Essex Investment Management Co Llc

13F Filings History

Latest 13F report
Q3 2025 - Nov 6, 2025
Value $
$653M
Signature - Title
David A Rozenson - Attorney-in-Fact
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by Essex Investment Management Co Llc. Form 13F is required to be filed within 45 days of the end of a calendar quarter. Essex Investment Management Co Llc reported 299 stock holdings with total value $653M as of Q3 2025. Top holdings included KTOS, STRL, AMSC, TSEM, and INSM.
Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Date Filed
Q3 2025 299 $653M +$87.9M -$90.1M -$2.25M KTOS, STRL, AMSC, TSEM, INSM 13F-HR 11/6/2025, 09:54 AM
Q2 2025 298 $550M +$61.6M -$90.9M -$29.3M KTOS, AMSC, STRL, DRS, AVPT 13F-HR 8/12/2025, 03:59 PM
Q1 2025 303 $479M +$51.3M -$75.9M -$24.5M HCI, KTOS, DRS, AAPL, NEE 13F-HR 5/7/2025, 04:46 PM
Q4 2024 307 $556M +$41.5M -$88.5M -$47M PRIM, AMSC, AAPL, KTOS, HCI 13F-HR 2/7/2025, 01:38 PM
Q3 2024 302 $574M +$68.2M -$83.9M -$15.7M AMSC, DRS, AAPL, HCI, NEE 13F-HR 10/10/2024, 05:15 PM
Q2 2024 302 $535M +$110M -$86.9M +$23M AMSC, AAPL, MSFT, DRS, NEE 13F-HR 8/12/2024, 02:00 PM
Q1 2024 300 $491M +$60.3M -$110M -$49.7M MSFT, AAPL, HCI, NEE, CRM 13F-HR 5/3/2024, 03:57 PM
Q4 2023 313 $502M +$45.6M -$213M -$168M STRL, AAPL, HCI, MSFT, CRM 13F-HR 2/7/2024, 06:26 PM
Q3 2023 411 $613M +$104M -$148M -$44.2M AAPL, STRL, MSFT, HCI, PRIM 13F-HR 11/9/2023, 02:24 PM
Q2 2023 424 $716M +$130M -$131M -$965K AAPL, STRL, MSFT, DGII, HCI 13F-HR 8/14/2023, 09:12 AM
Q1 2023 385 $688M +$111M -$49.8M +$61.2M AAPL, MSFT, STKL, STRL, CSTL 13F-HR 5/4/2023, 04:49 PM
Q4 2022 394 $642M +$81.9M -$46.1M +$35.8M AAPL, MSFT, DGII, STKL, CSTL 13F-HR 2/2/2023, 04:58 PM
Q3 2022 410 $623M +$72.8M -$33.3M +$39.4M AAPL, STKL, DGII, MSFT, CSTL 13F-HR 11/14/2022, 11:17 AM
Q2 2022 422 $619M +$85.9M -$54.1M +$31.8M AAPL, MSFT, GNRC, DGII, HCI 13F-HR 8/11/2022, 05:42 PM
Q1 2022 387 $800M +$95.3M -$56.5M +$38.8M AAPL, MSFT, ASPN, TNDM, NEM 13F-HR 5/9/2022, 02:37 PM
Q4 2021 401 $873M +$120M -$41.5M +$79M AAPL, MSFT, AMZN, ASPN, TNDM 13F-HR 2/10/2022, 03:17 PM
Q3 2021 416 $815M +$73.7M -$95.9M -$22.2M ASPN, MSFT, AMZN, AAPL, ALB 13F-HR 11/9/2021, 02:29 PM
Q2 2021 415 $860M +$129M -$155M -$25.8M AMZN, ASPN, MSFT, AAPL, RUN 13F-HR 8/12/2021, 11:48 AM
Q1 2021 441 $820M +$135M -$190M -$55.2M AMZN, AAPL, MSFT, RUN, COWN 13F-HR 5/12/2021, 04:54 PM
Q4 2020 474 $805M +$144M -$114M +$30.3M AMZN, RUN, AAPL, MSFT, PEP 13F-HR 2/12/2021, 03:52 PM
Q3 2020 472 $697M +$125M -$82.3M +$43.1M VSLR, AMZN, MSFT, AAPL, VRTX 13F-HR 11/10/2020, 05:54 PM
