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MTZ in the 13F filings

Mastec Inc · CUSIP 576323109

Sector · Industrials
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
35
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 13 listed it in both
Shares listed
8,372,198
combined, among listed positions
Reported value
$1.8bn
combined, at the quarter end

Among the 92 comparable managers: 18 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +648,571.

Managers listing MTZ in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

35 of 35 holders

ActionFiling
Invesco Ltd1,520,030$330munder 0.1%Trimmed-144,37119 Feb 2026 (the filing on sec.gov)
Third Point LLC925,000$201m2.76%Added+200,00017 Feb 2026 (the filing on sec.gov)
Millennium Management LLC732,273$159m0.07%Trimmed-101,12917 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC730,979$159m0.08%Trimmed-169,50517 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP720,771$157m0.18%Added+62,57017 Feb 2026 (the filing on sec.gov)
Coatue Management LLC677,909$147m0.37%Newnew15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)664,590$144munder 0.1%Added+198,98617 Feb 2026 (the filing on sec.gov)
Freestone Grove Partners LP455,617$99m0.72%Trimmed-222,68817 Feb 2026 (the filing on sec.gov)
Holocene Advisors LP408,746$89m0.19%Newnew17 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.238,882$52munder 0.1%Added+48,01417 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC199,496$43m0.13%Added+4,34713 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP153,669$33munder 0.1%Trimmed-32,35513 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP129,063$28munder 0.1%Added+3,47717 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC128,131$28munder 0.1%Trimmed-291,17217 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC114,681$25munder 0.1%Trimmed-16,99013 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP102,403$22munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP96,304$21munder 0.1%Added+86,21617 Feb 2026 (the filing on sec.gov)
Moore Capital Management LP64,954$14m0.20%Trimmed-7,43917 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc54,783$12munder 0.1%Added+3,63517 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC46,240$10munder 0.1%Trimmed-24,28413 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP39,500$8.6munder 0.1%Added+17,80017 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd27,855$6.1munder 0.1%Trimmed-3217 Feb 2026 (the filing on sec.gov)
PDT Partners LLC25,533$5.5m0.36%Held017 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC21,267$4.6munder 0.1%Trimmed-40,71717 Feb 2026 (the filing on sec.gov)
Man Group PLC20,654$4.5munder 0.1%Trimmed-5,78717 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
10 in Q3 2024 to 17 in Q2 2026

Tracked managers listing it, at least.

0102030201420182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MTZ by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20132$108mn.a.n.a.
Q3 20134$27mn.a.n.a.
Q4 20134$130mn.a.n.a.
Q1 20141$128mn.a.n.a.
Q2 20144$46mn.a.n.a.
Q3 20142$31mn.a.n.a.
Q4 20142$16mn.a.n.a.
Q1 20151$3.7mn.a.n.a.
Q2 20152$66mn.a.n.a.
Q3 20151$43mn.a.n.a.
Q3 20161$12mn.a.n.a.
Q4 20165$26mn.a.n.a.
Q1 20173$16mn.a.n.a.
Q2 20171$15mn.a.n.a.
Q3 20172$39mn.a.n.a.
Q4 20175$105mn.a.n.a.
Q1 20183$27mn.a.n.a.
Q2 20182$56mn.a.n.a.
Q3 20184$113mn.a.n.a.
Q4 20184$24mn.a.n.a.
Q1 20194$17mn.a.n.a.
Q2 20194$12mn.a.n.a.
Q3 20199$81mn.a.n.a.
Q4 20195$87mn.a.n.a.
Q1 20204$47mn.a.n.a.
Q2 20204$62mn.a.n.a.
Q3 20207$49mn.a.n.a.
Q4 20205$16mn.a.n.a.
Q1 20215$47mn.a.n.a.
Q2 202110$632mn.a.n.a.
Q3 20216$49mn.a.n.a.
Q4 20214$56mn.a.n.a.
Q1 20223$75mn.a.n.a.
Q2 20223$73mn.a.n.a.
Q3 20224$105mn.a.n.a.
Q4 20224$91mn.a.n.a.
Q1 20235$123mn.a.n.a.
Q2 20237$545mn.a.n.a.
Q3 20236$315mn.a.n.a.
Q4 20236$510m51
Q1 202410$637m65
Q2 20249$1.0bn72
Q3 202410$792m54
Q4 202414$1.1bn87
Q1 202512$575m67
Q2 202515$1.2bn123
Q3 202514$1.3bn68
Q4 202513$1.4bn1819
Q1 202622$2.1bn1819
Q2 202617$2.0bn1523

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MTZ and KLAC →MTZ and GE →MTZ and LRCX →Choose a stock to compare with MTZ →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MTZ, latest filings →Back to the 13F Explorer →