Renaissance Technologies (RenTech)'s PRLB Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 520,251 shares of Proto Labs, Inc. (PRLB) worth $29.66 M, representing 0.05% of the portfolio. First purchased in 2015-Q3, this long-term strategic position has been held for 31 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in PRLB, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2024, adding 121,028 shares. Largest reduction occurred in Q1 2022, reducing 198,400 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Proto Labs (PRLB) Holding Value Over Time
Track share changes against reported price movement
Quarterly Proto Labs (PRLB) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +26,700 | Add 5.41% | 520,251 | $57.02 |
| Q4 2025 | -50,100 | Reduce 9.22% | 493,551 | $50.59 |
| Q3 2025 | +1,600 | Add 0.30% | 543,651 | $50.03 |
| Q2 2025 | +10,400 | Add 1.96% | 542,051 | $40.04 |
| Q1 2025 | -40,200 | Reduce 7.03% | 531,651 | $35.04 |
| Q4 2024 | +15,000 | Add 2.69% | 571,851 | $39.09 |
| Q3 2024 | +121,028 | Add 27.77% | 556,851 | $29.37 |
| Q2 2024 | +106,423 | Add 32.31% | 435,823 | $30.89 |
| Q1 2024 | +39,800 | Add 13.74% | 329,400 | $35.75 |
| Q4 2023 | +13,500 | Add 4.89% | 289,600 | $38.96 |
| Q3 2023 | +74,184 | Add 36.74% | 276,100 | $26.40 |
| Q2 2023 | +51,416 | Add 34.16% | 201,916 | $0.03 |
| Q1 2023 | +25,800 | Add 20.69% | 150,500 | $0.03 |
| Q4 2022 | -13,700 | Reduce 9.90% | 124,700 | $0.03 |
| Q3 2022 | +91,200 | Add 193.22% | 138,400 | $36.43 |
| Q2 2022 | +43,300 | Add 1110.26% | 47,200 | $47.84 |
| Q1 2022 | -198,400 | Reduce 98.07% | 3,900 | $52.82 |
| Q4 2021 | +70,000 | Add 52.91% | 202,300 | $51.35 |
| Q3 2021 | -29,083 | Reduce 18.02% | 132,300 | $66.60 |
| Q2 2021 | +102,686 | Add 174.94% | 161,383 | $91.80 |
| Q1 2021 | +58,697 | New Buy | 58,697 | $121.74 |
| Q1 2020 | -9,300 | Sold Out | 0 | $0.00 |
| Q4 2019 | -6,400 | Reduce 40.76% | 9,300 | $101.51 |
| Q3 2019 | +15,700 | New Buy | 15,700 | $102.10 |
| Q2 2019 | -48,800 | Sold Out | 0 | $0.00 |
| Q1 2019 | -23,300 | Reduce 32.32% | 48,800 | $105.14 |
| Q4 2018 | +72,100 | New Buy | 72,100 | $112.79 |
| Q2 2016 | -3,300 | Sold Out | 0 | $0.00 |
| Q1 2016 | -2,600 | Reduce 44.07% | 3,300 | $76.97 |
| Q4 2015 | -71,600 | Reduce 92.39% | 5,900 | $63.73 |
| Q3 2015 | +77,500 | New Buy | 77,500 | $67.01 |
Renaissance Technologies (RenTech)'s Proto Labs Investment FAQs
Renaissance Technologies (RenTech) first purchased Proto Labs, Inc. (PRLB) in Q3 2015, acquiring 77,500 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Proto Labs, Inc. (PRLB) for 31 quarters since Q3 2015.
Renaissance Technologies (RenTech)'s largest addition to Proto Labs, Inc. (PRLB) was in Q3 2024, adding 556,851 shares worth $16.35 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 520,251 shares of Proto Labs, Inc. (PRLB), valued at approximately $29.66 M.
As of the Q1 2026 filing, Proto Labs, Inc. (PRLB) represents approximately 0.05% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Proto Labs, Inc. (PRLB) was 571,851 shares, as reported at the end of Q4 2024.