← Top Holdings

MUMICRON TECHNOLOGY INC

CUSIP: 595112103

🔥 Bought by 2 superinvestors this quarter

12

Guru Owners

$10.47B

Total Value Held

9.3M

Total Shares

Investor	Fund	Shares	Value▼	% of Portfolio	Rpt Price	Period
Leopold Aschenbrenner	Situational Awareness LP	4828786	$5.57B	27.54%	$1154.29	Q2 2026
Philippe Laffont	Coatue Management	3142269	$3.63B	7.46%	$1154.29	Q2 2026
David Tepper	Appaloosa Management	975000	$1.13B	14.57%	$1154.29	Q2 2026
Ray Dalio	Bridgewater Associates	116666	$134.7M	0.55%	$1154.29	Q2 2026
Whitney Tilson	T2 Partners Management	181420	$2.7M	5.40%	$14.98	Q3 2015
Sequoia Fund	Ruane, Cunniff & Goldfarb	2162	$2.5M	0.04%	$1154.29	Q2 2026
Lee Ainslie	Maverick Capital	1673	$1.9M	0.02%	$1154.29	Q2 2026
FPA Queens Road	Bragg Financial Advisors	1295	$1.5M	0.04%	$1154.29	Q2 2026
Dan Sundheim (Mine & Arao)	Mine & Arao Wealth Creation & Management	925	$1.1M	0.39%	$1154.29	Q2 2026
Mairs & Power	Mairs & Power	410	$473K	0.00%	$1154.29	Q2 2026
Wally Obermeyer	Obermeyer Wealth Partners	252	$291K	0.01%	$1154.29	Q2 2026
Bill Nygren	Harris Associates	180	$208K	0.00%	$1154.29	Q2 2026

Leopold Aschenbrenner

$5.57B

27.54%

Philippe Laffont

$3.63B

7.46%

$1.13B

14.57%

$134.7M

0.55%

$2.7M

5.40%

$2.5M

0.04%

$1.9M

0.02%

FPA Queens Road

$1.5M

0.04%

Dan Sundheim (Mine & Arao)

$1.1M

0.39%

$473K

0.00%

Wally Obermeyer

$291K

0.01%

$208K

0.00%

Who owns MU? Full holder list and ownership history →

📊 Holdings Over Time

How superinvestor ownership has changed across quarters

Quarter-by-Quarter Activity

Q2 '2611 owners · $10.47B

INCREASEDLeopold Aschenbrenner$5.57B

INCREASEDPhilippe Laffont$3.63B

INCREASEDDavid Tepper$1.13B

REDUCEDRay Dalio$134.7M

NEWLee Ainslie$1.9M

INCREASEDFPA Queens Road$1.5M

INCREASEDDan Sundheim (Mine & Arao)$1.1M

REDUCEDMairs & Power$473K

NEWWally Obermeyer$291K

NEWBill Nygren$208K

SOLDStanley Druckenmiller

Q1 '2611 owners · $2.14B

NEWLeopold Aschenbrenner$583.7M

REDUCEDDavid Tepper$562.5M

REDUCEDRay Dalio$498.6M

NEWLeopold Aschenbrenner$422.3M

NEWPhilippe Laffont$56.1M

NEWStanley Druckenmiller$7.9M

NEWLeopold Aschenbrenner$5.9M

NEWMairs & Power$234K

Q4 '256 owners · $754.6M

REDUCEDDavid Tepper$428.1M

INCREASEDRay Dalio$253.9M

REDUCEDDavid Tepper$71.4M

NEWFPA Queens Road$341K

NEWDan Sundheim (Mine & Arao)$285K

SOLDLeopold Aschenbrenner

SOLDDonald Smith & Co

Q3 '256 owners · $148.3M

REDUCEDDavid Tepper$83.7M

NEWLeopold Aschenbrenner$50.2M

NEWGuy Spier$13.4M

REDUCEDDonald Smith & Co$416K

NEWRay Dalio$284K

SOLDLee Ainslie

Q2 '254 owners · $269.1M

REDUCEDLee Ainslie$135.2M

INCREASEDDavid Tepper$101.7M

REDUCEDDonald Smith & Co$32.0M

NEWSequoia Fund$266K

Q1 '254 owners · $143.3M

INCREASEDLee Ainslie$70.3M

INCREASEDDavid Tepper$34.8M

REDUCEDDonald Smith & Co$31.3M

SOLDStanley Druckenmiller

🏛️ Congressional Trades

MU: Held by 12 superinvestors · 50 congress member trades

BUYDan NewhouseR

$1,001 - $15,0002026-07-10

BUYMichael RulliR

$1,001 - $15,0002026-06-25

SELLGilbert CisnerosD

$1,001 - $15,0002026-06-05

BUYJosh GottheimerD

$1,001 - $15,0002026-05-21

SELLGilbert CisnerosD

$1,001 - $15,0002026-05-15

BUYGilbert CisnerosD

$1,001 - $15,0002026-03-25

SELLDwight EvansD

$15,001 - $50,0002026-03-24

BUYGilbert CisnerosD

$1,001 - $15,0002026-02-24

SELLGilbert CisnerosD

$1,001 - $15,0002026-02-10

BUYCleo FieldsD

$100,001 - $250,0002026-02-03

SELLJohn BoozmanR

$1,001 - $15,0002026-01-26

SELLJohn BoozmanR

$1,001 - $15,0002026-01-08

$1,001 - $15,0002025-11-20

$1,001 - $15,0002025-11-13

$1,001 - $15,0002025-11-10

$1,001 - $15,0002025-11-05

$1,001 - $15,0002025-10-24

$1,001 - $15,0002025-10-23

$1,001 - $15,0002025-10-22

$1,001 - $15,0002025-10-03