Q2 2020 415 $610M +$114M -$121M -$7.5M AMZN, MSFT, AAPL, NFLX, VRTX 13F-HR 8/4/2020, 04:07 PM
Q1 2020 385 $494M +$90.7M -$98.4M -$7.72M AMZN, MSFT, AAPL, VRTX, BABA 13F-HR 5/1/2020, 06:35 PM
Q4 2019 469 $813M +$191M -$63.3M +$127M DIS, AMZN, MSFT, BABA, AAPL 13F-HR 2/10/2020, 11:18 AM
Q3 2019 459 $692M +$144M -$61.2M +$82.9M DIS, MSFT, AMZN, HD, RTN 13F-HR 10/22/2019, 04:45 PM
Q2 2019 471 $729M +$173M -$85.1M +$87.6M IIPR, AMZN, DIS, MSFT, HD 13F-HR 8/15/2019, 10:47 AM
Q1 2019 477 $677M +$121M -$118M +$2.15M IIPR, PANW, AMZN, CGC, AEM 13F-HR 5/14/2019, 09:05 PM
Q4 2018 472 $637M AMZN, PANW, MSFT, HD, AEM New Holdings 2/7/2019, 12:56 PM
Q4 2018 472 $637M +$149M -$100M +$48.9M AMZN, PANW, MSFT, HD, AEM 13F-HR 2/6/2019, 10:38 AM
Q3 2018 397 $850M +$132M -$50.1M +$82M AMZN, PANW, BIIB, RTN, HD 13F-HR 10/16/2018, 10:22 AM
Q2 2018 393 $795M +$112M -$72.4M +$39.2M AMZN, PANW, RTN, HD, GOOG 13F-HR 7/17/2018, 04:18 PM
Q1 2018 367 $761M +$88.9M -$68.2M +$20.7M AMZN, MS, PANW, RTN, HD 13F-HR 4/26/2018, 03:41 PM
Q4 2017 355 $758M +$114M -$58.8M +$55.3M AMZN, MS, HD, PANW, GOOG 13F-HR 2/5/2018, 01:05 PM
Q3 2017 351 $735M +$113M -$61.8M +$50.8M AMZN, CELG, AAPL, MS, BABA 13F-HR 10/30/2017, 04:07 PM
Q2 2017 340 $699M +$125M -$20.1M +$105M AMZN, AAPL, CELG, MS, PANW 13F-HR 7/28/2017, 04:41 PM
Q1 2017 345 $637M +$121M -$80.9M +$40.1M AMZN, AAPL, CELG, MS, CYBR 13F-HR 4/27/2017, 02:30 PM
Q4 2016 339 $607M +$131M -$67.8M +$62.7M AMZN, AAPL, CELG, MS, CYBR 13F-HR 2/8/2017, 06:55 AM
Q3 2016 330 $620M +$139M -$103M +$35.6M AMZN, AAPL, PANW, CELG, GOOG 13F-HR 11/1/2016, 02:36 PM
Q2 2016 314 $601M +$117M -$56.1M +$60.7M AMZN, AEM, BMY, GOLD, CYBR 13F-HR 7/27/2016, 12:09 PM
Q1 2016 312 $584M +$88.3M -$46.6M +$41.7M AMZN, FSLR, BMY, AEM, PANW 13F-HR 5/9/2016, 11:59 AM
Q4 2015 309 $640M +$123M -$62.8M +$60.1M AMZN, PANW, FSLR, BMY, META 13F-HR 1/26/2016, 01:03 PM
Q3 2015 317 $609M +$113M -$39.8M +$73.4M PANW, AMZN, JBLU, GILD, META 13F-HR 11/4/2015, 02:40 PM
Q2 2015 310 $662M +$120M -$68.3M +$51.9M PANW, AAPL, BMY, DIS, GILD 13F-HR 7/28/2015, 04:53 PM
Q1 2015 315 $715M +$128M -$71.4M +$56.2M PANW, WT, AAPL, BMY, GILD 13F-HR 5/6/2015, 06:18 AM
Q4 2014 332 $687M +$96.6M -$56M +$40.6M GILD, CELG, JBLU, PANW, AAPL 13F-HR 1/27/2015, 10:25 AM
Q3 2014 355 $653M +$134M -$61.8M +$72.7M GILD, CELG, META, SLB, PANW 13F-HR 10/29/2014, 08:44 AM
Q2 2014 354 $679M +$173M -$80.9M +$92.1M GILD, CELG, AAPL, SLB, HAL 13F-HR 7/23/2014, 12:53 PM
Q1 2014 344 $687M +$122M -$83.7M +$38.5M GILD, YHOO, GOOGLXXXX, CELG, AAPL 13F-HR 4/28/2014, 10:29 AM
Q4 2013 360 $707M GILD, GOOGLXXXX, CELG, AAPL, WT 13F-HR 1/28/2014, 09:05 AM