Jane Street’s Monolithic Power Systems MPWR Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $248M | Buy |
179,293
+174,210
| +3,427% | +$262M | 0.02% | 497 |
|
|
2026
Q1 | $5.56M | Buy |
5,083
+596
| +13% | +$651K | ﹤0.01% | 3357 |
|
|
2025
Q4 | $4.07M | Sell |
4,487
-9,901
| -69% | -$9.53M | ﹤0.01% | 3554 |
|
|
2025
Q3 | $13.2M | Buy |
14,388
+9,316
| +184% | +$7.55M | ﹤0.01% | 2067 |
|
|
2025
Q2 | $3.71M | Buy |
5,072
+4,050
| +396% | +$2.58M | ﹤0.01% | 3428 |
|
|
2025
Q1 | $593K | Sell |
1,022
-15,078
| -94% | -$9.5M | ﹤0.01% | 6551 |
|
|
2024
Q4 | $9.53M | Sell |
16,100
-117,560
| -88% | -$85.1M | ﹤0.01% | 1929 |
|
|
2024
Q3 | $124M | Buy |
133,660
+88,901
| +199% | +$76.8M | 0.03% | 334 |
|
|
2024
Q2 | $36.8M | Buy |
44,759
+23,679
| +112% | +$17.1M | 0.01% | 862 |
|
|
2024
Q1 | $14.3M | Sell |
21,080
-39,244
| -65% | -$26.2M | ﹤0.01% | 1478 |
|
|
2023
Q4 | $38.1M | Buy |
60,324
+52,868
| +709% | +$27.6M | 0.01% | 825 |
|
|
2023
Q3 | $3.44M | Sell |
7,456
-14,836
| -67% | -$7.59M | ﹤0.01% | 3164 |
|
|
2023
Q2 | $12M | Sell |
22,292
-11,682
| -34% | -$5.55M | ﹤0.01% | 1717 |
|
|
2023
Q1 | $17M | Buy |
33,974
+26,598
| +361% | +$12.2M | 0.01% | 1121 |
|
|
2022
Q4 | $2.61M | Sell |
7,376
-14,999
| -67% | -$5.39M | ﹤0.01% | 3430 |
|
|
2022
Q3 | $8.13M | Buy |
22,375
+13,538
| +153% | +$6.02M | ﹤0.01% | 1932 |
|
|
2022
Q2 | $3.39M | Buy |
8,837
+5,474
| +163% | +$2.31M | ﹤0.01% | 3242 |
|
|
2022
Q1 | $1.63M | Sell |
3,363
-2,997
| -47% | -$1.31M | ﹤0.01% | 5132 |
|
|
2021
Q4 | $3.14M | Buy |
6,360
+1,753
| +38% | +$905K | ﹤0.01% | 3607 |
|
|
2021
Q3 | $2.23M | Buy |
+4,607
| New | +$2.1M | ﹤0.01% | 4255 |
|
|
2021
Q2 | – | Sell |
-4,236
| Closed | -$1.49M | – | 10180 |
|
|
2021
Q1 | $1.5M | Buy |
4,236
+2,831
| +201% | +$1.03M | ﹤0.01% | 4608 |
|
|
2020
Q4 | $514K | Sell |
1,405
-29,283
| -95% | -$9.38M | ﹤0.01% | 5703 |
|
|
2020
Q3 | $8.58M | Buy |
+30,688
| New | +$7.99M | 0.01% | 1345 |
|
|
2020
Q2 | – | Sell |
-3,657
| Closed | -$740K | – | 7391 |
|
|
2020
Q1 | $612K | Buy |
3,657
+1,461
| +67% | +$250K | ﹤0.01% | 3402 |
|
|
2019
Q4 | $391K | Sell |
2,196
-119
| -5% | -$19K | ﹤0.01% | 3975 |
|
|
2019
Q3 | $360K | Buy |
2,315
+564
| +32% | +$84.3K | ﹤0.01% | 3953 |
|
|
2019
Q2 | $238K | Sell |
1,751
-5,771
| -77% | -$785K | ﹤0.01% | 4498 |
|
|
2019
Q1 | $1.02M | Buy |
+7,522
| New | +$987K | ﹤0.01% | 2777 |
|
|
2018
Q4 | – | Sell |
-8,339
| Closed | -$1.05M | – | 5421 |
|
|
2018
Q3 | $1.05M | Sell |
8,339
-27,412
| -77% | -$3.82M | ﹤0.01% | 2717 |
|
|
2018
Q2 | $4.78M | Buy |
+35,751
| New | +$4.55M | 0.01% | 1080 |
|
|
2018
Q1 | – | Sell |
-4,532
| Closed | -$509K | – | 5180 |
|
|
2017
Q4 | $509K | Sell |
4,532
-4,092
| -47% | -$475K | ﹤0.01% | 3152 |
|
|
2017
Q3 | $919K | Buy |
+8,624
| New | +$876K | ﹤0.01% | 2386 |
|
|
2017
Q2 | – | Sell |
-6,580
| Closed | -$606K | – | 4676 |
|
|
2017
Q1 | $606K | Buy |
+6,580
| New | +$583K | ﹤0.01% | 2653 |
|
|
2016
Q1 | – | Sell |
-8,162
| Closed | -$520K | – | 4446 |
|
|
2015
Q4 | $520K | Buy |
+8,162
| New | +$507K | ﹤0.01% | 2439 |
|
|
2015
Q3 | – | Sell |
-4,541
| Closed | -$230K | – | 3949 |
|
|
2015
Q2 | $230K | Buy |
+4,541
| New | +$240K | ﹤0.01% | 3127 |
|
|
2014
Q4 | – | Sell |
-10,324
| Closed | -$455K | – | 2825 |
|
|
2014
Q3 | $455K | Buy |
+10,324
| New | +$454K | ﹤0.01% | 1520 |
|
|
2013
Q4 | – | Sell |
-15,905
| Closed | -$482K | – | 2694 |
|
|
2013
Q3 | $482K | Buy |
+15,905
| New | +$447K | 0.01% | 1736 |
|
Other funds holding MPWR
Jane Street's MPWR Position: Q2 2026 in Review
Jane Street increased its Monolithic Power Systems (MPWR) stake by 3,427% in Q2 2026, buying an estimated $262M and bringing the position to 179,293 shares worth $248M. The position accounts for 0.02% of the portfolio, ranked #497.
Jane Street first reported a position in MPWR in Q3 2013 and has held it in 37 quarters since. 1,242 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.
- Jane Street held 179,293 shares of Monolithic Power Systems worth $248M as of Q2 2026.
- Jane Street bought 174,210 Monolithic Power Systems shares in Q2 2026, an estimated $262M.
- Monolithic Power Systems made up 0.02% of Jane Street's portfolio in Q2 2026, its #497 holding.
- Jane Street first reported a position in Monolithic Power Systems in Q3 2013 and has held it in 37 quarters since.
- 1,242 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.
Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.