| Investor | Value | Of portfolio | Shares | Change | Quarter |
|---|---|---|---|---|---|
| Renaissance Technologies | $9.5M | 0.01% | 110.30K | −45% | Q2 2026 |
From each investor's quarterly 13F filing with the SEC: positions at the quarter's end, reported up to 45 days later. All investors
No member of Congress has disclosed a AMBA trade since 2025.
From House and Senate STOCK Act reports. Members disclose trades, not holdings, as value ranges up to 45 days later, so amounts are estimates and “last move” is a hint at who still holds it, not a position. All recent congress trades
| Date | Insider | Transaction | Shares | Value |
|---|---|---|---|---|
| Sep 24, 2026 | Paisley Christopher B.Director | Sale at price 70.76 per share. | 250 | $17.69K |
| Sep 17, 2026 | Young John AlexanderChief Financial Officer | Sale at price 67.28 per share. | 1.9K | $127.56K |
| Sep 7, 2026 | Hu Chenming CDirector | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Richardson David JeffreyDirector | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Hon Hsiao-WuenDirector | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Bryant Gregory M.Director | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Schwarting Elizabeth MDirector | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Breithaupt Chantelle YvetteDirector | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Sep 7, 2026 | Paisley Christopher B.Director | Stock Award(Grant) at price 0.00 per share. | 3.2K | — |
| Jul 8, 2026 | Chen Yun-LungOfficer | Sale at price 78.66 per share. | 6K | $468.66K |
| Jun 30, 2026 | Wang Feng MingChief Executive Officer | Sale at price 90.08 per share. | 16.3K | $1.46M |
| Jun 30, 2026 | Ju Chi-Hong JohnOfficer | Sale at price 88.84 per share. | 10K | $888.40K |
| Jun 25, 2026 | Paisley Christopher B.Director | Sale at price 62.01 per share. | 250 | $15.50K |
| Jun 16, 2026 | Wang Feng MingChief Executive Officer | Stock Gift at price 0.00 per share. | 10K | — |
| Jun 16, 2026 | Young John AlexanderChief Financial Officer | Sale at price 66.98 - 67.87 per share. | 5K | $339.95K |
| Jun 16, 2026 | Wang Feng MingChief Executive Officer | Sale at price 67.87 per share. | 6.2K | $421.06K |
| Jun 16, 2026 | Lee Chan WChief Operating Officer | Sale at price 67.87 per share. | 3K | $200.28K |
| Jun 16, 2026 | Ju Chi-Hong JohnOfficer | Sale at price 67.87 per share. | 2K | $136.89K |
| Jun 11, 2026 | Chen Yun-LungOfficer | Sale at price 67.06 per share. | 9.9K | $660.94K |
| May 25, 2026 | Young John AlexanderChief Financial Officer | Conversion of Exercise of derivative security at price 55.80 per share. | 400 | $22.32K |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -9.6 | -5.8 | -14.7 | 33.6 | 4.9 | 18.9 | 0.2 | -19.3 | 0.2 | -7.1 | −8.8% | ||
| 2025 | 5.5 | -19.9 | -18.1 | -4.6 | 9.7 | 25.5 | 0.0 | 24.8 | 0.0 | 3.3 | -13.0 | -4.5 | −2.6% |
| 2024 | -14.2 | 6.3 | -9.1 | -9.5 | 26.7 | -7.4 | -2.4 | 13.4 | -5.5 | -0.4 | 27.3 | 1.7 | +18.7% |
| 2023 | 9.3 | 5.0 | -17.9 | -19.9 | 16.7 | 15.7 | -0.3 | -25.5 | -14.7 | -15.2 | 30.5 | 4.4 | −25.5% |
| 2022 | -30.9 | -0.3 | -24.9 | -21.8 | 3.8 | -23.2 | 32.2 | -21.6 | -17.2 | -2.6 | 35.6 | 10.8 | −59.5% |
| 2021 | 2.8 | 19.2 | -10.8 | -2.9 | 3.0 | 6.2 | -7.6 | 5.2 | 50.4 | 19.3 | -3.4 | 13.0 | +121.0% |
| 2020 | -2.3 | 0.5 | -18.3 | 8.3 | 7.9 | -19.3 | -1.1 | 16.4 | -1.0 | 4.8 | 42.9 | 17.5 | +51.6% |
| 2019 | 8.6 | 6.2 | 7.0 | 16.0 | -24.4 | 16.4 | 13.2 | 11.9 | 12.5 | -16.2 | 4.0 | 10.6 | +73.1% |
| 2018 | -14.2 | -4.6 | 1.9 | -4.9 | 4.9 | -21.0 | 1.5 | -2.2 | 1.0 | -10.1 | 15.0 | -12.5 | −40.5% |
| 2017 | -8.4 | 18.8 | -7.2 | 2.8 | 4.1 | -17.1 | 3.1 | 8.7 | -9.9 | 15.2 | -3.8 | 8.3 | +8.5% |
| 2016 | -28.8 | 16.9 | -3.7 | -8.1 | 0.6 | 22.9 | 14.1 | 24.2 | 2.2 | -16.6 | 0.2 | -12.0 | −2.9% |
| 2015 | 9.0 | 3.8 | 31.9 | -3.4 | 23.3 | 13.8 | 12.8 | -17.5 | -39.6 | -14.4 | 27.0 | -11.3 | +9.9% |
| 2014 | -5.5 | 4.4 | -20.1 | -7.0 | 4.4 | 20.2 | -8.2 | 19.7 | 27.5 | 1.4 | 24.2 | -7.8 | +49.7% |
| 2013 | -10.7 | 0.0 | 57.2 | -12.5 | 18.0 | 4.1 | -1.4 | -13.6 | 36.1 | 5.3 | 20.7 | 36.7 | +203.9% |
| 2012 | 20.6 | 28.0 | +54.4% |
Ambarella, Inc. develops low-power system-on-a-chip, semiconductors, and software for edge and physical artificial intelligence, applications, and intelligent automation. The company's system-on-a-chip (SOC) integrates third generation CVflow technology with advanced video processing, image signal processing, audio processing, and system control functions on a single chip. It also offers central domain controllers, CVflow SoCs, AI neural processors, vision processor SoCs, high-definition radars, and serializer/deserializers, as well as licenses software modules. The company's solutions are used in automotive video recorders, electronic mirrors, front advanced driver assistance system camera, AI Telematics Systems, and cabin monitoring system and driver monitoring system cameras in automotive field; central domain controllers for autonomous vehicles in autonomy; enterprise and public class, and home security cameras in the field of IoT; and enterprise, home, public spaces, and consumer applications, as well as for video conferencing, access control, healthcare, medical, and virtual reality applications. It sells its solutions to original design manufacturers, original equipment manufacturers, automotive market, and Tier-1 suppliers through its direct sales force and distributors. The company operates in Taiwan, rest of the Asia Pacific, Europe, the United States, and rest of North America. Ambarella, Inc. was incorporated in 2004 and is headquartered in Santa Clara, California.
Buy / hold / sell counts