MasTec
811 hedge funds and large institutions have $18.6B invested in MasTec in 2026 Q1 according to their latest regulatory filings, with 185 funds opening new positions, 256 increasing their positions, 262 reducing their positions, and 63 closing their positions.
194% more first-time investments, than exits
New positions opened: 185 | Existing positions closed: 63
56% more funds holding in top 10
Funds holding in top 10: 18 → 28 (+10)
46% more capital invested
Capital invested by funds: $12.7B → $18.6B (+$5.89B)
27% more call options, than puts
Call options by funds: $225M | Put options by funds: $177M
17% more funds holding
Funds holding: 695 → 811 (+116)
0.74% less ownership
Funds ownership: 74.3% → 73.56% (-0.74%)
2% less repeat investments, than reductions
Existing positions increased: 256 | Existing positions reduced: 262
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PP
Peconic Partners
New York
|
+$536M |
| 2 |
LPC
Lone Pine Capital
Greenwich,
Connecticut
|
+$415M |
| 3 |
Canada Pension Plan Investment Board
Toronto Ontario,
Ontario, Canada
|
+$132M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$70M |
| 5 |
Westfield Capital Management
Boston,
Massachusetts
|
+$67.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
-$283M |
| 2 |
TP
Third Point
New York
|
-$164M |
| 3 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$162M |
| 4 |
Nordea Investment Management
Stockholm,
Sweden
|
-$113M |
| 5 |
MIM
Merewether Investment Management
Dallas,
Texas
|
-$93.7M |
MTZ Hedge Fund Activity: Q1 2026 in Review
811 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in MasTec (MTZ) for Q1 2026, worth a combined $18.6B — up 46% from $12.7B a quarter earlier.
Buyers outnumbered sellers: 185 funds opened new MTZ positions and 63 closed out — a net gain of 122 holders — while 256 added to existing stakes and 262 trimmed.
The largest buyer was Peconic Partners, adding an estimated $536M. The largest seller was Victory Capital Management, cutting an estimated $283M.
- 811 institutional investors held MasTec (MTZ) as of Q1 2026, up from 695 in Q4 2025.
- Funds reported $18.6B of MasTec stock for Q1 2026, up 46% quarter-over-quarter.
- 185 funds opened new MasTec positions in Q1 2026 and 63 closed out, a net change of +122 holders.
- The largest MasTec buyer in Q1 2026 was Peconic Partners, an estimated $536M added.
- The largest MasTec seller in Q1 2026 was Victory Capital Management, an estimated $283M sold.
Based on aggregated 13F filings for Q1 2026.