What ARK Investment Management LLC changed, 2016 to 2026
39 quarterly 13F filings, from Q4 2016 to Q2 2026, each read from the filing itself. A quarter is compared only with the quarter before it, so a quarter with no filing is a gap in the record, not a sale.
Reported book
$15.4bn
$275m at Q4 2016
Positions
191
102 at Q4 2016
Top ten weight
39%
49% at Q4 2016
Typical quarterly turnover
about 8%
Estimated from share changes
- Q4 2016: $275m
- Q1 2017: $347m
- Q2 2017: $514m
- Q3 2017: $819m
- Q4 2017: $1.3bn
- Q1 2018: $2.0bn
- Q2 2018: $2.7bn
- Q3 2018: $3.3bn
- Q4 2018: $2.5bn
- Q1 2019: $3.5bn
- Q2 2019: $4.0bn
- Q3 2019: $4.6bn
- Q4 2019: $4.0bn
- Q1 2020: $4.0bn
- Q2 2020: $9.3bn
- Q3 2020: $16.9bn
- Q4 2020: $37.6bn
- Q1 2021: $50.3bn
- Q2 2021: $53.7bn
- Q3 2021: $41.6bn
- Q4 2021: $33.1bn
- Q1 2022: $24.0bn
- Q2 2022: $16.9bn
- Q3 2022: $14.3bn
- Q4 2022: $11.5bn
- Q1 2023: $14.6bn
- Q2 2023: $15.1bn
- Q3 2023: $13.1bn
- Q4 2023: $16.9bn
- Q1 2024: $14.4bn
- Q2 2024: $11.3bn
- Q3 2024: $10.9bn
- Q4 2024: $12.0bn
- Q1 2025: $10.0bn
- Q2 2025: $13.6bn
- Q3 2025: $16.8bn
- Q4 2025: $15.1bn
- Q1 2026: $12.9bn
- Q2 2026: $15.4bn
- Q4 2016: 49%
- Q1 2017: 44%
- Q2 2017: 39%
- Q3 2017: 34%
- Q4 2017: 34%
- Q1 2018: 37%
- Q2 2018: 39%
- Q3 2018: 40%
- Q4 2018: 45%
- Q1 2019: 48%
- Q2 2019: 50%
- Q3 2019: 44%
- Q4 2019: 45%
- Q1 2020: 48%
- Q2 2020: 48%
- Q3 2020: 43%
- Q4 2020: 37%
- Q1 2021: 35%
- Q2 2021: 36%
- Q3 2021: 38%
- Q4 2021: 40%
- Q1 2022: 46%
- Q2 2022: 46%
- Q3 2022: 44%
- Q4 2022: 46%
- Q1 2023: 52%
- Q2 2023: 49%
- Q3 2023: 48%
- Q4 2023: 49%
- Q1 2024: 47%
- Q2 2024: 49%
- Q3 2024: 49%
- Q4 2024: 51%
- Q1 2025: 48%
- Q2 2025: 49%
- Q3 2025: 46%
- Q4 2025: 42%
- Q1 2026: 40%
- Q2 2026: 39%
The positions that defined it
Every position that was ever among the 25 largest: when it first appeared, when it was largest, and where it stands in Q2 2026. The line is its reported value each quarter.
| Position | Value over time | First listed | Largest | Q2 2026 |
|---|---|---|---|---|
| Tesla MTRS Inc(TSLA) | Q3 2017 | $3.9bnQ1 2021 | $1.2bn | |
| Advanced Micro Devices Inc(AMD) | Q3 2018 | $823mQ2 2026 | $823m | |
| Space Exploration Technologies Corp(SPCX) | Q2 2026 | $765mQ2 2026 | $765m | |
| Tempus AI Inc(TEM) | Q2 2024 | $581mQ2 2026 | $581m | |
| Robinhood Markets Inc(HOOD) | Q3 2021 | $729mQ2 2025 | $525m | |
| Crispr Therapeutics AG(CRSP) | Q3 2017 | $1.6bnQ4 2020 | $516m | |
| Shopify Inc(SHOP) | Q3 2017 | $1.8bnQ2 2021 | $475m | |
| Twist Bioscience Corp(TWST) | Q2 2019 | $830mQ4 2020 | $468m | |
| 10X Genomics Inc(TXG) | Q2 2020 | $842mQ2 2021 | $384m | |
| Amazon Com Inc(AMZN) | Q3 2017 | $379mQ2 2026 | $379m | |
| Palantir Technologies Inc(PLTR) | Q4 2020 | $895mQ3 2021 | $375m | |
| Alphabet Inc-cl C(GOOG) | Q3 2017 | $369mQ2 2026 | $369m | |
| Teladoc Inc(TDOC) | Q3 2017 | $2.7bnQ2 2021 | Soldlast listed Q3 2024 | |
| Unity Software Inc(U) | Q3 2020 | $1.5bnQ3 2021 | Soldlast listed Q4 2025 | |
| Twilio Inc(TWLO) | Q3 2017 | $1.5bnQ2 2021 | Soldlast listed Q2 2024 | |
| Zoom Video Communications Inc(ZM) | Q4 2020 | $1.4bnQ2 2021 | Soldlast listed Q3 2024 | |
| Exact Sciences Corp(EXAS) | Q3 2020 | $1.3bnQ2 2021 | Soldlast listed Q4 2025 | |
| UiPath Inc(PATH) | Q2 2021 | $1.3bnQ3 2021 | Soldlast listed Q1 2025 | |
| Invitae Corp | Q3 2017 | $1.2bnQ3 2020 | Soldlast listed Q4 2023 | |
| Twitter Inc | Q3 2017 | $854mQ2 2021 | Soldlast listed Q3 2022 |
Quarter by quarter
Q3 2018: $3.3bn across 202 positions
Against Q2 2018: 19 new, 100 added to, 72 trimmed, 17 sold out, across all 202 positions.
