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Asset Manager ← All Institutions

MPM BIOIMPACT LLC

Q3 2025 · Filed 2025-11-14
Market Value
$594M
+5.1%
Holdings
47
-2
New Purchases
5
Added To
4
Closed
10
Reduced
2
Top 10 Concentration
50.2%
Turnover
31.9%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
SNDX 3.57% 0.00% +3.57% $21M
MDGL 7.76% 5.38% +2.38% $46M
TRVI 5.25% 3.30% +1.95% $31M
RNAM 5.58% 3.82% +1.76% $33M
XENE 3.41% 1.79% +1.61% $20M
STOK 3.13% 1.59% +1.54% $19M
SRPT 2.27% 0.97% +1.30% $13M
TARS 3.42% 2.45% +0.97% $20M
SLNO 1.71% 0.74% +0.97% $10M
LQDA 0.77% 0.00% +0.77% $5M
PTCT 4.53% 3.79% +0.74% $27M
PVLA 0.71% 0.00% +0.71% $4M
EWTX 4.70% 4.00% +0.71% $28M
CNTX 2.40% 1.71% +0.69% $14M
DYN 3.08% 2.44% +0.64% $18M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
GH 0.00% 4.08% -4.08% $0
MLTX 0.00% 2.62% -2.62% $0
MBX 0.00% 2.62% -2.62% $0
CGEM 7.64% 10.20% -2.56% $45M
CRNX 0.00% 2.19% -2.19% $0
SBTX 2.21% 4.03% -1.82% $13M
OLMA 0.00% 1.80% -1.80% $0
REPL 0.00% 1.62% -1.62% $0
NUVB 0.00% 1.60% -1.60% $0
TSHA 0.00% 1.21% -1.21% $0
RNAC 0.65% 1.26% -0.61% $4M
RARE 2.01% 2.55% -0.54% $12M
AKBA 1.33% 1.86% -0.53% $8M
ZLAB 4.25% 4.62% -0.36% $25M
NTRA 2.68% 2.96% -0.28% $16M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Large Cap 5 $110M 18.5%
Mid Cap 14 $198M 33.4%
Small Cap 19 $212M 35.7%
Micro Cap 9 $73M 12.3%

Portfolio Analytics

Avg Market Cap
$5.0B
Median Market Cap
$1.7B
Avg P/E
47.5
Median P/E
34.0
Avg Dividend Yield
—%
Avg Beta
0.79
# Stocks
47
# ETFs / Funds
0

Top Holdings (47 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 MDGL 7.76% 100,415 $46M $458.66 $16M — —
2 CGEM 7.64% 7,648,268 $45M $5.93 -$12M — —
3 RNAM 5.58% 760,022 $33M $43.57 $12M — —
4 TRVI 5.25% 3,406,955 $31M $9.15 $13M — —
5 EWTX 4.70% 1,720,741 $28M $16.22 $5M — —
6 PTCT 4.53% 438,477 $27M $61.37 $5M — —
7 ZLAB 4.25% 745,060 $25M $33.89 -$805K — —
8 SNDX 3.57% 1,375,674 $21M $15.38 — +1,375,674 — NEW
9 ORIC 3.50% 1,729,378 $21M $12.00 $3M — —
10 TARS 3.42% 341,496 $20M $59.43 $6M — —
11 XENE 3.41% 503,398 $20M $40.15 $10M +180,000 +55.7%
12 STOK 3.13% 789,698 $19M $23.50 $10M — —
13 DYN 3.08% 1,446,361 $18M $12.65 $5M — —
14 CMPX 2.99% 5,075,970 $18M $3.50 $3M -546,535 -9.7%
15 ALKS 2.78% 549,262 $16M $30.00 $763K — —
16 VERA 2.76% 563,075 $16M $29.06 $3M — —
17 NTRA 2.68% 98,924 $16M $160.97 -$788K — —
18 JANX 2.53% 614,282 $15M $24.44 $823K — —
19 RVMD 2.48% 315,722 $15M $46.70 $3M — —
20 CNTX 2.40% 14,705,882 $14M $0.97 $5M — —
21 SRPT 2.27% 700,000 $13M $19.27 $8M +378,304 +117.6%
22 SBTX 2.21% 1,303,399 $13M $10.05 -$10M — —
23 RCKT 2.14% 3,903,381 $13M $3.26 $3M +300 +0.0%
24 RLAY 2.01% 2,282,680 $12M $5.22 $4M — —
25 RARE 2.01% 395,700 $12M $30.08 -$2M — —
26 DBVT 1.78% 1,054,504 $11M $10.00 $896K — —
27 SLNO 1.71% 150,000 $10M $67.60 $6M +100,000 +200.0%
28 SLDB 1.70% 1,634,569 $10M $6.17 $2M — —
29 AKBA 1.33% 2,889,125 $8M $2.73 -$3M — —
30 HOWL 0.80% 2,408,810 $5M $1.97 $2M — —
31 LQDA 0.77% 200,000 $5M $22.74 — +200,000 — NEW
32 PVLA 0.71% 67,423 $4M $62.69 — +67,423 — NEW
33 DSGN 0.70% 555,187 $4M $7.53 $2M — —
34 RNAC 0.65% 380,000 $4M $10.22 -$3M -306,007 -44.6%
35 RAPP 0.36% 71,807 $2M $29.70 — +71,807 — NEW
36 RPTX 0.24% 819,924 $1M $1.76 $303K — —
37 ASMB 0.17% 39,665 $1M $25.60 — +39,665 — NEW
38 TSHA —% — — — -$7M -2,953,562 -100.0% SOLD
39 OLMA —% — — — -$10M -2,378,762 -100.0% SOLD
40 MLTX —% — — — -$15M -313,571 -100.0% SOLD
41 ACLX —% — — — -$2K -37 -100.0% SOLD
42 ADAP —% — — — -$1M -4,411,821 -100.0% SOLD
43 CRNX —% — — — -$12M -428,975 -100.0% SOLD
44 REPL —% — — — -$9M -983,780 -100.0% SOLD
45 NUVB —% — — — -$9M -4,622,590 -100.0% SOLD
46 MBX —% — — — -$15M -1,294,416 -100.0% SOLD
47 GH —% — — — -$23M -442,656 -100.0% SOLD

New Positions

SymbolValue% Port
SNDX $21M 3.57%
LQDA $5M 0.77%
PVLA $4M 0.71%
RAPP $2M 0.36%
ASMB $1M 0.17%

Sold Out Positions

SymbolValue% Port
NUVB — —%
GH — —%
MLTX — —%
MBX — —%
TSHA — —%
REPL — —%
OLMA — —%
CRNX — —%
ADAP — —%
ACLX — —%
View SEC EDGAR Filings for MPM BIOIMPACT LLC →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms