Free · no sign-up · Q2 2026

Which funds own MPC

Marathon Pete Corp in the Q2 2026 filings. At least 9 of the 91 current managers on file reported a position, worth $1.6bn 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: 9; at least, of 91 current
Combined value: $1.6bn; as reported
Opened: 2; new this quarter
Added to: 3; already held
Trimmed or sold out: 7; 3 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
Wellington Management Group LLP Long-only · $580bn book	$832m	0.1%	3,252,153	-$545m-2,385,034	Trimmed
Two Sigma Investments LP Quantitative · $138bn book	$317m	0.2%	1,239,241	-$55m-285,045	Trimmed
Squarepoint Ops LLC Multi-strategy · $90.5bn book	$142m	0.2%	554,045	+$51m+184,592	Added
Acadian Asset Management LLC Quantitative · $84.2bn book	$96m	0.1%	375,026	-$34m-155,562	Trimmed
Bridgewater Associates LP Macro · $24.4bn book	$89m	0.4%	349,224	+$70m+271,941	Added
Man Group PLC Quantitative · $62.7bn book	$75m	0.1%	293,849	+$40m+151,601	Added
Harris Associates LP Activist · $75.4bn book	$59m	0.1%	229,011	-$627m-2,576,961	Trimmed
Caxton Associates LLP Macro · $5.3bn book	$13m	0.2%	50,141	opened50,141	New
Winton Group Ltd Quantitative · $3.1bn book	$9.2m	0.3%	36,076	opened36,076	New

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

ExodusPoint Capital Management LP · Multi-strategy$12m held before
Brevan Howard Capital Management LP · Macro$2.0m held before
MFS Investment Management · Long-only$200k held before

Ownership through time

At least 18 of the 95 managers whose filings are on file listed MPC in Q2 2026, against 19 in Q2 2013. The same number as in Q1 2026: 2 started positions; 2 listed it again; 4 no longer listed it among the positions read, which can mean a holding below the listed range 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

Caxton Associates LLP$13m
Winton Group Ltd$9.2m

Largest increases, by shares

T. Rowe Price Associates Inc1,283,092 to 1,839,897 shares+$142m
Fidelity (FMR LLC)4,911,081 to 5,419,718 shares+$130m
AQR Capital Management LLC432,606 to 828,334 shares+$101m
Bridgewater Associates LP77,283 to 349,224 shares+$70m
Squarepoint Ops LLC369,453 to 554,045 shares+$47m

Largest decreases, by shares

Harris Associates LP2,805,972 to 229,011 shares-$659m
Wellington Management Group LLP5,637,187 to 3,252,153 shares-$610m
Invesco Ltd2,828,645 to 2,341,034 shares-$125m
Holocene Advisors LP414,134 to 123,764 shares-$74m
Two Sigma Investments LP1,524,286 to 1,239,241 shares-$73m

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Fidelity (FMR LLC)	Q2 2013	$1.4bn	$1.4bn
Wellington Management Group LLP	Q2 2013	$1.9bn	$831m
Invesco Ltd	Q2 2013	$691m	$599m
T. Rowe Price Associates Inc	Q1 2015	$621m	$470m
Two Sigma Investments LP	Q2 2013	$372m	$317m
AQR Capital Management LLC	Q2 2013	$441m	$212m
Squarepoint Ops LLC	Q4 2014	$142m	$142m
Millennium Management LLC	Q2 2013	$359m	$116m
Acadian Asset Management LLC	Q3 2013	$335m	$96m
AllianceBernstein LP	Q2 2013	$459m	$91m
Bridgewater Associates LP	Q2 2013	$89m	$89m
Man Group PLC	Q1 2018	$93m	$75m
Harris Associates LP	Q1 2025	$772m	$59m
Holocene Advisors LP	Q4 2018	$197m	$32m
Woodline Partners LP	Q3 2025	$16m	$16m
Elliott Investment Management LP	Q3 2016	$1.7bn	last listed Q2 2024
D. E. Shaw & Co.	Q2 2013	$989m	last listed Q3 2024
Viking Global Investors LP	Q2 2013	$823m	last listed Q1 2019
Arrowstreet Capital LP	Q2 2017	$443m	last listed Q1 2026
Soroban Capital Partners LP	Q2 2016	$436m	last listed Q1 2017
Steadfast Capital Management LP	Q2 2013	$412m	last listed Q2 2022
Baupost Group LLC	Q4 2020	$318m	last listed Q4 2020
Point72 Asset Management LP	Q1 2015	$296m	last listed Q2 2023
Third Point LLC	Q2 2013	$280m	last listed Q2 2019
MFS Investment Management	Q2 2013	$252m	last listed Q4 2019

What MPC 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 MPC →

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.

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