Turnover about 11% of the book, estimated from share changes at quarter-end prices.
Largest additions
- Invitae Corp+$89m
- Tencent Holdings Ltd-uns ADR (TCEHY)+$55m
- Tesla MTRS Inc (TSLA)+$45m
- Intellia Therapeutics Inc (NTLA)+$41m
- Baidu Inc (BIDU)+$38m
- Crispr Therapeutics AG (CRSP)+$37m
- Zillow Group Inc - C (Z)+$36m
- Stratasys LTD (SSYS)+$29m
Largest reductions
- Athenahealth Inc-$87m
- Redfin Corp-$30m
- Apple Inc (AAPL)-$18m
- Microsoft Corp (MSFT)-$15m
- Amazon Com Inc (AMZN)-$11m
- Salesforce Com Inc (CRM)-$10m
- Alibaba Group HLDG LTD (BABA)-$10m
- 2u Inc-$5.7m
Opened
Nothing new among the largest positions.
Sold out
- Facebook Inc (META)was $13m
- Snap Inc - A (SNAP)was $3.3m
- Five Prime Therapeutics Incwas $2.9m
- Foundation Medicine Incwas $2.7m
- Gilead Sciences Inc (GILD)was $2.1m
- Alnylam Pharmaceuticals Inc (ALNY)was $1.9m
- Conformis Incwas $1.4m
- Fanuc Corp-unsp ADR (FANUY)was $734k
Largest positions, Q3 2018
The largest 25 of 202 reported positions.
| Position | Value | Weight | On the quarter |
|---|---|---|---|
| Tesla MTRS Inc (TSLA) | $198m | 6.0% | Added |
| Intellia Therapeutics Inc (NTLA) | $165m | 5.0% | Added |
| Stratasys LTD (SSYS) | $160m | 4.8% | Added |
| Invitae Corp | $153m | 4.6% | Added |
| Baidu Inc (BIDU) | $139m | 4.2% | Added |
| Twitter Inc | $117m | 3.5% | Added |
| Tencent Holdings Ltd-uns ADR (TCEHY) | $111m | 3.4% | Added |
| Square Inc (XYZ) | $102m | 3.1% | Trimmed |
| Illumina Inc (ILMN) | $99m | 3.0% | Trimmed |
| Nvidia Corp (NVDA) | $90m | 2.7% | Added |
| Editas Medicine Inc (EDIT) | $89m | 2.7% | Added |
| Jd.com Inc-adr (JD) | $88m | 2.7% | Added |
| Netflix Inc (NFLX) | $77m | 2.3% | Added |
| Amazon Com Inc (AMZN) | $76m | 2.3% | Trimmed |
| Lendingclub Corp | $70m | 2.1% | Added |
| Crispr Therapeutics AG (CRSP) | $64m | 1.9% | Added |
| Teradyne Inc (TER) | $64m | 1.9% | Added |
| Nanostring Technologies Inc | $61m | 1.9% | Added |
| Apple Inc (AAPL) | $60m | 1.8% | Trimmed |
| Red Hat Inc | $59m | 1.8% | Added |
| Medidata Solutions Inc | $59m | 1.8% | Added |
| Bluebird Bio Inc | $58m | 1.8% | Added |
| Aptiv PLC | $51m | 1.6% | Added |
| Xilinx Inc | $51m | 1.5% | Trimmed |
| Spotify Technology SA (SPOT) | $50m | 1.5% | Added |
The books most like this one
Among the managers whose filings are on file, at Q2 2026. Overlap is the share of the two books that is the same: for every stock both list, the smaller of its two weights, added up. Two books can overlap because both own the largest companies; it says nothing about whether the managers agree.
| Manager | Overlap | Stocks in both | Overlap over time | |
|---|---|---|---|---|
| Baillie Gifford & Co | 23% | 58 | Compare | |
| T. Rowe Price Associates Inc | at least 18% | 55 | Compare | |
| Coatue Management LLC | 17% | 20 | Compare | |
| Invesco Ltd | at least 17% | 47 | Compare | |
| Fidelity (FMR LLC) | at least 17% | 56 | Compare | |
| Capital World Investors | at least 17% | 56 | Compare | |
| Janus Henderson Group Ltd | at least 16% | 42 | Compare | |
| Maverick Capital Ltd | 16% | 17 | Compare |
“At least” where either manager has more positions than are read each quarter: a stock both hold below that range is not counted.
