NuCana plc (NCNA) Institutional Ownership

What the institutions did with NCNA 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

12

filed both this quarter and last

Managers holding

10

+2 on the quarter

Buyers

7

4 opened new

Sellers

2

2 sold out entirely

Buyer share

77.8%

of managers who traded it

Breadth

+55.6

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
StoneX Group Inc.	47.0K	42.4%
CITADEL ADVISORS LLC	27.1K	24.4%
HRT FINANCIAL LP	16.9K	15.2%
Glass Jacobson Investment Advisors llc	15.0K	13.5%
RHUMBLINE ADVISERS	4.7K	4.2%
CITIGROUP INC	188	0.2%
Caitong International Asset Management Co., Ltd	5	0.0%
MORGAN STANLEY	2	0.0%
ACADIAN ASSET MANAGEMENT LLC	2	0.0%
SBI Securities Co., Ltd.	1	0.0%

Largest changes

Manager	Action	Previous	Current	Change
StoneX Group Inc.	New	0	47.0K	+47.0K
HRT FINANCIAL LP	New	0	16.9K	+16.9K
Virtu Financial LLC	Sold Out	13.4K	0	-13.4K
CITADEL ADVISORS LLC	Increased	13.9K	27.1K	+13.2K
JANE STREET GROUP, LLC	Sold Out	10.5K	0	-10.5K
RHUMBLINE ADVISERS	Increased	3.7K	4.7K	+976
CITIGROUP INC	New	0	188	+188
Caitong International Asset Management Co., Ltd	Increased	2	5	+3
SBI Securities Co., Ltd.	New	0	1	+1

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.