Jane Street’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 | $22M | Sell |
68,300
-46,800
| -41% | -$12.7M | ﹤0.01% | 1701 |
|
|
2025
Q4 | $25M | Buy |
115,100
+33,500
| +41% | +$7.03M | ﹤0.01% | 1426 |
|
|
2025
Q3 | $17.4M | Buy |
81,600
+68,700
| +533% | +$12.6M | ﹤0.01% | 1792 |
|
|
2025
Q2 | $2.2M | Sell |
12,900
-58,100
| -82% | -$8.37M | ﹤0.01% | 4264 |
|
|
2025
Q1 | $8.29M | Buy |
71,000
+21,400
| +43% | +$2.89M | ﹤0.01% | 2230 |
|
|
2024
Q4 | $6.75M | Buy |
49,600
+1,500
| +3% | +$201K | ﹤0.01% | 2292 |
|
|
2024
Q3 | $5.92M | Buy |
48,100
+18,800
| +64% | +$2.05M | ﹤0.01% | 2589 |
|
|
2024
Q2 | $3.13M | Buy |
29,300
+18,900
| +182% | +$1.91M | ﹤0.01% | 3742 |
|
|
2024
Q1 | $970K | Sell |
10,400
-80,400
| -89% | -$6.11M | ﹤0.01% | 5477 |
|
|
2023
Q4 | $6.88M | Buy |
90,800
+83,600
| +1,161% | +$5.23M | ﹤0.01% | 2416 |
|
|
2023
Q3 | $518K | Sell |
7,200
-40,300
| -85% | -$4.02M | ﹤0.01% | 6247 |
|
|
2023
Q2 | $5.6M | Buy |
47,500
+24,900
| +110% | +$2.44M | ﹤0.01% | 2574 |
|
|
2023
Q1 | $2.13M | Sell |
22,600
-300
| -1% | -$28.5K | ﹤0.01% | 3714 |
|
|
2022
Q4 | $1.95M | Sell |
22,900
-600
| -3% | -$49.2K | ﹤0.01% | 3910 |
|
|
2022
Q3 | $1.49M | Sell |
23,500
-700
| -3% | -$54.2K | ﹤0.01% | 4695 |
|
|
2022
Q2 | $1.73M | Sell |
24,200
-12,400
| -34% | -$967K | ﹤0.01% | 4430 |
|
|
2022
Q1 | $3.19M | Buy |
36,600
+2,100
| +6% | +$183K | ﹤0.01% | 3819 |
|
|
2021
Q4 | $3.18M | Sell |
34,500
-31,900
| -48% | -$2.92M | ﹤0.01% | 3587 |
|
|
2021
Q3 | $5.73M | Buy |
66,400
+8,200
| +14% | +$778K | ﹤0.01% | 2523 |
|
|
2021
Q2 | $6.17M | Buy |
58,200
+12,100
| +26% | +$1.31M | ﹤0.01% | 2327 |
|
|
2021
Q1 | $4.32M | Buy |
46,100
+28,400
| +160% | +$2.43M | ﹤0.01% | 2619 |
|
|
2020
Q4 | $1.21M | Sell |
17,700
-1,000
| -5% | -$56.1K | ﹤0.01% | 4357 |
|
|
2020
Q3 | $789K | Buy |
18,700
+7,300
| +64% | +$314K | ﹤0.01% | 4479 |
|
|
2020
Q2 | $512K | Buy |
+11,400
| New | +$432K | ﹤0.01% | 5050 |
|
|
2019
Q4 | – | Sell |
-5,300
| Closed | -$344K | – | 5507 |
|
|
2019
Q3 | $344K | Buy |
+5,300
| New | +$309K | ﹤0.01% | 4000 |
|
|
2019
Q2 | – | Sell |
-19,100
| Closed | -$919K | – | 5525 |
|
|
2019
Q1 | $919K | Sell |
19,100
-181,300
| -90% | -$8.15M | ﹤0.01% | 2911 |
|
|
2018
Q4 | $8.13M | Sell |
200,400
-56,800
| -22% | -$2.45M | 0.02% | 678 |
|
|
2018
Q3 | $11.5M | Buy |
257,200
+251,700
| +4,576% | +$11.7M | 0.02% | 535 |
|
|
2018
Q2 | $279K | Buy |
5,500
+200
| +4% | +$9.66K | ﹤0.01% | 4203 |
|
|
2018
Q1 | $249K | Buy |
+5,300
| New | +$269K | ﹤0.01% | 4228 |
|
|
2017
Q4 | – | Sell |
-11,900
| Closed | -$552K | – | 4979 |
|
|
2017
Q3 | $552K | Sell |
11,900
-10,500
| -47% | -$457K | ﹤0.01% | 2983 |
|
|
2017
Q2 | $1.01M | Sell |
22,400
-600
| -3% | -$26K | ﹤0.01% | 2197 |
|
|
2017
Q1 | $921K | Buy |
+23,000
| New | +$880K | ﹤0.01% | 2150 |
|
Other funds holding MTZ
PP
VCM
VPM
HCC
LPC
Jane Street's MTZ Position: Q1 2026 in Review
Jane Street increased its MasTec (MTZ) stake by 2,537% in Q1 2026, buying an estimated $24.5M and bringing the position to 93,956 shares worth $30.2M. The position accounts for ﹤0.01% of the portfolio, ranked #1435.
Jane Street first reported a position in MTZ in Q3 2015 and has held it in 40 quarters since. The position peaked at $41.6M in Q2 2025. 806 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.
- Jane Street held 93,956 shares of MasTec worth $30.2M as of Q1 2026.
- Jane Street bought 90,393 MasTec shares in Q1 2026, an estimated $24.5M.
- MasTec made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #1435 holding.
- Jane Street first reported a position in MasTec in Q3 2015 and has held it in 40 quarters since.
- Jane Street's MasTec position peaked at $41.6M in Q2 2025.
- 806 funds tracked by Wall St. Rank held MasTec as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.