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MAM

MPM Asset Management Portfolio holdings

AUM $44.5M
1-Year Est. Return 47.28%
This Fund
S&P 500
This Quarter Est. Return
+15.14%
1 Year Est. Return
-47.28%
3 Year Est. Return
+5.89%
5 Year Est. Return
-18.52%
10 Year Est. Return
+3.53%
AUM
$44.5M
AUM Growth
+$1.16M
Cap. Flow
-$1.15M
Cap. Flow %
-2.59%
Top 10 Hldgs %
100%
Holding
5
New
–
Increased
–
Reduced
–
Closed
1

Top Buys

No buys this quarter

Top Sells

Rank Stock Value
1
ADAP
Adaptimmune Therapeutics
ADAP
+$1.15M

Sector Composition

Rank Sector Weight
1 Healthcare 100%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TRDA icon
1
Entrada Therapeutics
TRDA
$273M
$25.4M 57.09%
4,381,062
– –
DYN icon
2
Dyne Therapeutics
DYN
$4.68B
$8.63M 19.4%
682,376
– –
HOWL icon
3
Werewolf Therapeutics
HOWL
$45.8M
$8.49M 19.08%
4,309,860
– –
RPTX
4
DELISTED
Repare Therapeutics
RPTX
$1.97M 4.43%
1,121,318
– –
ADAP
5
DELISTED
Adaptimmune Therapeutics
ADAP
– –
-4,809,677
Closed -$1.15M

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MPM Asset Management's Q3 2025 Portfolio in Review

As of Q3 2025, MPM Asset Management held 5 positions worth $44.5M, up 2.7% from $43.3M the previous quarter. Its ten largest holdings account for 100% of the portfolio.

MPM Asset Management's Q3 2025 filing shows 1 closed position. The largest sale was Adaptimmune Therapeutics, an estimated $1.15M.

By sector, the portfolio is most concentrated in Healthcare at 100% of assets, unchanged from a quarter earlier.

  • MPM Asset Management fully exited Adaptimmune Therapeutics in Q3 2025, selling an estimated $1.15M.
  • MPM Asset Management's ten largest holdings make up 100% of its $44.5M portfolio in Q3 2025.
  • MPM Asset Management opened 0 new positions and closed 1 in Q3 2025.
  • MPM Asset Management's portfolio value rose 2.7% quarter-over-quarter to $44.5M.

Based on MPM Asset Management's 13F filing for Q3 2025, filed 14 Nov 2025.