BARINTHUS BIO (BRNS) Institutional Ownership

What the institutions did with BRNS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared

17

filed both this quarter and last

Managers holding

15

+1 on the quarter

Buyers

5

3 opened new

Sellers

4

2 sold out entirely

Buyer share

55.6%

of managers who traded it

Breadth

+11.1

net buyers, as a share of those trading

Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Largest holders

Manager	Shares	% of reported
M&G PLC	5.2M	56.5%
HSG Holding Ltd	1.4M	15.4%
GLR Partners, LLC	1.2M	13.5%
DC Funds, LP	642.2K	7.0%
Rangeley Capital, LLC	185.1K	2.0%
Johns Hopkins University	122.2K	1.3%
MORGAN STANLEY	108.8K	1.2%
Baird Financial Group, Inc.	106.0K	1.2%
CITADEL ADVISORS LLC	76.8K	0.8%
HighTower Advisors, LLC	37.5K	0.4%
RENAISSANCE TECHNOLOGIES LLC	25.0K	0.3%
XTX Topco Ltd	14.8K	0.2%
RHUMBLINE ADVISERS	11.7K	0.1%
TWO SIGMA SECURITIES, LLC	11.1K	0.1%
UBS Group AG	1.0K	0.0%

Largest changes

Manager	Action	Previous	Current	Change
RENAISSANCE TECHNOLOGIES LLC	Reduced	151.0K	25.0K	-126.0K
MORGAN STANLEY	Increased	2.2K	108.8K	+106.6K
GTS SECURITIES LLC	Sold Out	73.2K	0	-73.2K
CITADEL ADVISORS LLC	Reduced	119.0K	76.8K	-42.2K
Rangeley Capital, LLC	Increased	159.5K	185.1K	+25.7K
XTX Topco Ltd	New	0	14.8K	+14.8K
GEODE CAPITAL MANAGEMENT, LLC	Sold Out	11.6K	0	-11.6K
TWO SIGMA SECURITIES, LLC	New	0	11.1K	+11.1K
UBS Group AG	New	0	1.0K	+1.0K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.