Mastec MTZ Institutional Ownership

NYSE MTZ

$266.26 -5.60 (-2.06%)

At close: Aug 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

785 Institutions

Increased 425 54.1%

Unchanged 102 13.0%

Reduced 258 32.9%

Ownership Statistics

13F · as of 31 Mar, 2026

Institutional Ownership

74.38%

▼-3.33 pp QoQ

Shares Held by Institutions

57.98Mn

of 77.95Mn outstanding

▲+9.95% QoQ

Shares Outstanding

77.95Mn

19.97Mn held outside 13F filers

Institutional Investors

785

filed 13F for Mar 2026

▲+103 vs prior quarter

Net Shares Added (QoQ)

+5.25Mn

accumulated since last quarter

Value of Holdings

$16.25Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 31 Mar, 2026

Mastec Inc (NYSE:MTZ) showed up in the 13F filings of 785 institutional investors as of March 2026.

Collectively, these holders controlled 74.4% of Mastec's outstanding shares in March 2026, down from 77.7% in December 2025.
They increased total shares held in MTZ by 9.95% quarter over quarter, and investors in Mastec increased 48.96% from a year ago.
During the quarter, 425 of these 785 funds increased positions in MTZ, 258 reduced exposure, and 102 held steady.
Altogether, these fund groups held 57.98Mn shares in MTZ by March 2026, up by 5.25Mn shares quarter on quarter, and down 3.72Mn shares year over year.
BlackRock, Inc. leads ownership in MTZ with 7.31Mn shares as of March 31, 2026, equal to 9.38% of outstanding shares.
Leading buyers of Mastec shares for the quarter ending March 2026 were VANGUARD CAPITAL MANAGEMENT LLC (2.8Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.77Mn), PECONIC PARTNERS LLC (1.98Mn), LONE PINE CAPITAL LLC (1.53Mn), CANADA PENSION PLAN INVESTMENT BOARD (488.85K).
Top sellers of MTZ stock for the quarter ending March 2026 included VICTORY CAPITAL MANAGEMENT INC (1.04Mn), Electron Capital Partners, LLC (895.59K), COATUE MANAGEMENT LLC (772.22K), Third Point LLC (605.0K), JACOBS LEVY EQUITY MANAGEMENT, INC (596.91K).
Per Business Quant, the top 10 investors in MTZ for the quarter ending March 2026 include BlackRock, Inc. (7.31Mn), PECONIC PARTNERS LLC (3.58Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.8Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.77Mn), Hill City Capital, LP (2.15Mn), State Street Corp (1.87Mn), VICTORY CAPITAL MANAGEMENT INC (1.59Mn), LONE PINE CAPITAL LLC (1.53Mn), FIRST TRUST ADVISORS LP (1.41Mn), GEODE CAPITAL MANAGEMENT, LLC (1.37Mn).

Form 13F Holdings

785 Institutional Holders

Report period 31 Mar, 2026

Total shares held 57.98Mn

Of outstanding 74.38%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	7,309,609	9.38%	▲198,355	+2.79%	$2.35Bn
2	PECONIC PARTNERS LLC	0001050464	3,578,431	4.59%	▲1,978,431	+123.65%	$1.15Bn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,804,295	3.60%	▲2,804,295	0.00%	$902.25Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,770,038	3.55%	▲2,770,038	0.00%	$891.23Mn
5	Hill City Capital, LP	0001837343	2,155,000	2.76%	0	0.00%	$693.35Mn
6	State Street Corp	0000093751	1,869,788	2.40%	▲43,366	+2.37%	$601.59Mn
7	VICTORY CAPITAL MANAGEMENT INC	0001040188	1,592,523	2.04%	▼1,044,928	-39.62%	$512.38Mn
8	LONE PINE CAPITAL LLC	0001061165	1,531,050	1.96%	▲1,531,050	0.00%	$492.60Mn
9	FIRST TRUST ADVISORS LP	0001125816	1,411,584	1.81%	▲100,151	+7.64%	$454.16Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,371,909	1.76%	▲151,206	+12.39%	$441.49Mn
11	Bank Of America Corp /De/	0000070858	1,330,066	1.71%	▲75,100	+5.98%	$427.94Mn
12	Hood River Capital Management LLC	0001578177	1,295,385	1.66%	▼188,276	-12.69%	$416.78Mn
13	Invesco Ltd.	0000914208	1,225,757	1.57%	▼294,273	-19.36%	$394.38Mn
14	NORDEA INVESTMENT MANAGEMENT AB	0001218210	733,628	0.94%	▼416,641	-36.22%	$228.75Mn
15	DIMENSIONAL FUND ADVISORS LP	0000354204	731,650	0.94%	▼139,196	-15.98%	$235.33Mn
16	Electron Capital Partners, LLC	0001586986	713,013	0.91%	▼895,593	-55.68%	$229.40Mn
17	AQR CAPITAL MANAGEMENT LLC	0001167557	660,054	0.85%	▼70,925	-9.70%	$209.54Mn
18	Bank of New York Mellon Corp	0001390777	656,104	0.84%	▲19,745	+3.10%	$211.09Mn
19	CANADA PENSION PLAN INVESTMENT BOARD	0001283718	638,964	0.82%	▲488,849	+325.65%	$205.58Mn
20	FMR LLC	0000315066	627,901	0.81%	▼36,689	-5.52%	$202.02Mn

Showing 1 to 20 of 785 holders