Location
Cambridge, MA
Holdings as of
9/30/2025
Date filed
11/13/2025
Form type
13F-HR
Num holdings
9
Total value ($000)
$752,637
Net value change ($000)
+90,282 (13.6%)
New positions
1
Sold out positions
3
Turnover %
15.0%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/12/2025 Next filing: 2/13/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
KYMR 63,458 29.7%
SION 42,242 65.9%
KRRO 40,255 283.4%
DYN 28,578 32.9%
IRON 15,303 12.1%
DAWN 3,536 8.5%
IMA 3,079 NEW
GBIO 2,417 91.2%
QTTB 1,025 32.9%
Top Reduces (Value $000, Stocks/ETFs)
Third Harmonic Bio, Inc. -56,484 -100.0%
Vigil Neuroscience, Inc. -46,403 -100.0%
IMA -6,724 -100.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type