← Top Holdings

MTZMASTEC INC

CUSIP: 576323109

5

Guru Owners

$899.1M

Total Value Held

2.2M

Total Shares

Who owns MTZ? Full holder list and ownership history →

📊 Holdings Over Time

How superinvestor ownership has changed across quarters

$0$224.8M$449.5M$674.3M$899.1MQ4 '24Q1 '25Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26

Quarter-by-Quarter Activity

Q2 '265 owners · $899.1M
REDUCEDStephen Mandel$559.7M
REDUCEDPhilippe Laffont$215.2M
REDUCEDDaniel Loeb$120.7M
INCREASEDRay Dalio$2.9M
REDUCEDFPA Queens Road$633K
Q1 '265 owners · $796.8M
NEWStephen Mandel$492.6M
REDUCEDPhilippe Laffont$187.8M
REDUCEDDaniel Loeb$103.0M
INCREASEDRay Dalio$12.9M
REDUCEDFPA Queens Road$541K
Q4 '254 owners · $351.1M
INCREASEDDaniel Loeb$201.1M
NEWRay Dalio$2.3M
REDUCEDFPA Queens Road$372K
Q3 '252 owners · $154.7M
NEWDaniel Loeb$154.3M
Q2 '252 owners · $5.5M
NEWRay Dalio$5.2M
REDUCEDFPA Queens Road$310K
Q1 '251 owners · $224K
REDUCEDFPA Queens Road$224K

🏛️ Congressional Trades

MTZ: Held by 5 superinvestors · 7 congress member trades

$15,001 - $50,0002025-12-18
$1,001 - $15,0002025-10-31
$1,001 - $15,0002025-10-30
$1,001 - $15,0002025-10-30
$1,001 - $15,0002025-06-11
$1,001 - $15,0002025-02-03
$15,001 - $50,0002025-01-02