Mass General Brigham, Inc

Q3 2026 13F-HR Holdings

Location
Somerville, MA
Holdings as of
9/30/2026
Date filed
11/3/2026
Form type
13F-HR
Num holdings
9
Total value ($000)
$456,311
Net value change ($000)
+95,232 (26.4%)
New positions
4
Sold out positions
1
Turnover %
122.4%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/7/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q2 2026
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)
VT 300,466 NEW
SPACE EXPLORATION TECHN CORP 35,322 NEW
LYNTRIS INC 23,598 NEW
RVMD 6,187 9.6%
IOT 1,517 NEW
Top Reduces (Value $000, Stocks/ETFs)
ACWI -197,728 -100.0%
KRMN -71,194 -91.3%
TNGX -2,235 -20.2%
MAZE -376 -5.3%
MDLN -324 -12.0%
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