SEC 13F Intelligence

Managers / Q3 2021 · view latest →

Mass General Brigham, Inc

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

Reported Value
$371M
Q3 2021
Positions
7
Filings on Record
24
2019–present window
Filed
Oct 8, 2021
original filing

Summary

Mass General Brigham, Inc reported $371M in U.S.-listed holdings across 7 positions for Q3 2021.

The portfolio is heavily concentrated: Ishares Core Sp 500 Etf alone accounts for 54.5% of reported value.

Compared with Q2 2021, the fund opened 3 new positions and exited 5.

Portfolio Metrics

Turnover
+0.6%
vs prior filed quarter
Largest Position
+54.5%
Ishares Core Sp 500 Etf
New / Exited
3 / 5
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
ETP: 90.4%Common Stock: 8.2%ADR: 1.4%
  • ETP · 90.4% · $335M
  • Common Stock · 8.2% · $30M
  • ADR · 1.4% · $5M

Quarter-over-Quarter Changes full breakdown →

vs Q2 2021 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
XPEVXPENG INCNEW+38.4K38.4K+$1M$1M
NRIXNURIX THERAPEUTICS INCNEW+15.9K15.9K+$476,000$476,000
FULCFULCRUM THERAPEUTICS INCNEW+15.9K15.9K+$447,000$447,000
DOCUDOCUSIGN INCSOLD OUT−4.0K0−$1M$0
SNOWSNOWFLAKE INC CLASS ASOLD OUT−4.5K0−$1M$0
CRISPR THERAPEUTICS AGSOLD OUT−6.5K0−$1M$0
DELLDELL TECHNOLOGIES CSOLD OUT−4.0K0−$403,000$0
JNCEEURJOUNCE THERAPEUTICS INCSOLD OUT−19.3K0−$131,000$0

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

Holdings — Q3 2021

7 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1ISHARES CORE SP 500 ETFETF54.48%$202M468.7K
2ISHARES CORE U.S. AGGREGATE ETFETF35.90%$133M1.16M
3COINCOINBASE GLOBAL INC CLASS Ahistory →CL A7.91%$29M128.9K
4PDDPINDUODUO INC ADRhistory →ADR1.08%$4M44.2K
5XPEVXPENG INCADS0.37%$1M38.4K
6NRIXNURIX THERAPEUTICS INCCOM0.13%$476,00015.9K
7FULCFULCRUM THERAPEUTICS INCCOM0.12%$447,00015.9K

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 ↗.