Free · no sign-up · Q2 2026

Which funds own SEIC

Sei Invts Co in the Q2 2026 filings. At least 2 of the 91 current managers on file reported a position, worth $61m between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding: 2; at least, of 91 current
Combined value: $61m; as reported
Opened: 0; new this quarter
Added to: 1; already held
Trimmed or sold out: 0; 0 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

Manager	Value	Weight	Shares	Change on the quarter	Action
Voloridge Investment Management LLC Quantitative · $23.5bn book	$46m	0.2%	518,314	+$13m+106,463	Added
Markel Group Inc Activist · $13.1bn book	$15m	0.1%	173,200	+$1.6m0	Held

Ownership through time

At least 6 of the 95 managers whose filings are on file listed SEIC in Q2 2026, against 9 in Q2 2013. 1 manager fewer than in Q1 2026: 1 started a position; 1 listed it again; 3 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it

Their combined reported value

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Started in Q2 2026

Brevan Howard Capital Management LP$5.8m

Largest increases, by shares

Voloridge Investment Management LLC411,851 to 518,314 shares+$9.3m
Brevan Howard Capital Management LPnew: 66,482 shares+$5.8m
Holocene Advisors LP42,056 to 52,277 shares+$896k

Largest decreases, by shares

Bridgewater Associates LP232,675 to 144,423 shares-$7.7m

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Voloridge Investment Management LLC	Q3 2018	$45m	$45m
Markel Group Inc	Q2 2013	$34m	$15m
Bridgewater Associates LP	Q3 2015	$28m	$13m
Schonfeld Strategic Advisors LLC	Q1 2017	$17m	$7.9m
Brevan Howard Capital Management LP	Q4 2023	$5.8m	$5.8m
Holocene Advisors LP	Q4 2017	$8.3m	$4.6m
Wellington Management Group LLP	Q2 2013	$207m	last listed Q4 2016
Arrowstreet Capital LP	Q1 2017	$141m	last listed Q4 2021
Citadel Advisors LLC	Q4 2015	$124m	last listed Q3 2019
Janus Henderson Group Ltd	Q1 2018	$71m	last listed Q2 2018
Renaissance Technologies LLC	Q2 2013	$68m	last listed Q1 2026
AQR Capital Management LLC	Q3 2013	$64m	last listed Q4 2024
Millennium Management LLC	Q4 2013	$59m	last listed Q1 2020
Man Group PLC	Q2 2018	$40m	last listed Q1 2026
Acadian Asset Management LLC	Q3 2017	$33m	last listed Q3 2025
Two Sigma Investments LP	Q2 2013	$29m	last listed Q1 2024

What SEIC is worth

Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.

Build the comp set around SEIC →

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

Comps ExplorerValue it against the peers it trades beside Every managerRead any of these books in full Deal tapeWhat buyers paid for whole companies, not slices Hedge fund interviewsHow the room runs, and the stock pitch it wants

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The holdings, every quarter, and the week between

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