Peconic Partners’s MasTec MTZ Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $1.15B | Buy |
3,578,431
+1,978,431
| +124% | +$536M | 19.92% | 3 |
|
|
2025
Q4 | $348M | Buy |
1,600,000
+850,000
| +113% | +$178M | 8.27% | 3 |
|
|
2025
Q3 | $160M | Buy |
+750,000
| New | +$137M | 4.41% | 3 |
|
|
2024
Q3 | – | Sell |
-481,720
| Closed | -$51.5M | – | 10 |
|
|
2024
Q2 | $51.5M | Buy |
+481,720
| New | +$48.7M | 2.21% | 5 |
|
|
2023
Q4 | – | Sell |
-301,047
| Closed | -$21.7M | – | 10 |
|
|
2023
Q3 | $21.7M | Sell |
301,047
-348,953
| -54% | -$34.8M | 1.26% | 4 |
|
|
2023
Q2 | $76.7M | Buy |
+650,000
| New | +$63.7M | 3.7% | 4 |
|
|
2023
Q1 | – | Sell |
-234,300
| Closed | -$20M | – | 39 |
|
|
2022
Q4 | $20M | Buy |
+234,300
| New | +$19.2M | 1.29% | 6 |
|
|
2022
Q1 | – | Sell |
-1,419,139
| Closed | -$131M | – | 53 |
|
|
2021
Q4 | $131M | Buy |
1,419,139
+560,000
| +65% | +$51.2M | 10.53% | 4 |
|
|
2021
Q3 | $74.1M | Buy |
859,139
+582,618
| +211% | +$55.3M | 6.58% | 4 |
|
|
2021
Q2 | $29.3M | Sell |
276,521
-150,036
| -35% | -$16.3M | 2.94% | 5 |
|
|
2021
Q1 | $40M | Buy |
426,557
+2,217
| +0.5% | +$190K | 4.19% | 4 |
|
|
2020
Q4 | $28.9M | Buy |
424,340
+34,416
| +9% | +$1.93M | 3.47% | 5 |
|
|
2020
Q3 | $16.5M | Buy |
+389,924
| New | +$16.8M | 2.93% | 6 |
|
|
2019
Q4 | – | Sell |
-271,302
| Closed | -$17.6M | – | 76 |
|
|
2019
Q3 | $17.6M | Sell |
271,302
-4,143,568
| -94% | -$242M | 4.1% | 7 |
|
|
2019
Q2 | $227M | Buy |
4,414,870
+4,000
| +0.1% | +$198K | 44.78% | 1 |
|
|
2019
Q1 | $212M | Buy |
4,410,870
+28,200
| +0.6% | +$1.27M | 42.63% | 1 |
|
|
2018
Q4 | $178M | Buy |
4,382,670
+104,800
| +2% | +$4.51M | 43.5% | 1 |
|
|
2018
Q3 | $191M | Sell |
4,277,870
-191,314
| -4% | -$8.86M | 48.2% | 1 |
|
|
2018
Q2 | $227M | Sell |
4,469,184
-13,852
| -0.3% | -$669K | 41.62% | 1 |
|
|
2018
Q1 | $211M | Sell |
4,483,036
-150,000
| -3% | -$7.6M | 40.78% | 1 |
|
|
2017
Q4 | $227M | Sell |
4,633,036
-131,426
| -3% | -$5.86M | 32.59% | 1 |
|
|
2017
Q3 | $221M | Hold |
4,764,462
| – | – | 35.65% | 1 |
|
|
2017
Q2 | $215M | Sell |
4,764,462
-23,900
| -0.5% | -$1.03M | 34.65% | 1 |
|
|
2017
Q1 | $192M | Sell |
4,788,362
-584
| -0% | -$22.3K | 22.02% | 1 |
|
|
2016
Q4 | $183M | Sell |
4,788,946
-64,040
| -1% | -$2.17M | 24.21% | 1 |
|
|
2016
Q3 | $144M | Sell |
4,852,986
-17,320
| -0.4% | -$475K | 18.27% | 2 |
|
|
2016
Q2 | $109M | Sell |
4,870,306
-8,685
| -0.2% | -$193K | 13.5% | 3 |
|
|
2016
Q1 | $98.8M | Buy |
4,878,991
+250,000
| +5% | +$4.09M | 21.43% | 2 |
|
|
2015
Q4 | $87.8M | Buy |
4,628,991
+517,246
| +13% | +$9.19M | 29.08% | 1 |
|
|
2015
Q3 | $65.1M | Buy |
4,111,745
+1,469,577
| +56% | +$25.6M | 10.64% | 3 |
|
|
2015
Q2 | $52.5M | Buy |
2,642,168
+488,500
| +23% | +$9.13M | 8.49% | 4 |
|
|
2015
Q1 | $41.6M | Sell |
2,153,668
-17,706
| -0.8% | -$354K | 6.47% | 4 |
|
|
2014
Q4 | $49.1M | Buy |
2,171,374
+7,000
| +0.3% | +$173K | 10.66% | 3 |
|
|
2014
Q3 | $66.3M | Buy |
2,164,374
+151,999
| +8% | +$4.52M | 9.11% | 3 |
|
|
2014
Q2 | $62M | Sell |
2,012,375
-191,500
| -9% | -$7.22M | 7.04% | 3 |
|
|
2014
Q1 | $95.7M | Sell |
2,203,875
-68,900
| -3% | -$2.62M | 9.06% | 2 |
|
|
2013
Q4 | $74.4M | Buy |
2,272,775
+120,700
| +6% | +$3.82M | 7.75% | 3 |
|
|
2013
Q3 | $65.2M | Buy |
2,152,075
+21,900
| +1% | +$719K | 8.07% | 1 |
|
|
2013
Q2 | $70.1M | Buy |
+2,130,175
| New | +$64.2M | 9.28% | 2 |
|
Other funds holding MTZ
VCM
VPM
HCC
LPC
Peconic Partners's MTZ Position: Q1 2026 in Review
Peconic Partners increased its MasTec (MTZ) stake by 124% in Q1 2026, buying an estimated $536M and bringing the position to 3,578,431 shares worth $1.15B. The position accounts for 19.92% of the portfolio, ranked #3.
Peconic Partners first reported a position in MTZ in Q2 2013 and has held it in 39 quarters since. 805 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.
- Peconic Partners held 3,578,431 shares of MasTec worth $1.15B as of Q1 2026.
- Peconic Partners bought 1,978,431 MasTec shares in Q1 2026, an estimated $536M.
- MasTec made up 19.92% of Peconic Partners's portfolio in Q1 2026, its #3 holding.
- Peconic Partners first reported a position in MasTec in Q2 2013 and has held it in 39 quarters since.
- 805 funds tracked by Wall St. Rank held MasTec as of Q1 2026.
Based on Peconic Partners's 13F filing for Q1 2026, filed 15 May 2026.