SEC 13F Intelligence

Managers / Q4 2023 · view latest →

Mass General Brigham, Inc

CIK 0001678378 · 399 REVOLUTION DRIVE, SUITE 612, SOMERVILLE, MA, 02145 · 8572777268

Reported Value
$28M
Q4 2023
Positions
2
Filings on Record
24
2019–present window
Filed
Jan 24, 2024
original filing

Summary

Mass General Brigham, Inc reported $28M in U.S.-listed holdings across 2 positions for Q4 2023.

The portfolio is heavily concentrated: COIN alone accounts for 80.1% of reported value.

Compared with Q3 2023, the fund opened 1 new position and exited 1.

Portfolio Metrics

Turnover
+5.6%
vs prior filed quarter
Largest Position
+80.1%
Coinbase Global
New / Exited
1 / 1
positions this quarter

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $144MQ4 ’18Q1 ’19: $162MQ2 ’19: $153MQ3 ’19: $436MQ3 ’19Q4 ’19: $290MQ3 ’20: $126MQ4 ’20: $473MQ4 ’20Q1 ’21: $639MQ2 ’21: $410MQ3 ’21: $371MQ3 ’21Q4 ’21: $282MQ1 ’22: $235MQ2 ’22: $214MQ2 ’22Q3 ’22: $192MQ1 ’23: $128,310Q3 ’23: $11MQ3 ’23Q4 ’23: $28MQ1 ’24: $57MQ2 ’24: $21MQ2 ’24Q3 ’24: $44MQ4 ’25: $810MQ1 ’26: $469MQ1 ’26filingsflow.com

Portfolio Composition

By security type
Common Stock: 100.0%
  • Common Stock · 100.0% · $28M

Quarter-over-Quarter Changes full breakdown →

vs Q3 2023 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
SNOWSNOWFLAKE INCNEW+28.1K28.1K+$6M$6M
RIVNRIVIAN AUTOMOTIVE INCSOLD OUT−45.1K0−$1M$0
COINCOINBASE GLOBAL INC CLASS AHELD+0128.9K+$13M$22M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q4 2023

2 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1COINCOINBASE GLOBAL INC CLASS Ahistory →CL A80.05%$22M128.9K
2SNOWSNOWFLAKE INChistory →CL A19.95%$6M28.1K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$469M6May 5, 202613F-HRchanges · EDGAR ↗
Q4 2025$810M7Jan 27, 202613F-HRchanges · EDGAR ↗
Q3 2024$44M5Oct 16, 202413F-HRchanges · EDGAR ↗
Q2 2024$21M4Jul 31, 202413F-HRchanges · EDGAR ↗
Q1 2024$57M5Apr 4, 202413F-HRchanges · EDGAR ↗
Q4 2023$28M2Jan 24, 202413F-HRchanges · EDGAR ↗
Q3 2023$11M2Oct 23, 202313F-HRchanges · EDGAR ↗
Q2 2023Under review7Jul 21, 202313F-HRchanges · EDGAR ↗
Q1 2023$128,3106Apr 5, 202313F-HRchanges · EDGAR ↗
Q4 2022Under review5Jan 19, 202313F-HRchanges · EDGAR ↗
Q3 2022$192M3Oct 19, 202213F-HRchanges · EDGAR ↗
Q2 2022$214M3Jul 27, 202213F-HRchanges · EDGAR ↗
Q1 2022$235M5Apr 15, 202213F-HRchanges · EDGAR ↗
Q4 2021$282M7Jan 19, 202213F-HRchanges · EDGAR ↗
Q3 2021$371M7Oct 8, 202113F-HRchanges · EDGAR ↗
Q2 2021$410M9Jul 19, 202113F-HRchanges · EDGAR ↗
Q1 2021$639M3Apr 12, 202113F-HRchanges · EDGAR ↗
Q4 2020$473M3Feb 8, 202113F-HRchanges · EDGAR ↗
Q3 2020$126M2Oct 23, 202013F-HRchanges · EDGAR ↗
Q4 2019$290M3Jan 15, 202013F-HRchanges · EDGAR ↗
Q3 2019$436M3Oct 30, 201913F-HRchanges · EDGAR ↗
Q2 2019$153M1Jul 29, 201913F-HRchanges · EDGAR ↗
Q1 2019$162M1Apr 18, 201913F-HRchanges · EDGAR ↗
Q4 2018$144M1Jan 30, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.