ARK Investment Management LLC and T. Rowe Price Associates Inc: where the books meet
At Q2 2026, at least 18% of the two 13F books was the same, across 55 stocks both listed, against 13% at Q4 2016. Overlap is the smaller of each shared stock’s two weights, added up: the part of one book that could be swapped for the other’s without a trade.
- Q4 2016: 13%, 32 in both
- Q1 2017: 14%, 36 in both
- Q2 2017: 15%, 41 in both
- Q3 2017: 15%, 40 in both
- Q4 2017: 15%, 48 in both
- Q1 2018: 13%, 50 in both
- Q2 2018: 12%, 52 in both
- Q3 2018: 11%, 53 in both
- Q4 2018: 8.6%, 51 in both
- Q1 2019: 7.0%, 49 in both
- Q2 2019: 6.7%, 47 in both
- Q3 2019: 5.8%, 49 in both
- Q4 2019: 7.2%, 47 in both
- Q1 2020: 6.3%, 52 in both
- Q2 2020: 7.3%, 57 in both
- Q3 2020: 9.0%, 60 in both
- Q4 2020: 11%, 71 in both
- Q1 2021: 10%, 78 in both
- Q2 2021: 9.1%, 74 in both
- Q3 2021: 8.0%, 69 in both
- Q4 2021: 6.5%, 79 in both
- Q1 2022: 5.5%, 72 in both
- Q2 2022: 5.4%, 70 in both
- Q3 2022: 6.4%, 45 in both
- Q4 2022: 4.2%, 47 in both
- Q1 2023: 5.0%, 49 in both
- Q2 2023: 5.9%, 51 in both
- Q3 2023: 6.4%, 51 in both
- Q4 2023: 5.5%, 49 in both
- Q1 2024: 6.2%, 51 in both
- Q2 2024: 7.5%, 52 in both
- Q3 2024: 8.6%, 55 in both
- Q4 2024: 10.0%, 57 in both
- Q1 2025: 11%, 54 in both
- Q2 2025: 11%, 58 in both
- Q3 2025: 12%, 58 in both
- Q4 2025: 13%, 54 in both
- Q1 2026: 14%, 50 in both
- Q2 2026: 18%, 55 in both
Only quarters both managers filed. Where either filing has more positions than are read each quarter, a stock both hold below that range is not counted, so the figure is a floor.
What the overlap is made of, Q2 2026
Stocks both listed, by the smaller of the two weights. A weight is the stock’s share of that manager’s reported book, which says how large the position is, not how strongly it is held.
| Stock | ARK Investment Management LLC | T. Rowe Price Associates Inc |
|---|---|---|
| Amazon Com Inc(AMZN) | 2.5%Added | 2.6%Trimmed |
| Alphabet Inc-cl C(GOOG) | 2.4%Added | 2.1%Trimmed |
| Advanced Micro Devices Inc(AMD) | 5.3%Trimmed | 2.1%Added |
| Nvidia Corp(NVDA) | 1.8%Added | 7.4%Trimmed |
| Tesla MTRS Inc(TSLA) | 7.5%Trimmed | 1.1%Added |
| Broadcom Inc(AVGO) | 1.0%Trimmed | 3.1%Trimmed |
| Facebook Inc(META) | 0.9%Added | 1.7%Trimmed |
| Eli Lilly & Co(LLY) | 0.6%Added | 1.7%Trimmed |
| Taiwan Semiconductor-sp ADR(TSM) | 1.5%Trimmed | 0.5%Added |
| Deere & Co(DE) | 1.6%Trimmed | 0.5%Trimmed |
| Caterpillar Inc(CAT) | 0.4%Trimmed | 0.7%Added |
| Alphabet Inc(GOOGL) | 0.3%New | 3.6%Added |
| Square Inc(XYZ) | 1.5%Added | 0.3%Trimmed |
| Shopify Inc(SHOP) | 3.1%Trimmed | 0.3%Trimmed |
| Datadog Inc(DDOG) | 0.4%Trimmed | 0.3%Added |
| Doordash Inc(DASH) | 0.5%Added | 0.3%Added |
| Natera Inc(NTRA) | 1.2%Added | 0.2%Trimmed |
| Teledyne Technologies Inc(TDY) | 0.2%Added | 0.2%Trimmed |
| Mercadolibre Inc(MELI) | 0.2%Trimmed | 0.2%Trimmed |
| Space Exploration Technologies Corp(SPCX) | 5.0%New | 0.2%New |
and 35 smaller ones
Moved different ways in Q2 2026
Stocks one manager started or added to while the other trimmed or sold out, between the same two quarter ends. A 13F shows the quarter ends, never when in between anything was bought or sold, or why.
- Nvidia Corp(NVDA)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Amazon Com Inc(AMZN)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Alphabet Inc-cl C(GOOG)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Advanced Micro Devices Inc(AMD)ARK Investment Management LLC trimmed; T. Rowe Price Associates Inc added
- Facebook Inc(META)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Eli Lilly & Co(LLY)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Tesla MTRS Inc(TSLA)ARK Investment Management LLC trimmed; T. Rowe Price Associates Inc added
- Netflix Inc(NFLX)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Caterpillar Inc(CAT)ARK Investment Management LLC trimmed; T. Rowe Price Associates Inc added
- Taiwan Semiconductor-sp ADR(TSM)ARK Investment Management LLC trimmed; T. Rowe Price Associates Inc added
- Intuitive Surgical Inc(ISRG)ARK Investment Management LLC added; T. Rowe Price Associates Inc trimmed
- Sea Ltd(SE)ARK Investment Management LLC trimmed; T. Rowe Price Associates Inc added
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