector%
Healthcare100

Market Cap. Distribution

MPM ASSET MANAGEMENT LLC has about 0% of it's portfolio invested in the large-cap and mega-cap stocks.

Category%
SMALL-CAP57.1
MICRO-CAP23.5
MID-CAP19.4

Stocks belong to which Index?

About 76.5% of the stocks held by MPM ASSET MANAGEMENT LLC either belong to S&P 500 or RUSSELL 2000 index.

Index%
RUSSELL 200076.5
Others23.5
Top 5 Winners (%)%
HOWL
werewolf therapeutics, inc.
80.7 %
DYN
dyne therapeutics, inc.
32.9 %
RPTX
repare therapeutics, inc.
26.6 %
Top 5 Winners ($)$
HOWL
werewolf therapeutics, inc.
3.8 M
DYN
dyne therapeutics, inc.
2.1 M
RPTX
repare therapeutics, inc.
0.4 M
Top 5 Losers (%)%
TRDA
entrada therapeutics, inc.
-13.7 %
Top 5 Losers ($)$
TRDA
entrada therapeutics, inc.
-4.0 M

MPM ASSET MANAGEMENT LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of MPM ASSET MANAGEMENT LLC

MPM ASSET MANAGEMENT LLC has 4 stocks in it's portfolio. TRDA proved to be the most loss making stock for the portfolio. HOWL was the most profitable stock for MPM ASSET MANAGEMENT LLC last quarter.

Last Reported on: 14 Nov, 2025
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions