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Livermore
Livermore
ZHEN

Proto Labs Inc

PRLB
Exchange
NYSE
Industry
Fabricated Structural Metal Products
SEC CIK
0001443669

In the last 90 days, Proto Labs Inc insiders filed 0 open-market purchases and 2 sales; 277 institutions reported holding it in 13F filings for Q2 2026, worth $1.83B in total; ARK Invest is the only superinvestor holding it.

Superinvestors holding PRLB, Q2 2026

1 superinvestor reports holding Proto Labs Inc on Form 13F, worth $2.89M in total. Weight is Proto Labs Inc's share of each 13F portfolio; actions compare shares with Q1 2026.

See all superinvestors
Superinvestors holding PRLB in Q2 2026
Superinvestor% of portfolioSharesValuevs. previous quarter
ARK InvestCathie Wood<0.1%35,418$2.89MReduced−22.5%

Moves by quarter

Superinvestors that opened, added to, trimmed or sold out of PRLB each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.

  1. Q2 2026

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−22.5%)

  2. Q1 2026

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−19.5%)

  3. Q4 2025

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−21.0%)

  4. Q3 2025

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−9.7%)

  5. Q2 2025

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−8.7%)

  6. Q1 2025

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−32.3%)

  7. Q4 2024

    1 superinvestor holding at quarter end

    Added
    ARK Invest (+3.8%)

  8. Q3 2024

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−6.9%)

  9. Q2 2024

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−2.6%)

  10. Q1 2024

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−23.5%)

  11. Q4 2023

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−0.6%)

  12. Q3 2023

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−20.3%)

  13. Q2 2023

    1 superinvestor holding at quarter end

    Added
    ARK Invest (+0.5%)

  14. Q1 2023

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−37.7%)

  15. Q4 2022

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−36.2%)

  16. Q3 2022

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−10.5%)

  17. Q2 2022

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−5.3%)

  18. Q1 2022

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−7.3%)

  19. Q4 2021

    1 superinvestor holding at quarter end

    Reduced
    ARK Invest (−72.6%)
    Sold out
    Maverick Capital

  20. Q3 2021

    2 superinvestors holding at quarter end

    Added
    Maverick Capital (+602.5%)
    Reduced
    ARK Invest (−13.6%)

  21. Q2 2021

    2 superinvestors holding at quarter end

    New
    Maverick Capital
    Reduced
    ARK Invest (−17.1%)