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Joel Greenblatt's Proto Labs, Inc. (PRLB) position

Yes: as of Q1 2026, Joel Greenblatt holds 11K shares of PRLB worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 1.8%. First disclosed Q2 2022.
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Current value
an amount we cannot price
Shares held
11K
% of portfolio
0.0%
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

PRLB price vs Greenblatt's position

Dates
$70$75$80$85← Earlier —9 purchases, 6 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −197 −1.8% 11K May 15, 2026
Q4 2025 Reduced −2K −16.3% 11K Feb 17, 2026
Q3 2025 Reduced −2K −14.1% 13K Nov 14, 2025
Q2 2025 Added +723 +4.9% 16K Aug 14, 2025
Q1 2025 Added +2K +14.4% 15K May 15, 2025
Q4 2024 Reduced −2K −13.6% 13K Feb 14, 2025
Q3 2024 Added +899 +6.4% 15K Nov 14, 2024
Q2 2024 Added +229 +1.7% 14K Aug 14, 2024
Q1 2024 Added +5K +60.3% 14K May 15, 2024
Q4 2023 Added +1K +13.3% 9K Feb 14, 2024
Q3 2023 Added +61 +0.8% 8K Nov 14, 2023
Q2 2023 Reduced −1K −16.0% 8K Aug 14, 2023
Q1 2023 Reduced −5K −35.8% 9K May 15, 2023
Q4 2022 New +14K 14K Feb 14, 2023
Q2 2022 New +8K 8K Aug 15, 2022
Data through Q1 2026 · filed May 15, 2026
15 grouped rows from 15 quarters

More Greenblatt positions

Common questions

Does Joel Greenblatt own PRLB?

Yes. As of Q1 2026, Joel Greenblatt disclosed 11K shares of PRLB, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy PRLB?

Joel Greenblatt first disclosed a PRLB position in Q2 2022; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Joel Greenblatt sell PRLB?

The quarter-by-quarter table above shows each sale and reduction Joel Greenblatt disclosed in PRLB. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of PRLB does Joel Greenblatt own?

Joel Greenblatt disclosed 11K shares of PRLB as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Joel Greenblatt pay for PRLB?

Joel Greenblatt began building the PRLB position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.