Jim Simons’s Ambarella AMBA Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $10.3M | Buy |
+199,400
| New | +$12.4M | 0.02% | 959 |
|
|
2025
Q4 | – | Sell |
-242,600
| Closed | -$20M | – | 3209 |
|
|
2025
Q3 | $20M | Sell |
242,600
-108,249
| -31% | -$7.86M | 0.03% | 725 |
|
|
2025
Q2 | $23.2M | Sell |
350,849
-6,851
| -2% | -$363K | 0.03% | 642 |
|
|
2025
Q1 | $18M | Buy |
357,700
+314,700
| +732% | +$21.5M | 0.03% | 706 |
|
|
2024
Q4 | $3.13M | Buy |
+43,000
| New | +$2.74M | ﹤0.01% | 1745 |
|
|
2023
Q4 | – | Sell |
-100,300
| Closed | -$5.32M | – | 3711 |
|
|
2023
Q3 | $5.32M | Buy |
100,300
+59,500
| +146% | +$4.18M | 0.01% | 1267 |
|
|
2023
Q2 | $3.41M | Buy |
40,800
+14,300
| +54% | +$1.05M | ﹤0.01% | 1649 |
|
|
2023
Q1 | $2.05M | Buy |
+26,500
| New | +$2.27M | ﹤0.01% | 2015 |
|
|
2022
Q4 | – | Sell |
-318,478
| Closed | -$17.9M | – | 4092 |
|
|
2022
Q3 | $17.9M | Sell |
318,478
-161,622
| -34% | -$12M | 0.03% | 731 |
|
|
2022
Q2 | $31.4M | Sell |
480,100
-91,000
| -16% | -$7.33M | 0.04% | 516 |
|
|
2022
Q1 | $59.9M | Buy |
571,100
+319,900
| +127% | +$40.8M | 0.07% | 292 |
|
|
2021
Q4 | $51M | Sell |
251,200
-48,800
| -16% | -$9.05M | 0.06% | 331 |
|
|
2021
Q3 | $46.7M | Sell |
300,000
-208,033
| -41% | -$23.9M | 0.06% | 326 |
|
|
2021
Q2 | $54.2M | Sell |
508,033
-41,100
| -7% | -$4.07M | 0.07% | 300 |
|
|
2021
Q1 | $55.1M | Sell |
549,133
-292,000
| -35% | -$31.8M | 0.07% | 316 |
|
|
2020
Q4 | $77.2M | Sell |
841,133
-360,500
| -30% | -$25.2M | 0.08% | 244 |
|
|
2020
Q3 | $62.7M | Sell |
1,201,633
-375,000
| -24% | -$18.1M | 0.06% | 324 |
|
|
2020
Q2 | $72.2M | Buy |
1,576,633
+79,900
| +5% | +$4.12M | 0.06% | 339 |
|
|
2020
Q1 | $72.7M | Buy |
1,496,733
+412,100
| +38% | +$23.6M | 0.07% | 287 |
|
|
2019
Q4 | $65.7M | Buy |
1,084,633
+297,407
| +38% | +$16.5M | 0.05% | 415 |
|
|
2019
Q3 | $49.5M | Buy |
787,226
+407,226
| +107% | +$21.1M | 0.04% | 509 |
|
|
2019
Q2 | $16.8M | Buy |
380,000
+116,600
| +44% | +$5.22M | 0.01% | 1072 |
|
|
2019
Q1 | $11.4M | Buy |
+263,400
| New | +$10.4M | 0.01% | 1299 |
|
|
2018
Q2 | – | Sell |
-282,700
| Closed | -$13.8M | – | 3242 |
|
|
2018
Q1 | $13.8M | Buy |
282,700
+226,600
| +404% | +$11.8M | 0.02% | 1165 |
|
|
2017
Q4 | $3.3M | Buy |
+56,100
| New | +$3.12M | ﹤0.01% | 2064 |
|
|
2017
Q3 | – | Sell |
-23,200
| Closed | -$1.13M | – | 3180 |
|
|
2017
Q2 | $1.13M | Sell |
23,200
-70,300
| -75% | -$3.89M | ﹤0.01% | 2522 |
|
|
2017
Q1 | $5.12M | Buy |
+93,500
| New | +$5.05M | 0.01% | 1659 |
|
|
2016
Q2 | – | Sell |
-237,000
| Closed | -$10.6M | – | 3311 |
|
|
2016
Q1 | $10.6M | Buy |
237,000
+108,550
| +85% | +$4.49M | 0.02% | 1101 |
|
|
2015
Q4 | $7.16M | Sell |
128,450
-83,150
| -39% | -$4.69M | 0.02% | 1219 |
|
|
2015
Q3 | $12.2M | Buy |
+211,600
| New | +$20M | 0.03% | 808 |
|
Other funds holding AMBA
VPM
VCM
Jim Simons's AMBA Position: Q1 2026 in Review
Jim Simons opened a new position in Ambarella (AMBA) in Q1 2026: 199,400 shares worth $10.3M. The stake represents 0.02% of the portfolio and ranks #959 among its holdings. This is a return to the name: Jim Simons previously reported a position in AMBA as recently as Q3 2025.
Jim Simons first reported a position in AMBA in Q3 2015 and has held it in 30 quarters since. The position peaked at $77.2M in Q4 2020. 306 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.
- Jim Simons held 199,400 shares of Ambarella worth $10.3M as of Q1 2026.
- Ambarella was a new Jim Simons position in Q1 2026.
- Ambarella made up 0.02% of Jim Simons's portfolio in Q1 2026, its #959 holding.
- Jim Simons first reported a position in Ambarella in Q3 2015 and has held it in 30 quarters since.
- Jim Simons's Ambarella position peaked at $77.2M in Q4 2020.
- 306 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.
Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.