The filings behind it
Every quarter above is one 13F holdings report, with any amendment the filer made to it applied in the order it was filed. Where the reporting entity changed, each quarter keeps the filer that actually reported it.
| Quarter | Filer | Book | Amended | Filing |
|---|---|---|---|---|
| Q2 2026 | ARK Investment Management LLC | $15.4bn | 13F-HR | |
| Q1 2026 | ARK Investment Management LLC | $12.9bn | 13F-HR | |
| Q4 2025 | ARK Investment Management LLC | $15.1bn | 13F-HR | |
| Q3 2025 | ARK Investment Management LLC | $16.8bn | 13F-HR | |
| Q2 2025 | ARK Investment Management LLC | $13.6bn | 13F-HR | |
| Q1 2025 | ARK Investment Management LLC | $10.0bn | 13F-HR | |
| Q4 2024 | ARK Investment Management LLC | $12.0bn | 13F-HR | |
| Q3 2024 | ARK Investment Management LLC | $10.9bn | 13F-HR | |
| Q2 2024 | ARK Investment Management LLC | $11.3bn | 13F-HR | |
| Q1 2024 | ARK Investment Management LLC | $14.4bn | 13F-HR | |
| Q4 2023 | ARK Investment Management LLC | $16.9bn | 13F-HR | |
| Q3 2023 | ARK Investment Management LLC | $13.1bn | 13F-HR | |
| Q2 2023 | ARK Investment Management LLC | $15.1bn | 13F-HR | |
| Q1 2023 | ARK Investment Management LLC | $14.6bn | 13F-HR | |
| Q4 2022 | ARK Investment Management LLC | $11.5bn | 13F-HR | |
| Q3 2022 | ARK Investment Management LLC | $14.3bn | 13F-HR | |
| Q2 2022 | ARK Investment Management LLC | $16.9bn | 13F-HR | |
| Q1 2022 | ARK Investment Management LLC | $24.0bn | 13F-HR | |
| Q4 2021 | ARK Investment Management LLC | $33.1bn | 13F-HR | |
| Q3 2021 | ARK Investment Management LLC | $41.6bn | 13F-HR | |
| Q2 2021 | ARK Investment Management LLC | $53.7bn | 13F-HR | |
| Q1 2021 | ARK Investment Management LLC | $50.3bn | 13F-HR | |
| Q4 2020 | ARK Investment Management LLC | $37.6bn | 13F-HR | |
| Q3 2020 | ARK Investment Management LLC | $16.9bn | 13F-HR | |
| Q2 2020 | ARK Investment Management LLC | $9.3bn | 13F-HR | |
| Q1 2020 | ARK Investment Management LLC | $4.0bn | 13F-HR | |
| Q4 2019 | ARK Investment Management LLC | $4.0bn | 13F-HR | |
| Q3 2019 | ARK Investment Management LLC | $4.6bn | 13F-HR | |
| Q2 2019 | ARK Investment Management LLC | $4.0bn | 13F-HR | |
| Q1 2019 | ARK Investment Management LLC | $3.5bn | 13F-HR | |
| Q4 2018 | ARK Investment Management LLC | $2.5bn | 13F-HR | |
| Q3 2018 | ARK Investment Management LLC | $3.3bn | 13F-HR | |
| Q2 2018 | ARK Investment Management LLC | $2.7bn | 13F-HR | |
| Q1 2018 | ARK Investment Management LLC | $2.0bn | 13F-HR | |
| Q4 2017 | ARK Investment Management LLC | $1.3bn | 13F-HR | |
| Q3 2017 | ARK Investment Management LLC | $819m | 13F-HR | |
| Q2 2017 | ARK Investment Management LLC | $514m | 13F-HR | |
| Q1 2017 | ARK Investment Management LLC | $347m | 13F-HR | |
| Q4 2016 | ARK Investment Management LLC | $275m | 13F-HR |
Reading this record
A 13F lists US-listed long equity and options at the quarter end, filed up to 45 days later. It shows what was held, not when it was bought or at what price, and nothing short. Where a quarter lists only the largest positions, a name missing from it may still be held below that range; the counts of what was opened and sold always cover the whole filing.
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