Mass General Brigham, Inc

SEC CIK: 0001678378
Latest filing: Aug 7, 2026

SEC filings (opens in a new tab)

RIVN holding history

Rivian Automotive, Inc. in every 13F filed by Mass General Brigham, Inc, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

RIVN overview All 13F holders of RIVN Full Q2 2026 holdings

Shares (Q4 2023): 0; Sold out in Q4 2023
Value: $0
% of portfolio: 0.0%
Quarters held: 3; Since Q1 2023

Holdings of RIVN by Mass General Brigham, Inc, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q4 2023	0	$0	0.0%	−45,074−100.0%	Sold out	Holders
Q3 2023	45,074	$1.09M	10.2%	00.0%	Unchanged	Holders
Q2 2023	45,074	$750.9K	0.7%	00.0%	Unchanged	Holders
Q1 2023	45,074	$698.0K	0.5%	+45,074	New	Holders